Kei Yamada

Summary

Affiliation: Kyoto Prefectural University of Medicine
Country: Japan

Publications

  1. ncbi request reprint MR tractography: a review of its clinical applications
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Magn Reson Med Sci 8:165-74. 2009
  2. doi request reprint Preferred involvement of the basal ganglia after lenticulostriate infarction as a possible indicator of different gray and white matter vulnerability
    Yoshinari Nagakane
    Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii cho, Kamigyo ku, Kyoto 602 8566, Japan
    Stroke 39:494-6. 2008
  3. doi request reprint Incidental acute infarcts identified on diffusion-weighted images: a university hospital-based study
    K Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    AJNR Am J Neuroradiol 29:937-40. 2008
  4. doi request reprint Cerebral white matter damage in frontotemporal dementia assessed by diffusion tensor tractography
    Koushun Matsuo
    Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Neuroradiology 50:605-11. 2008
  5. doi request reprint Effect of vascular stenosis on perfusion-weighted imaging; differences between calculation algorithms
    Shigenori Matsushima
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Magn Reson Imaging 27:1103-8. 2008
  6. doi request reprint Detection of early neuronal damage in CADASIL patients by q-space MR imaging
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cho, Kawaramachi Hirokoji Sagaru, Kamigyo ku, Kyoto City, Japan
    Neuroradiology 55:283-90. 2013
  7. ncbi request reprint Fiber-tracking method reveals sensorimotor pathway involvement in stroke patients
    Kei Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Stroke 34:E159-62. 2003
  8. ncbi request reprint Multitensor tractography enables better depiction of motor pathways: initial clinical experience using diffusion-weighted MR imaging with standard b-value
    K Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto City, Kyoto, Japan
    AJNR Am J Neuroradiol 28:1668-73. 2007
  9. ncbi request reprint The pyramidal tract has a predictable course through the centrum semiovale: a diffusion-tensor based tractography study
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Magn Reson Imaging 26:519-24. 2007
  10. ncbi request reprint MR tractography depicting damage to the arcuate fasciculus in a patient with conduction aphasia
    K Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kajii cyo, Kawaramachi Hirokoji Agaru, Kamigyo ku, Kyoto City, Kyoto 602 8566, Japan
    Neurology 68:789. 2007

Collaborators

Detail Information

Publications100

  1. ncbi request reprint MR tractography: a review of its clinical applications
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Magn Reson Med Sci 8:165-74. 2009
    ..We will review the past, present, and future of tractography, focusing primarily on its clinical applications...
  2. doi request reprint Preferred involvement of the basal ganglia after lenticulostriate infarction as a possible indicator of different gray and white matter vulnerability
    Yoshinari Nagakane
    Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii cho, Kamigyo ku, Kyoto 602 8566, Japan
    Stroke 39:494-6. 2008
    ..Symptomatic progression is frequently observed in lacunar infarcts. The exact mechanisms of this phenomenon have not yet been clarified...
  3. doi request reprint Incidental acute infarcts identified on diffusion-weighted images: a university hospital-based study
    K Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    AJNR Am J Neuroradiol 29:937-40. 2008
    ..Thus, the purpose of this study was to identify the rate of incident infarction as depicted on diffusion-weighted images (DWIs) obtained from a general patient population...
  4. doi request reprint Cerebral white matter damage in frontotemporal dementia assessed by diffusion tensor tractography
    Koushun Matsuo
    Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Neuroradiology 50:605-11. 2008
    ..We used diffusion tensor imaging (DTI) to study white matter integrity in patients with frontotemporal dementia (FTD)...
  5. doi request reprint Effect of vascular stenosis on perfusion-weighted imaging; differences between calculation algorithms
    Shigenori Matsushima
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Magn Reson Imaging 27:1103-8. 2008
    ....
  6. doi request reprint Detection of early neuronal damage in CADASIL patients by q-space MR imaging
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cho, Kawaramachi Hirokoji Sagaru, Kamigyo ku, Kyoto City, Japan
    Neuroradiology 55:283-90. 2013
    ..We hypothesized that this technique would facilitate the assessment of the progressive nature of neuronal damage seen in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL)...
  7. ncbi request reprint Fiber-tracking method reveals sensorimotor pathway involvement in stroke patients
    Kei Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Stroke 34:E159-62. 2003
    ..We tested the feasibility of a new MRI technique that provides visualization of the sensorimotor tracts in vivo in a group of stroke victims...
  8. ncbi request reprint Multitensor tractography enables better depiction of motor pathways: initial clinical experience using diffusion-weighted MR imaging with standard b-value
    K Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto City, Kyoto, Japan
    AJNR Am J Neuroradiol 28:1668-73. 2007
    ..The purpose of this work was to test the feasibility of using high angular resolution diffusion imaging (HARDI)-based multitensor tractography to depict motor pathways in patients with brain tumors...
  9. ncbi request reprint The pyramidal tract has a predictable course through the centrum semiovale: a diffusion-tensor based tractography study
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Magn Reson Imaging 26:519-24. 2007
    ..To identify reproducible anatomical landmarks that would allow predicting the course of the pyramidal tract (PT) through centrum semiovale...
