Naoto Hayashi

Summary

Affiliation: University of Tokyo
Country: Japan

Publications

  1. ncbi request reprint Hemangiomas in the face and extremities: MR-guided sclerotherapy--optimization with monitoring of signal intensity changes in vivo
    Naoto Hayashi
    Departments of Radiology, Faculty of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Radiology 226:567-72. 2003
  2. ncbi request reprint Utilization of low-field MR scanners
    Naoto Hayashi
    Department of Clinical Radiology, University of Tokyo Hospital, 7 3 1 Hongo, Tokyo, Japan
    Magn Reson Med Sci 3:27-38. 2004
  3. ncbi request reprint Polymicrogyria without porencephaly/schizencephaly. MRI analysis of the spectrum and the prevalence of macroscopic findings in the clinical population
    N Hayashi
    Department of Radiology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
    Neuroradiology 44:647-55. 2002
  4. ncbi request reprint Feasibility of a curvature-based enhanced display system for detecting cerebral aneurysms in MR angiography
    Naoto Hayashi
    Department of Radiology, Faculty of Medicine, University of Tokyo, Japan
    Magn Reson Med Sci 2:29-36. 2003
  5. ncbi request reprint Morphological features and associated anomalies of schizencephaly in the clinical population: detailed analysis of MR images
    N Hayashi
    Department of Radiology, Section of Neuroradiology, University of California San Francisco, USA
    Neuroradiology 44:418-27. 2002
  6. ncbi request reprint Accuracy of abnormal paraspinal muscle findings on contrast-enhanced MR images as indirect signs of unilateral cervical root-avulsion injury
    Naoto Hayashi
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Radiology 223:397-402. 2002
  7. doi request reprint Diffusion tensor imaging of the brain: effects of distortion correction with correspondence to numbers of encoding directions
    Takeharu Yoshikawa
    Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Radiat Med 26:481-7. 2008
  8. doi request reprint Bilateral pre- and postcentral gyrus volume positively correlates with T2-SNR of putamen in healthy adults
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Neuroradiology 55:245-50. 2013
  9. pmc Repeatability of measured brain volume by atlas-based method using T1-weighted image
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Digit Imaging 25:173-8. 2012
  10. doi request reprint Motion-robust diffusion tensor acquisition at routine 3T magnetic resonance imaging
    Hasina Yasmin
    Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Jpn J Radiol 28:27-33. 2010

Collaborators

Detail Information

Publications66

  1. ncbi request reprint Hemangiomas in the face and extremities: MR-guided sclerotherapy--optimization with monitoring of signal intensity changes in vivo
    Naoto Hayashi
    Departments of Radiology, Faculty of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Radiology 226:567-72. 2003
    ..This method of MR-guided sclerotherapy seems feasible for clinical application...
  2. ncbi request reprint Utilization of low-field MR scanners
    Naoto Hayashi
    Department of Clinical Radiology, University of Tokyo Hospital, 7 3 1 Hongo, Tokyo, Japan
    Magn Reson Med Sci 3:27-38. 2004
    ..Interventional and intraoperative use also supports the installation of low-field MR scanners. Utilization of low-field systems has the potential to enhance overall cost reductions with little or no loss of diagnostic performance...
  3. ncbi request reprint Polymicrogyria without porencephaly/schizencephaly. MRI analysis of the spectrum and the prevalence of macroscopic findings in the clinical population
    N Hayashi
    Department of Radiology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
    Neuroradiology 44:647-55. 2002
    ....
  4. ncbi request reprint Feasibility of a curvature-based enhanced display system for detecting cerebral aneurysms in MR angiography
    Naoto Hayashi
    Department of Radiology, Faculty of Medicine, University of Tokyo, Japan
    Magn Reson Med Sci 2:29-36. 2003
    ..To assess the feasibility of a curvature-based enhanced display system for detecting cerebral aneurysms in MR angiography...
  5. ncbi request reprint Morphological features and associated anomalies of schizencephaly in the clinical population: detailed analysis of MR images
    N Hayashi
    Department of Radiology, Section of Neuroradiology, University of California San Francisco, USA
    Neuroradiology 44:418-27. 2002
    ..Unilateral and bilateral clefts occur in a nearly equal frequency in the clinical population, in contrast to the high incidence of bilateral schizencephaly reported in the pathological literature...