  10. ncbi request reprint MR tractography depicting damage to the arcuate fasciculus in a patient with conduction aphasia
    K Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kajii cyo, Kawaramachi Hirokoji Agaru, Kamigyo ku, Kyoto City, Kyoto 602 8566, Japan
    Neurology 68:789. 2007
  11. ncbi request reprint Brain fiber tracking with clinically feasible diffusion-tensor MR imaging: initial experience
    Kei Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kajii cyo, Kawaramachi Hirokoji Sagaru, Kamigyo ku, Kyoto City, Kyoto 602 8566, Japan
    Radiology 227:295-301. 2003
    ..This diffusion-tensor MR imaging method with the parallel imaging technique allows clinically feasible brain fiber tracking...
  12. ncbi request reprint Somatotopic organization of thalamocortical projection fibers as assessed with MR tractography
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cyo, Kawaramachi Hirokoji Sagaru, Kamigyo ku, Kyoto City, Kyoto 602 8566, Japan
    Radiology 242:840-5. 2007
    ..To prospectively evaluate the course of sensory fibers through the supratentorial brain with diffusion-tensor-based tractography...
  13. pmc Wallerian degeneration of the inferior cerebellar peduncle depicted by diffusion weighted imaging
    K Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto City, Kyoto, Japan
    J Neurol Neurosurg Psychiatry 74:977-8. 2003
    ..We describe a case in which it was depicted by thin slice diffusion weighted imaging. Location to the inferior cerebellar peduncle was confirmed by a fibre tracking method...
  14. ncbi request reprint Oculomotor nerve palsy evaluated by diffusion-tensor tractography
    Kei Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kajii cyo, Kawaramachi Hirokoji Agaru, Kamigyo ku, Kyoto, 602 8566, Japan
    Neuroradiology 48:434-7. 2006
    ..The aim of the study was to test the feasibility of the tractography technique based on diffusion-tensor imaging (DTI) for the assessment of small infarcts involving the brainstem...
  15. ncbi request reprint Tractography for an arteriovenous malformation
    Kei Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto City, Kyoto, Japan
    Neurology 62:669. 2004
  16. ncbi request reprint Stroke patients' evolving symptoms assessed by tractography
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto City, Kyoto, Japan
    J Magn Reson Imaging 20:923-9. 2004
    ..To test the hypothesis that an interval evolution in the location of the depicted sensorimotor tract relative to the infarct (the "tract-infarct relationship") may be related to stroke victims' symptom progression...
  17. ncbi request reprint Effect of intravenous gadolinium-DTPA on diffusion-weighted images: evaluation of normal brain and infarcts
    Kei Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto City, Japan
    Stroke 33:1799-802. 2002
    ..The present study assesses whether administration of gadolinium-based contrast material significantly affects DWI and ADC values...
  18. doi request reprint Moyamoya patients exhibit higher brain temperatures than normal controls
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cho, Kawaramachi Hirokoji Sagaru, Kamigyo ku, Kyoto City, Kyoto, Japan
    Neuroreport 21:851-5. 2010
    ..1 degrees C between the two groups was significant. Patients with moyamoya disease tend to have elevated ventricular temperatures, which may represent a mismatch between cerebral metabolism and perfusion...
  19. ncbi request reprint Magnetic resonance perfusion-weighted imaging of acute cerebral infarction: effect of the calculation methods and underlying vasculopathy
    Kei Yamada
    Massachusetts General Hospital NMR Center, Harvard Medical School, Boston, USA
    Stroke 33:87-94. 2002
    ..Steno-occlusive disease in the parent vessels is another factor that may affect the results of the PWI. The purpose of this study was to elucidate the effect of the calculation methods and underlying vasculopathy on PWI...
  20. doi request reprint MR imaging of ventral thalamic nuclei
    K Yamada
    Departments of Radiology, Kyoto Prefectural University of Medicine, Japan
    AJNR Am J Neuroradiol 31:732-5. 2010
    ..The Vim and VPL are important target regions of the thalamus for DBS. Our aim was to clarify the anatomic locations of the ventral thalamic nuclei, including the Vim and VPL, on MR imaging...
  21. ncbi request reprint An intracranial aspergilloma with low signal on T2-weighted images corresponding to iron accumulation
    K Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Japan
    Neuroradiology 43:559-61. 2001
    ..The low-signal zones may represent the areas where there was active proliferation of aspergillus, and the unique location of the low signal may be a helpful imaging characteristic for the diagnosis of an aspergillus abscess...
  22. doi request reprint Cerebral white matter lesions may be partially reversible in patients with carotid artery stenosis
    Kei Yamada
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cho, Kawaramachi Hirokoji Agaru, Kamigyo ku, Kyoto City, Kyoto, Japan
    AJNR Am J Neuroradiol 31:1350-2. 2010
    ..Pixel-by-pixel image analysis showed that the reversed WMLs tended to have higher lambda1 and lower signal intensity on b = 0 images compared with nonreversed lesions, but by only approximately 10%...
  23. ncbi request reprint Tractography for arteriovenous malformations near the sensorimotor cortices
    Kei Yamada
    Department of Radiology Kyoto Prefectural University of Medicine, Kyoto, Japan
    AJNR Am J Neuroradiol 26:598-602. 2005
    ..The relationship between the sensorimotor tracts and the AVM was well demonstrated in all patients. Tractography was also helpful in identifying the location of the motor cortex in some of the cases...
  24. ncbi request reprint Diagnosis of breast tumors by contrast-enhanced MR imaging: comparison between the diagnostic performance of dynamic enhancement patterns and morphologic features
    Mariko Goto
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajiicho, Kyoto, Japan
    J Magn Reson Imaging 25:104-12. 2007
    ..To compare the diagnostic performance of breast lesions by the enhancement patterns and morphologic criteria on magnetic resonance imaging (MRI)...
  25. pmc Optimum b value for resolving crossing fibers: a study with standard clinical b value using 1.5-T MR
    Kentaro Akazawa
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cho, Kawaramachi Hirokoji Agaru, Kamigyo ku, Kyoto City, Kyoto, 602 8566, Japan
    Neuroradiology 52:723-8. 2010
    ..The study tested the standard b values that are commonly used in the routine clinical setting...
  26. doi request reprint Predictive markers of blood cytokine and chemokine in recurrent brain infarction
    Nagato Kuriyama
    Department of Neurology, Kyoto Prefectural University of Medicine, 465 Kawaramachi Hirokoji, Kamigyo ku, Kyoto, Japan
    J Interferon Cytokine Res 29:729-34. 2009
    ..05). In conclusion, the MCP-1 level as well as hsCRP in the blood can be a potential predictive marker of recurrent thrombotic brain infarction, and may reflect inflammation that promotes intracranial large-artery atherosclerosis...
  27. doi request reprint Is it possible to define salvageable ischemic penumbra using semiquantitative rCBF levels derived from MR perfusion-weighted imaging?
    Kentaro Akazawa
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto City, Kyoto, Japan
    Neuroradiology 50:939-45. 2008
    ..The purpose of this study was to test if magnetic resonance (MR) perfusion-weighted imaging (PWI) can reliably characterize the ischemic penumbra...
  28. doi request reprint Evaluation of factors associated with elevated levels of platelet-derived microparticles in the acute phase of cerebral infarction
    Nagato Kuriyama
    Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Clin Appl Thromb Hemost 16:26-32. 2010
    ..The objective of this study was to determine the parameters associated with elevated PDMP levels and examine their relationship with atherosclerotic lesions of main intracranial and extracranial arteries...
  29. doi request reprint Neural correlates of the components of the clock drawing test
    Teruyuki Matsuoka
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii cho, Kawaramachi Hirokoji, Kamigyo ku, Kyoto 602 8566, Japan
    Int Psychogeriatr 25:1317-23. 2013
    ..The aim of this study was to identify the neural correlates of each component of the clock drawing test (CDT) in drug-naïve patients with Alzheimer's disease (AD) using single photon emission computed tomography...
  30. ncbi request reprint Effect of thin-section diffusion-weighted MR imaging on stroke diagnosis
    Hisao Nakamura
    Department of Radiology, Kyoto Prefectural University of Medicine, Kajii cyo, Kawaramachi Hirokoji Noboru, Kamigyo ku, Kyoto City, Japan
    AJNR Am J Neuroradiol 26:560-5. 2005
    ..We decreased the section thickness of DW imaging to 3 mm to determine if this change improves the depiction of small infarcts and if it affects stroke diagnosis...
  31. doi request reprint Microperfusion-induced elevation of ADC is suppressed after contrast in breast carcinoma
    Sachiko Yuen
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Magn Reson Imaging 29:1080-4. 2009
    ..To investigate the effect of gadolinium (Gd)-DTPA on the apparent diffusion coefficient (ADC) of breast carcinoma and to analyze the relationship between pre/postcontrast ADC and the degree of contrast enhancement...
  32. doi request reprint Age-dependent brain temperature decline assessed by diffusion-weighted imaging thermometry
    Koji Sakai
    Department of Human Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan
    NMR Biomed 24:1063-7. 2011
    ..DWI-based thermometry demonstrates that ventricular temperature declines with the normal aging process. Further study is warranted to define the relationships between temperature, metabolism and circulation...
  33. ncbi request reprint Higher lesion conspicuity for SENSE dynamic MRI in detecting hypervascular hepatocellular carcinoma: analysis through the measurements of liver SNR and lesion-liver CNR comparison with conventional dynamic MRI
    Osamu Tanaka
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii cho, Kawaramachi Hirokoji, Kamigyo ku, Kyoto, 602 8566, Japan
    Eur Radiol 15:2427-34. 2005
    ..01). The SNR in SENSE MRI is significantly lower than in conventional MRI, although the lesion CNR is significantly higher than in conventional MRI...
  34. doi request reprint Incremental value of T2-weighted and diffusion-weighted MRI for prediction of biochemical recurrence after radical prostatectomy in clinically localized prostate cancer
    Kaori Nishida
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Acta Radiol 52:120-6. 2011
    ..Although previous studies have demonstrated the diagnostic utility of diffusion-weighted imaging (DWI) for prostate cancer, the prognostic value of pretreatment DWI has not been investigated yet...