  6. ncbi request reprint Accuracy of abnormal paraspinal muscle findings on contrast-enhanced MR images as indirect signs of unilateral cervical root-avulsion injury
    Naoto Hayashi
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Radiology 223:397-402. 2002
    ..To evaluate the accuracy of abnormal magnetic resonance (MR) findings in the paraspinal muscles as indirect signs of nerve-root avulsion injury...
  7. doi request reprint Diffusion tensor imaging of the brain: effects of distortion correction with correspondence to numbers of encoding directions
    Takeharu Yoshikawa
    Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Radiat Med 26:481-7. 2008
    ..The aim of the study was to estimate the effect of distortion correction with correspondence to numbers of encoding directions to acquire diffusion tensor imaging (DTI) of improved quality...
  8. doi request reprint Bilateral pre- and postcentral gyrus volume positively correlates with T2-SNR of putamen in healthy adults
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Neuroradiology 55:245-50. 2013
    ..0-T magnetic resonance (3T-MR) scanner...
  9. pmc Repeatability of measured brain volume by atlas-based method using T1-weighted image
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    J Digit Imaging 25:173-8. 2012
    ..Using smoothed images with large FWHM resulted in improved repeatability on orbital gyrus. This is the first report of repeatability in each brain structure and improved repeatability with smoothed images using the atlas-based method...
  10. doi request reprint Motion-robust diffusion tensor acquisition at routine 3T magnetic resonance imaging
    Hasina Yasmin
    Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Jpn J Radiol 28:27-33. 2010
    ..We compared different acquisition and reconstruction methods in phantom and human studies in the clinical setting to validate our hypothesis that optimizing the k-space acquisition and reconstruction method could decrease motion artifacts...
  11. ncbi request reprint Periodically rotated overlapping parallel lines with enhanced reconstruction-based diffusion tensor imaging. Comparison with echo planar imaging-based diffusion tensor imaging
    Osamu Abe
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    J Comput Assist Tomogr 28:654-60. 2004
    ..To evaluate diffusion tensor imaging (DTI) based on periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) compared with DTI based on single-shot echo planar imaging (EPI)...
  12. ncbi request reprint Flexible ex vivo phantoms for validation of diffusion tensor tractography on a clinical scanner
    Makoto Watanabe
    Department of Radiology, Graduate School of Medicine, The University of Tokyo, Bunkyo ku, Tokyo, 113 8655, Japan
    Radiat Med 24:605-9. 2006
    ..The aim of this study was to develop ex vivo diffusion tensor (DT) flexible phantoms...
  13. ncbi request reprint [In-vitro phantoms for estimating diffusion tensor tractography]
    Makoto Watanabe
    Department of Radiology, University of Tokyo
    Nihon Igaku Hoshasen Gakkai Zasshi 65:449-51. 2005
    ..On the polyester phantom, these tracts followed the course of the bundle whether it was straight or curved. These phantoms are useful for in-vitro evaluation of diffusion tensor tractography...
  14. ncbi request reprint The optimal trackability threshold of fractional anisotropy for diffusion tensor tractography of the corticospinal tract
    Akira Kunimatsu
    Department of Radiology, Graduate School of Medicine, Tokyo University, Hongo, Tokyo
    Magn Reson Med Sci 3:11-7. 2004
    ....
  15. pmc Meandering main pancreatic duct as a relevant factor to the onset of idiopathic recurrent acute pancreatitis
    Wataru Gonoi
    Department of Radiology, Graduate School of Medicine, The University of Tokyo, Bunkyo ku, Tokyo, Japan
    PLoS ONE 7:e37652. 2012
    ..However, no previous study has investigated its clinical significance. We aimed to determine the non-biased prevalence and the effect of MMPD on idiopathic pancreatitis using non-invasive magnetic resonance (MR) technique...
  16. ncbi request reprint Corticospinal tracts by diffusion tensor tractography in patients with arteriovenous malformations
    Daisuke Itoh
    Department of Radiology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
    J Comput Assist Tomogr 30:618-23. 2006
    ..To visualize the corticospinal tract (CST) in patients with arteriovenous malformations (AVMs) by using diffusion tensor tractography (DTT) and to confirm the clinical reliability of DTT in patients with AVMs...
  17. ncbi request reprint Amyotrophic lateral sclerosis: diffusion tensor tractography and voxel-based analysis
    Osamu Abe
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, 113 8655, Japan
    NMR Biomed 17:411-6. 2004
    ..These results suggested that the combination of voxel-based diffusion tensor analysis and diffusion tensor tractography might help determine the location of the affected neuronal tissues among ALS patients in a non-invasive manner...
  18. doi request reprint Accelerated hippocampal volume reduction in post-menopausal women: an additional study with Atlas-based method
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, Japan
    Radiol Phys Technol 4:185-8. 2011
    ..This study is useful for improving our understanding of the correlation between menopause and hippocampal volume reduction...
  19. ncbi request reprint Brachial plexus injury: clinical manifestations, conventional imaging findings, and the latest imaging techniques
    Takeharu Yoshikawa
    Department of Computational Diagnostic Radiology and Preventive Medicine, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo, Tokyo 113 8655, Japan
    Radiographics 26:S133-43. 2006
    ..Work-up will vary depending on the equipment used, the management policy of peripheral nerve surgeons, and, most important, the individual patient...
  20. ncbi request reprint Topography of the human corpus callosum using diffusion tensor tractography
    Osamu Abe
    Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    J Comput Assist Tomogr 28:533-9. 2004
    ..To evaluate the crossing fiber trajectory through the corpus callosum using distortion-corrected diffusion tensor tractography in the human brain...
  21. doi request reprint Entorhinal cortex volume measured with 3T MRI is positively correlated with the Wechsler Memory Scale-Revised logical/verbal memory score for healthy subjects
    Masami Goto
    Department of Radiological Technology, Graduate School of Medicine, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Neuroradiology 53:617-22. 2011
    ....
  22. doi request reprint Automated segmentation method for spinal column based on a dual elliptic column model and its application for virtual spinal straightening
    Shouhei Hanaoka
    Division of Radiology and Biomedical Engineering, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    J Comput Assist Tomogr 34:156-62. 2010
    ..Results on a database of 16 patients indicate the applicability of our method to spines affected by scoliosis and multiple bone metastases...
  23. ncbi request reprint Development of intraarterial contrast-enhanced 2D MRDSA with a 0.3 tesla open MRI system
    Tomohiko Masumoto
    Department of Radiology, Faculty of Medicine, University of Tokyo, Japan
    Magn Reson Med Sci 2:97-103. 2003
    ....
  24. doi request reprint High signal intensity in the dural sinuses on 3D-TOF MR angiography at 3.0 T
    Sachiko Inano
    Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    Clin Imaging 34:332-6. 2010
    ..The objective of this study was to examine the frequency of high signal intensity in the dural sinuses of normal subjects upon magnetic resonance (MR) angiography using 3.0-T scanners...
  25. doi request reprint Diffeomorphic Anatomical Registration Through Exponentiated Lie Algebra provides reduced effect of scanner for cortex volumetry with atlas-based method in healthy subjects
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Neuroradiology 55:869-75. 2013
    ....
  26. pmc Influence of signal intensity non-uniformity on brain volumetry using an atlas-based method
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, Tokyo 113 8655, Japan
    Korean J Radiol 13:391-402. 2012
    ..To address this shortcoming, the present study assessed whether N3 correction processing provides reduced system dependency in atlas-based volumetry...
  27. ncbi request reprint Quantitative evaluation of the pyramidal tract segmented by diffusion tensor tractography: feasibility study in patients with amyotrophic lateral sclerosis
    Shigeki Aoki
    Department of Radiology, University of Tokyo Hospital, Tokyo 113 8655, Japan
    Radiat Med 23:195-9. 2005
    ..The purpose of this study was to assess the clinical feasibility of ROI analysis using diffusion tensor tractography (DTT) in patients with amyotrophic lateral sclerosis (ALS)...
  28. ncbi request reprint 3T PROPELLER diffusion tensor fiber tractography: a feasibility study for cranial nerve fiber tracking
    Hiroyuki Kabasawa
    Department of Radiology, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Radiat Med 25:462-6. 2007
    ....
  29. doi request reprint Peritoneal fluid accumulation in healthy men and postmenopausal women: evaluation on pelvic MRI
    Takeharu Yoshikawa
    Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo, Tokyo 113 8655, Japan
    AJR Am J Roentgenol 200:1181-5. 2013
    ....
  30. doi request reprint Retroportal main pancreatic duct with circumportal pancreas: radiographic visualization
    Wataru Gonoi
    Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, Japan
    Clin Imaging 35:442-6. 2011
    ..We also reviewed the previous literature and discussed its best imaging method, etiology and clinical importance...