  35. doi request reprint Anterior insular volume is larger in patients with obsessive-compulsive disorder
    Seiji Nishida
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602 8566, Japan
    Prog Neuropsychopharmacol Biol Psychiatry 35:997-1001. 2011
    ..The results suggest that the anterior insular cortex may be related to the pathophysiology of OCD...
  36. doi request reprint Fiber-tracking techniques can predict the degree of neurologic impairment for periventricular leukomalacia
    Aki Murakami
    Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo, Kyoto 602 8566, Japan
    Pediatrics 122:500-6. 2008
    ..Such episodes can result in periventricular leukomalacia, which may substantially influence later brain development. Noninvasive methods of assessing the severity of injury at the earliest stage of life have not yet been established...
  37. ncbi request reprint Microbleeds in Alzheimer disease are more related to cerebral amyloid angiopathy than cerebrovascular disease
    Yuriko Nakata-Kudo
    Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Dement Geriatr Cogn Disord 22:8-14. 2006
    ..Microbleeds not being related to common hemorrhagic risk factors, but being significantly related to white matter pathologies suggested that microbleeds in AD may be associated with CAA, but not with hypertension or CVD...
  38. doi request reprint Diffusion tensor imaging and tract-based spatial statistics in obsessive-compulsive disorder
    Takashi Nakamae
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cho 465, Kawaramachi Hirokoji, Kamigyo ku, Kyoto, 602 8566, Japan
    J Psychiatr Res 45:687-90. 2011
    ..Microstructural white matter abnormalities in the CC, the cingulum, and the ALIC might be involved in the pathophysiology of OCD...
  39. doi request reprint Assessment of arcuate fasciculus with diffusion-tensor tractography may predict the prognosis of aphasia in patients with left middle cerebral artery infarcts
    Akiko Hosomi
    Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii cho, Kamigyo ku, Kyoto, 602 8566, Japan
    Neuroradiology 51:549-55. 2009
    ..A method enabling objective assessment of verbal function is needed for this purpose. We examined whether diffusion tensor (DT) tractography is of clinical value in assessing aphasia...
  40. doi request reprint Neural correlates of performance on the different scoring systems of the clock drawing test
    Teruyuki Matsuoka
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii cho, Kawaramachi Hirokoji, Kamigyo ku, Kyoto, 602 8566, Japan
    Neurosci Lett 487:421-5. 2011
    ..Although the scoring systems share commonalities, each CDT scoring system may reflect different areas of brain damage...
  41. ncbi request reprint Relationship between contrast enhancement on fluid-attenuated inversion recovery MR sequences and signal intensity on T2-weighted MR images: visual evaluation of brain tumors
    Takao Kubota
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Magn Reson Imaging 21:694-700. 2005
    ..To investigate the relationship between the degree of contrast enhancement in fluid-attenuated inversion recovery (FLAIR) sequences and tumor signal intensity on T2-weighted images...
  42. ncbi request reprint Local tissue anisotropy decreases in cerebellopetal fibers and pyramidal tract in multiple system atrophy
    Kensuke Shiga
    Department of Neurology and Geriatrics, Department of Radiology, Kyoto Prefectural University of Medicine, Kaijicho 465 Kamigyo ku, Kyoto, 601 0841, Japan
    J Neurol 252:589-96. 2005
    ..The pathological changes of tissue microstructure can modify the diffusion behavior of water molecules, which can be assessed by diffusion tensor imaging (DTI)...
  43. ncbi request reprint Iron-induced susceptibility effect at the globus pallidus causes underestimation of flow and volume on dynamic susceptibility contrast-enhanced MR perfusion images
    Kei Yamada
    Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto City, Japan
    AJNR Am J Neuroradiol 23:1022-9. 2002
    ..The purpose of this study was to assess the effect of iron-induced susceptibility on the calculated perfusion parameters. The difference of this effect between gradient-echo and spin-echo sequences was also assessed...
  44. doi request reprint Alteration of fractional anisotropy and apparent diffusion coefficient in obsessive-compulsive disorder: a diffusion tensor imaging study
    Takashi Nakamae
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602 8566, Japan
    Prog Neuropsychopharmacol Biol Psychiatry 32:1221-6. 2008
    ..The goal of this study was to investigate white matter abnormalities and water diffusivity, as reflected by FA and ADC, using DTI in patients with OCD...
  45. doi request reprint Evaluation of autonomic malfunction in HTLV-1 associated myelopathy (HAM)
    Nagato Kuriyama
    Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kawaramachi Hirokoji, Kamigyo ku, Kyoto, Japan
    Auton Neurosci 150:131-5. 2009
    ..In conclusion, cardiovascular autonomic dysfunction in HAM patients is mainly associated with cardiac sympathetic efferent abnormalities in the upper thoracic segments...
  46. ncbi request reprint Diagnosis of Alzheimer's disease using brain perfusion SPECT and MR imaging: which modality achieves better diagnostic accuracy?
    Takao Kubota
    Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Radiology, Kyoto, Japan
    Eur J Nucl Med Mol Imaging 32:414-21. 2005
    ..The purpose of this study was to compare the accuracy of MR imaging and brain perfusion single-photon emission tomography (SPECT) in diagnosing Alzheimer's disease (AD)...
  47. ncbi request reprint Do white matter changes have clinical significance in Alzheimer's disease?