  31. ncbi request reprint MR imaging of ischemic penumbra
    Osamu Abe
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Eur J Radiol 46:67-78. 2003
    ..We also present the possible applications of advanced MR techniques, such as diffusion and perfusion imaging, concentrating on the delineation or detection of ischemic penumbra...
  32. doi request reprint Customization of normal data base specific for 3-tesla MRI is mandatory in VSRAD analysis
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, Tokyo, Japan
    Radiol Phys Technol 1:196-200. 2008
    ..The "Z-score of the parahippocampal gyrus" was 1.62 +/- 0.47 for the N-DB of VSRAD. The numerical value was high for the group of physically unimpaired persons...
  33. doi request reprint Spectrum of Epstein-Barr virus-related diseases: a pictorial review
    Eriko Maeda
    Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Jpn J Radiol 27:4-19. 2009
    ..Awareness of their clinical settings and imaging spectrum contributes to early detection and early treatment of possibly life-threatening disorders...
  34. doi request reprint Effects of gradient non-linearity correction and intensity non-uniformity correction in longitudinal studies using structural image evaluation using normalization of atrophy (SIENA)
    Hidemasa Takao
    Department of Radiology, Graduate School of Medicine, University of Tokyo, Bunkyo ku, Tokyo, Japan
    J Magn Reson Imaging 32:489-92. 2010
    ..To evaluate the effects of gradient nonlinearity correction and intensity nonuniformity correction on longitudinal (two-year) changes in global and regional brain volumes...
  35. doi request reprint Effects of age and gender on neuroanatomical volumes
    Sachiko Inano
    Department of Radiology, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
    J Magn Reson Imaging 37:1072-6. 2013
    ..To investigate age-related differences, gender differences, and age-by-gender interactions on the volumes of 18 neuroanatomical structures, with a large sample at a single institution...
  36. ncbi request reprint A pitfall of the volume rendering method with 3D time-of-flight MRA: a case of a branching vessel at the aneurysm neck
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, Tokyo, Japan
    Magn Reson Med Sci 12:53-6. 2013
    ..Decisions based only on VR with 3D-TOF-MRA can be a cause of suboptimal selection in clinical treatment...
  37. ncbi request reprint Automatic categorization of anatomical landmark-local appearances based on diffeomorphic demons and spectral clustering for constructing detector ensembles
    Shouhei Hanaoka
    Department of Radiology, Graduate School of Medicine, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo ku, Tokyo, Japan
    Med Image Comput Comput Assist Interv 15:106-13. 2012
    ..All of these trained detectors compose a detector ensemble to detect the target landmark. Evaluation with clinical CT datasets showed great improvement in the detection performance...
  38. pmc Brain reorganization in patients with brachial plexus injury: a longitudinal functional MRI study
    Takeharu Yoshikawa
    Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, 7 3 1 Hongo, Bunkyo, Tokyo, Japan
    ScientificWorldJournal 2012:501751. 2012
    ..035). The AI of the second fMRI significantly decreased compared with that of the first fMRI (P = 0.045). Brain reorganization associates with peripheral nervous changes after BPI and after operation for functional reconstruction...
  39. ncbi request reprint Bezier surface reformation: an original visualization technique of cervical nerve roots on myelographic CT
    Naoki Yoshioka
    Department of Radiology, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Radiat Med 24:600-4. 2006
    ..The aim of this study was to assess the feasibility of an original reformation method of cervical myelographic computed tomography (CT) using the Bezier surface technique...
  40. ncbi request reprint Normal aging in the central nervous system: quantitative MR diffusion-tensor analysis
    Osamu Abe
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, 113 8655 Tokyo, Japan
    Neurobiol Aging 23:433-41. 2002
    ..001) with advancing age. Quantitative diffusion tensor analysis correlate with normal aging and may help in assessing normal age-related changes and serve as a standard for comparison with neurodegenerative disorders...
  41. doi request reprint Tract-specific analysis of white matter pathways in healthy subjects: a pilot study using diffusion tensor MRI
    Hasina Yasmin
    Department of Radiology, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, 113 8655, Japan
    Neuroradiology 51:831-40. 2009
    ..We also attempted to clarify whether age and laterality exerted any effects on this study group...
  42. doi request reprint A longitudinal study of brain volume changes in normal aging
    Hidemasa Takao
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Eur J Radiol 81:2801-4. 2012
    ..To evaluate the effect of normal aging on brain volumes and examine the effects of age and sex on the rates of changes in global and regional brain volumes...