    Ichiyo Kono
    Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Gerontology 50:242-6. 2004
    ..Although white matter changes visible with MRI are generally considered to result from ischemia, it has become clear that these changes also appear in patients with Alzheimer's disease (AD). However, their significance in AD is unknown...
  48. ncbi request reprint White matter loss in the splenium of the corpus callosum in a case of posterior cortical atrophy: a diffusion tensor imaging study
    Tomokatsu Yoshida
    Research Institute for Neurological Diseases and Geriatrics, Department of Neurology and Gerontology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Eur Neurol 52:77-81. 2004
    ....
  49. doi request reprint Effects of chemotherapy on the brain in childhood: diffusion tensor imaging of subtle white matter damage
    Shigemi Morioka
    Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii cho, Kawaramachi Hirokoji, Kamigyo ku, Kyoto, 602 8566, Japan
    Neuroradiology 55:1251-7. 2013
    ..We aimed to determine whether chemotherapy affects white matter (WM)...
  50. doi request reprint Reduced cortical thickness in non-medicated patients with obsessive-compulsive disorder
    Takashi Nakamae
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kamigyo ku, Kyoto 602 8566, Japan
    Prog Neuropsychopharmacol Biol Psychiatry 37:90-5. 2012
    ....
  51. doi request reprint The neural basis of dysfunctional beliefs in non-medicated patients with obsessive-compulsive disorder
    Takashi Nakamae
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602 8566, Japan
    Prog Neuropsychopharmacol Biol Psychiatry 37:22-5. 2012
    ..Taken together, the left amygdala volume may play a role in the presence of certain dysfunctional beliefs in OCD patients...
  52. doi request reprint The role of breast MR imaging in pre-operative determination of invasive disease for ductal carcinoma in situ diagnosed by needle biopsy
    Mariko Goto
    Departments of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi Hirokoji, Kamigyoku, 602 8566 Kyoto, Japan
    Eur Radiol 22:1255-64. 2012
    ..To evaluate whether magnetic resonance (MR) imaging features can predict the presence of occult invasion in cases of biopsy-proven pure ductal carcinoma in situ (DCIS)...
  53. ncbi request reprint Pitfalls of FDG-PET for the diagnosis of osteoblastic bone metastases in patients with breast cancer
    Takako Nakai
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Eur J Nucl Med Mol Imaging 32:1253-8. 2005
    ....
  54. ncbi request reprint High-resolution imaging of the spine using multidetector-row computed tomography: differentiation between benign and malignant vertebral compression fractures
    Takao Kubota
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo ku, Kyoto, Japan
    J Comput Assist Tomogr 29:712-9. 2005
    ..The purpose of this study was to investigate the ability of high-resolution computed tomography (CT) images to distinguish between benign and malignant vertebral compression fractures...
  55. doi request reprint Flow velocity of the superior sagittal sinus is reduced in patients with idiopathic normal pressure hydrocephalus
    Nagato Kuriyama
    Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Neuroimaging 21:365-9. 2011
    ..This study was performed to determine whether there is a venous return abnormality in the intracranial circulation of patients with iNPH...
  56. doi request reprint White-matter hyperintensities predict delirium after cardiac surgery
    Yutaka Hatano
    Department of Psychiatry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan Electronic address
    Am J Geriatr Psychiatry 21:938-45. 2013
    ..The aim of this study was to identify general risk factors for delirium, as well as to examine the specific relationship between WMH and delirium...
  57. doi request reprint Calculation methods for ventricular diffusion-weighted imaging thermometry: phantom and volunteer studies
    Koji Sakai
    Department of Human Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan
    NMR Biomed 25:340-6. 2012
    ..The histogram curve-fitting methods were more objective and better matched the estimated brain temperature than did classical predetermined thresholding methods, although the standard deviation was wider in the former methods...
  58. ncbi request reprint Optimization of TI values in inversion-recovery MR sequences for the depiction of fine structures within gray and white matter: separation of globus pallidus interna and externa
    Hisao Nakamura
    Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi Hirokoji, Kamigyoku, Kyoto 602 8566, Japan
    Acad Radiol 10:58-63. 2003
    ..The authors' purpose was to search the inversion time (TI) values that enable the best differentiation of fine structures in gray matter (gray-gray differentiation)...
  59. doi request reprint Development of corpus callosum in preterm infants is affected by the prematurity: in vivo assessment of diffusion tensor imaging at term-equivalent age
    Tatsuji Hasegawa
    Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602 8566, Japan
    Pediatr Res 69:249-54. 2011
    ..We demonstrated that preterm infants without apparent white matter lesions affect development of the posterior CC depending on the degree of prematurity...
  60. ncbi request reprint Numerical simulation model of hyperacute/acute stage white matter infarction
    Koji Sakai
    Center for Promotion of Excellence in Higher Education, Kyoto University, Kyoto, Japan
    Magn Reson Med Sci 7:187-94. 2008
    ..We hypothesized that membrane permeability as well as axonal swelling play important roles, and we therefore constructed a simulation model using random walk simulation to replicate the diffusion of water molecules...
  61. ncbi request reprint Standardizing display conditions of diffusion-weighted images using concurrent b0 images: a multi-vendor multi-institutional study
    Makoto Sasaki
    Department of Radiology, Iwate Medical University School of Medicine, Morioka, Japan
    Magn Reson Med Sci 6:133-7. 2007
    ..To establish a practical method that uses concurrent b0 images to standardize the display conditions for diffusion-weighted images (DWI) that vary among institutions and interpreters...
  62. ncbi request reprint Clinical significance of white matter changes in senile dementia of the Alzheimer type
    Ichiyo Kono
    Department of Neurology, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo ku, Kyoto 602 8566, Japan
    Ann N Y Acad Sci 977:430-5. 2002
  63. ncbi request reprint Equivalent cross-relaxation rate imaging of breast cancer
    Sachiko Yuen
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Magn Reson Imaging 20:56-65. 2004
    ..To determine whether equivalent cross-relaxation rate (ECR) imaging is a feasible method for demonstrating breast cancer...
  64. doi request reprint Evaluation of autonomic malfunction in idiopathic normal pressure hydrocephalus
    Nagato Kuriyama
    Dept of Neurology and Gerontology, Kyoto Prefectural University of Medicine, 465 Kawaramachi Hirokoji, Kamigyo ku, Kyoto, 602 8566, Japan
    Clin Auton Res 18:213-20. 2008
    ....
  65. pmc Early pathological changes in the parkinsonian brain demonstrated by diffusion tensor MRI
    K Yoshikawa
    Department of Neurology, Research Institute for Neurological Diseases and Geriatrics, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Neurol Neurosurg Psychiatry 75:481-4. 2004
    ..To determine whether the fractional anisotropy (FA) of magnetic resonance diffusion tensor imaging is decreased in the nigrostriatal projection in parkinsonian patients...
  66. pmc Epithelial hyperproliferation and transglutaminase 1 gene expression in Stevens-Johnson syndrome conjunctiva
    K Nishida
    Department of Ophthalmology, Kyoto Prefectural University of Medicine, Japan
    Am J Pathol 154:331-6. 1999
    ..We speculate that in Stevens-Johnson syndrome, epithelial hyperproliferation, and transglutaminase 1 gene expression lead to the pathological keratinization of ocular surface mucosal epithelia...
  67. doi request reprint A case of cerebral aquaporinopathy
    A Tanaka
    Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Mult Scler 16:1252-4. 2010
    ..Serum aquaporin-4 antibody levels were positive, but there were no visual manifestations or myelitis. Spinal MRI was negative for longitudinally extended transverse myelitis throughout the clinical course...
  68. ncbi request reprint Posterior cingulate metabolic changes in frontotemporal lobar degeneration detected by magnetic resonance spectroscopy
    O Kizu
    Department of Radiology, Kyoto Prefectural University of Medicine, 456 Kajiicho, Kamigyoku, 602 8566 Kyoto, Japan
    Neuroradiology 46:277-81. 2004
    ..Decreased NAA may reflect neuronal activity in the posterior cingulate gyrus, and this study may contribute to insights into the pathophysiology of FTLD...
  69. ncbi request reprint Atrial natriuretic peptide inhibits the expression of tissue factor and plasminogen activator inhibitor 1 induced by angiotensin II in cultured rat aortic endothelial cells
    M Yoshizumi
    Second Department of Medicine, Kyoto Prefectural University of Medicine, Japan
    Thromb Haemost 79:631-4. 1998
    ..ANP suppressed mRNA expressions of TF and PAI-1 induced by Ang II in a concentration-dependent manner. This suppression was accompanied by the decreased activities of TF and PAI-1...
  70. ncbi request reprint Diffusion anisotropy measurement of brain white matter is affected by voxel size: underestimation occurs in areas with crossing fibers
    H Oouchi
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto City, Kyoto, Japan
    AJNR Am J Neuroradiol 28:1102-6. 2007
    ..The purpose of this article was to investigate the effect of voxel size/shape on measured FA by using isotropic and nonisotropic voxels...
  71. ncbi request reprint Secondary aneurysmal bone cyst derived from a giant-cell tumour of the skull base
    H Ito
    Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajii cho, Kawaramachi Hirokoji, Kamigyo ku, 602 8566 Kyoto, Japan
    Neuroradiology 45:616-7. 2003
    ..We report a 20-year-old man with a giant-cell tumour of the skull base which showed multiple fluid levels on MRI...
  72. ncbi request reprint Subclinical brain hemorrhages in Alzheimer's disease: evaluation by magnetic resonance T2*-weighted images
    Yuriko Nakata
    Department of Neurology and Radiology, Kyoto Prefectural University of Medicine, Kajiicho 465, Kamigyo ku, Kyoto 602 8566, Japan
    Ann N Y Acad Sci 977:169-72. 2002
  73. ncbi request reprint Tractography to depict three layers of visual field trajectories to the calcarine gyri
    Takami Yamamoto
    Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Am J Ophthalmol 140:781-785. 2005
    ..We used this method in attempts to visualize the optic radiation and to examine the clinical applicability of this technique...
  74. doi request reprint In vivo assessment of peripheral nerve regeneration by diffusion tensor imaging
    Shinsuke Morisaki
    Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan
    J Magn Reson Imaging 33:535-42. 2011
    ..We assessed the changes in the DTI parameters and histological analyses after nerve injury to examine degeneration and regeneration in the rat sciatic nerves...