  43. doi request reprint Structural brain abnormalities in women with subclinical depression, as revealed by voxel-based morphometry and diffusion tensor imaging
    Yayoi K Hayakawa
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1, Hongo, Bunkyo ku, Tokyo, Japan
    J Affect Disord 144:263-8. 2013
    ....
  44. doi request reprint Effect of scanner in longitudinal diffusion tensor imaging studies
    Hidemasa Takao
    Department of Radiology, Graduate School of Medicine, University of Tokyo, Hongo, Bunkyo ku, Tokyo, Japan
    Hum Brain Mapp 33:466-77. 2012
    ..These results indicate that inter-scanner variability and scanner upgrade can significantly affect the results of longitudinal diffusion tensor imaging studies...
  45. ncbi request reprint [MR angiography]
    Shigeki Aoki
    Department of Radiology, Hospital, Faculty of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    No To Shinkei 54:851-7. 2002
  46. doi request reprint Radiology reading-caused fatigue and measurement of eye strain with critical flicker fusion frequency
    Eriko Maeda
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    Jpn J Radiol 29:483-7. 2011
    ..The aim of this study was to investigate eye fatigue that could impair diagnostic accuracy by measuring the critical flicker fusion frequency (CFFF) before and after reading...
  47. ncbi request reprint Radiation-induced arteritis: thickened wall with prominent enhancement on cranial MR images report of five cases and comparison with 18 cases of Moyamoya disease
    Shigeki Aoki
    Department of Radiology, University of Tokyo Hospital, 7 3 1 Hongo, Bunkyoku, Tokyo 113 8655, Japan
    Radiology 223:683-8. 2002
    ..To evaluate magnetic resonance (MR) imaging findings of radiation-induced cranial arteritis regarding arterial wall thickening and degree of enhancement, as well as to compare the findings with those of idiopathic moyamoya disease...
  48. doi request reprint 3 Tesla MRI detects accelerated hippocampal volume reduction in postmenopausal women
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital, Bunkyo ku, Tokyo, Japan
    J Magn Reson Imaging 33:48-53. 2011
    ..Many studies report the neuroprotective effects of estrogen and age-related brain volume changes; however, there are no studies regarding age-related change specific to hippocampal volume in terms of age, gender, and menopausal status...
  49. doi request reprint CT appearance of Epstein-Barr virus-associated gastric carcinoma
    Eriko Maeda
    Department of Radiology, University of Tokyo, Hongo, Bunkyo ku, Japan
    Abdom Imaging 34:618-25. 2009
    ..Radiologic features that may suggest the presence of Epstein-Barr virus in gastric carcinoma includes location in the upper part of the stomach, a large thickness-to-width ratio, and a bulky portion projecting from the gastric wall...
  50. doi request reprint MDCT demonstration of intraarticular gas in the glenohumeral joint and sternoclavicular joint with reference to arm position
    Haruhiko Ito
    Department of Radiology, Graduate School of Medicine, The University of Tokyo, Bunkyo ku, Tokyo, 113 8655, Japan
    Radiat Med 26:422-6. 2008
    ..Our purpose was to investigate the frequency of intraarticular gas in the glenohumeral joint and sternoclavicular joint, along with the influence of the patient's arm position...
  51. ncbi request reprint Partially uncrossed pyramidal tracts shown by tractography in horizontal gaze palsy and scoliosis
    Harushi Mori
    Department of Radiology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
    AJR Am J Roentgenol 184:S4-6. 2005
  52. doi request reprint Effect of scanner in longitudinal studies of brain volume changes
    Hidemasa Takao
    Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    J Magn Reson Imaging 34:438-44. 2011
    ..To evaluate the effects of drift in scanner hardware and inter-scanner variability on global and regional brain volume changes using longitudinal data obtained on two scanners of the exact same model...
  53. ncbi request reprint [Selective intraarterial infusion chemotherapy using a combined MRI-angiography system for head and neck cancers]
    Harushi Mori
    Department of Radiology, Graduate School of Medicine, University of Tokyo
    Nihon Igaku Hoshasen Gakkai Zasshi 62:32-4. 2002
    ..Thus, more ideal treatment could be provided. We consider MRI during arteriography to be useful in assessing for distribution during intraarterial chemotherapy...
  54. doi request reprint Effect of head size on diffusion tensor imaging
    Hidemasa Takao
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo, Japan
    Neuroimage 57:958-67. 2011
    ..When total intracranial volumes are significantly different between groups, it may be necessary to control for total intracranial volume in the statistical analysis, depending on the hypothesis being tested...