  75. doi request reprint Radiologist supply and workload: international comparison--Working Group of Japanese College of Radiology
    Yasuo Nakajima
    Department of Radiology, St Marianna University School of Medicine, 2 16 1 Sugao, Miyamae ku, Kawasaki, 216 8511, Japan
    Radiat Med 26:455-65. 2008
    ..The aim of this study was to compare radiology statistics and procedures across the world with an eye to lightening the workload of radiologists in Japan...
  76. ncbi request reprint Proton chemical shift imaging in pick complex
    Osamu Kizu
    Department of Radiology, Kyoto Prefectural University of Medicine, Japan
    AJNR Am J Neuroradiol 23:1387-92. 2002
    ..The purpose of this study was to evaluate changes in brain metabolism in PC with proton chemical shift imaging ((1)H-CSI)...
  77. ncbi request reprint MR tractography for the evaluation of functional recovery from lenticulostriate infarcts
    J Konishi
    Department of Radiology, Kobe University Graduate School of Medicine, Japan
    Neurology 64:108-13. 2005
    ..To evaluate the anatomic and clinical relationship between the lenticulostriate artery (LSA) territory and the corticospinal tract (CST) in patients with acute infarcts in this territory using MR tractography...
  78. ncbi request reprint Plasminogen activator inhibitor-1 promoter 4G/5G genotype is not a risk factor for myocardial infarction in a Japanese population
    T Sugano
    The Second Department of Medicine, Kyoto Prefectural University of Medicine, Japan
    Blood Coagul Fibrinolysis 9:201-4. 1998
    ..This is in contrast to the first report in Caucasians, suggesting an interaction with other genetic or environmental factors which influences the risk of myocardial infarction...
  79. doi request reprint Diffusion tensor imaging may help the determination of time at onset in cerebral ischaemia
    K Sakai
    Center for Promotion of Excellence in Higher Education, Kyoto University, Yoshidanihonmatsu cho, Sakyo ku, Kyoto City, Kyoto 606 8501, Japan
    J Neurol Neurosurg Psychiatry 80:986-90. 2009
    ..The study examines whether transverse diffusivity could be useful in assessing white matter infarcts of various ages...
  80. pmc Defective stratum corneum and early neonatal death in mice lacking the gene for transglutaminase 1 (keratinocyte transglutaminase)
    M Matsuki
    Department of Dermatology, Research Institute for Neurological Diseases and Geriatrics, Kyoto Prefectural University of Medicine, Kyoto 602, Japan
    Proc Natl Acad Sci U S A 95:1044-9. 1998
    ..Thus, these TGase 1 knockout mice may be a useful model for severe cases of LI...
  81. ncbi request reprint Use of the prone oblique position in surgery for posterior fossa lesions
    K I Kikuta
    Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
    Acta Neurochir (Wien) 146:1119-24; discussion 1124. 2004
    ..We attempt to show the advantages of the prone oblique position in the surgery for posterior fossa lesions...
  82. doi request reprint Fluid-fluid level formation: a rare finding of extracranial head and neck schwannomas
    H Kato
    Department of Radiology, Gifu University School of Medicine, Gifu, Japan
    AJNR Am J Neuroradiol 30:1451-3. 2009
    ..Although fluid-fluid levels are nonspecific findings, schwannoma should be considered when radiologic images demonstrate marked cystic formation with fluid-fluid levels in extracranial head and neck tumors...
  83. ncbi request reprint The eta isoform of protein kinase C mediates transcriptional activation of the human transglutaminase 1 gene
    E Ueda
    Department of Dermatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
    J Biol Chem 271:9790-4. 1996
    ..In comparison with other PKC isoforms, nPKCeta most effectively induced the luciferase activity. We suggest that nPKCeta, an epithelium-specific isoform of PKC, mediates the activation of the TGase 1 transcription...
  84. ncbi request reprint Case of radiation-induced esophageal ulcer worsened after endoscopic biopsy
    T Soejima
    Department of Radiology, Kobe Graduate University School of Medicine, Kobe, Japan
    Dis Esophagus 15:266-8. 2002
    ..A possibility that the biopsy contributed to worsening the ulcer can be considered. Except for cases where relapse is apparent, endoscopic biopsy is considered to be avoided...
  85. ncbi request reprint Proton chemical shift imaging in normal pressure hydrocephalus
    O Kizu
    Department of Radiology, Kyoto, Japan
    AJNR Am J Neuroradiol 22:1659-64. 2001
    ..In one patient with NPH, intraventricular lactate disappeared and regional CBF recovered after drainage. CONCLUSION: The intraventricular lactate level may be useful in differentiating NPH from other types of dementia...
  86. ncbi request reprint Comparison of diameter and perimeter methods for tumor volume calculation
    A G Sorensen
    MGH NMR Center and Neuroradiology Division, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
    J Clin Oncol 19:551-7. 2001
    ..We sought to compare the common method of using orthogonal diameters to estimate lesion volume (the diameter method) with a computer-assisted planimetric technique (the perimeter method)...
  87. doi request reprint A single institutional non-randomized retrospective comparison between definitive chemoradiotherapy and radical surgery in 82 Japanese patients with resectable esophageal squamous cell carcinoma
    H Yamashita
    Department of Radiology, University of Tokyo Hospital, Bunkyo ku, Tokyo, Japan
    Dis Esophagus 21:430-6. 2008
    ..There is a trend toward improved survival with surgery versus definitive CRT...
  88. ncbi request reprint Pilot study of local radiotherapy for portal vein tumor thrombus in patients with unresectable hepatocellular carcinoma
    K Yamada
    Department of Radiology, Kobe University School of Medicine, Kobe, Japan
    Jpn J Clin Oncol 31:147-52. 2001
    ..The aim of the study was to investigate the efficacy and toxicity of this preliminary trial regime and to explore RT guidelines for cirrhosis...
  89. ncbi request reprint CT-based evaluation of axillary sentinel lymph node status in breast cancer: value of added contrast-enhanced study
    S Yuen
    Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
    Acta Radiol 45:730-7. 2004
    ..To evaluate the diagnostic reliability of CT-based sentinel lymph node (SLN) size criteria for selecting the candidates for direct axillary dissection without SLN biopsy and to determine the value of added contrast-enhanced study...
  90. ncbi request reprint Evaluation of axillary status in breast cancer. CT-based determination of sentinel lymph node size
    S Yuen
    Department of Radiology, Kyoto Prefectural University of Medicine, Kamigyou, Kyoto, Japan
    Acta Radiol 43:579-86. 2002
    ..To determine whether the location and size of sentinel lymph nodes (SLN) on CT are predictive of the axillary lymph node status in patients with breast cancer...
  91. ncbi request reprint Angiotensinogen gene polymorphism as a risk factor for ischemic stroke
    Taizen Nakase
    Department of Neurology, Research Institute for Brain and Blood Vessels, 6 10 Senshu Kubota machi, Akita, Japan 010 0874
    J Clin Neurosci 14:943-7. 2007
    ..031 and 0.026, respectively). Synergistic effects of the AGT gene polymorphism and clinical risks were not observed. In conclusion, AGT M allele may present a risk of lacunar infarctions in Japanese men, independent of hypertension...
  92. ncbi request reprint [Fiber tractography in eloquent surgery for brain tumors]
    Naoya Hashimoto
    Department of Neurosurgery, Osaka University Graduate School of Medicine
    Nihon Rinsho 63:353-7. 2005
  93. ncbi request reprint Implications of SENSE MR in routine clinical practice
    Johan S van den Brink
    Philips Medical Systems, PO Box 10000, 5680 DA Best, The Netherlands
    Eur J Radiol 46:3-27. 2003
    ..It is shown that SENSE has opened new horizons in both routine and advanced MR imaging...
  94. ncbi request reprint Fiber-tracking does not accurately estimate size of fiber bundle in pathological condition: initial neurosurgical experience using neuronavigation and subcortical white matter stimulation
    Manabu Kinoshita
    Department of Neurosurgery, Osaka University Medical School, Yamadaoka, 2 2, Suita, Osaka 565 0871, Japan
    Neuroimage 25:424-9. 2005
    ..Here we discuss the advantages and limitations of fiber-tracking in the field of neurosurgery...
  95. ncbi request reprint Pontine pseudoathetosis: lemniscal involvement visualized by by axonal tracking method with diffusion tensor imaging
    Kensuke Shiga
    J Neurol 250:511-2. 2003
  96. ncbi request reprint Neuro-Behçet disease mimicking brain tumor
    Koushun Matsuo
    Department of Neurology, Saiseikai Shiga Hospital, Ritto, Shiga, Japan
    AJNR Am J Neuroradiol 26:650-3. 2005
    ..The lesion, however, was not neoplasia by pathologic diagnosis. By using steroid therapy, the size had been markedly shrunken on the follow-up images. The clinical symptoms were also improved...
  97. ncbi request reprint Schizophrenia-like psychosis following right putaminal infarction
    Yurinosuke Kitabayashi
    J Neuropsychiatry Clin Neurosci 18:561-2. 2006
  98. ncbi request reprint Imaging findings in intracranial aspergillosis
    Kei Yamada
    Department of Diagnostic Radiology, University of Rochester Medical Center, NY, USA
    Acad Radiol 9:163-71. 2002
    ..The authors' purpose was to elucidate the various computed tomographic (CT) and magnetic resonance (MR) imaging findings in intracranial aspergillosis...
  99. ncbi request reprint [A case of motor disturbance in upper limb by parietal lesion; limb kinetic apraxia without visual compensation?]
    Akiko Hosomi
    Department of Neurology, Kyoto Prefectural University of Medicine
    Rinsho Shinkeigaku 45:411-5. 2005
    ....
  100. doi request reprint Variability in absolute apparent diffusion coefficient values across different platforms may be substantial: a multivendor, multi-institutional comparison study
    Makoto Sasaki
    Advanced Medical Research Center, Iwate Medical University, 19 1 Uchimaru, Morioka 020 8505, Japan
    Radiology 249:624-30. 2008
    ..To determine whether and to what degree absolute apparent diffusion coefficient (ADC) values vary between different imagers, vendors, field strengths, and intraimager conditions...