  55. doi request reprint Value of live 3D transoesophageal echocardiography in the diagnosis of mitral valve lesions
    Kansei Uno
    Department of Computational Radiology and Preventive Medicine, The University of Tokyo Hospital, Hongo 7 1 3, Bunkyo ku, Tokyo, Japan
    Eur J Echocardiogr 10:350-1. 2009
    ..We experienced a case in which live 3D transoesophageal echocardiography (TEE) was found much more valuable than 2D TEE in assessing mitral lesions in circumferential direction and making surgical plans for mitral valve prolapse...
  56. ncbi request reprint Assessment of major aortopulmonary collateral arteries with multidetector-row computed tomography
    Eriko Maeda
    Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Tokyo 113 8655, Japan
    Radiat Med 24:378-83. 2006
    ..MDCT studies may provide an efficient road map for safe and successful selective catheterization and may substitute for conventional angiography in patients with considerable risks...
  57. doi request reprint Pancreas divisum as a predisposing factor for chronic and recurrent idiopathic pancreatitis: initial in vivo survey
    Wataru Gonoi
    Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo 113 8655, Japan
    Gut 60:1103-8. 2011
    ..It is a controversial issue whether pancreas divisum (PD) induces pancreatitis. All previous studies have investigated this issue based on endoscopic procedures, which inevitably involve a selection bias...
  58. ncbi request reprint New method of using reconstructed images for assessment of patency of intracochlear spaces for cochlear implant candidates
    Shotaro Karino
    Department of Otolaryngology, Faculty of Medicine, University of Tokyo, Tokyo, Japan
    Laryngoscope 114:1253-8. 2004
    ..A new method of reconstruction using multidetector-row helical computed tomography (MDCT) was applied for assessment of cochlear patency in cochlear implantation candidates...
  59. ncbi request reprint MR diffusion tensor imaging: recent advance and new techniques for diffusion tensor visualization
    Yoshitaka Masutani
    Image Computing and Analysis Laboratory, Department of Radiology, University of Tokyo UT RAD ICAL, 7 3 1 Hongo Bunkyo ku, Tokyo 113 8655, Japan
    Eur J Radiol 46:53-66. 2003
    ..Several results of clinical application in our institute are also introduced. Finally, the limitations, advantages and disadvantages of the techniques are discussed for further application of diffusion tensor visualization...
  60. doi request reprint Effect of scanner in asymmetry studies using diffusion tensor imaging
    Hidemasa Takao
    Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
    Neuroimage 54:1053-62. 2011
    ..The results indicate that the use of multiple scanners increases variability of DTI asymmetry measurements, and can affect the results of cross-sectional and especially longitudinal DTI asymmetry studies...
  61. doi request reprint Development of an enzymatic assay for sphingomyelin with rapid and automatable performances: Analysis in healthy subjects and coronary heart disease patients
    Ryunosuke Ohkawa
    Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
    Clin Biochem 45:1463-70. 2012
    ..Sphingomyelin (SM) is an important choline group-containing phospholipid and is considered to be an independent risk factor for coronary heart disease...
  62. ncbi request reprint Intracranial extracerebral glioneuronal heterotopia. Case report and review of the literature
    Soichi Oya
    Department of Neurosurgery, Faculty of Medicine, University of Tokyo, Japan
    J Neurosurg 102:105-12. 2005
    ..More detailed case reports are necessary to understand fully the pathogenesis of IEGHs...
  63. ncbi request reprint [Distinguishing between occluded and low-flow vessels with PROPELLER DWI sequence: a phantom study]
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital
    Nihon Hoshasen Gijutsu Gakkai Zasshi 60:1519-25. 2004
    ..To evaluate the ability of periodically rotated overlapping parallel lines with enhanced reconstruction diffusion-weighted imaging (PROPELLER DWI) to distinguish between vessel occlusion and slow flow...
  64. ncbi request reprint [Evaluation of PROPELLER MR imaging: preliminary experiences]
    Harushi Mori
    University of Tokyo Hospital
    Nihon Igaku Hoshasen Gakkai Zasshi 62:287-9. 2002
    ..PROPELLER MR examinations were also performed in 66 patients for clinical use. PROPELLER MRI appears to be a promising and useful technique...
  65. ncbi request reprint [Simple visualization of the corticospinal pathway using tractography: one-ROI and two-ROI methods]
    Harushi Mori
    University of Tokyo
    Nihon Igaku Hoshasen Gakkai Zasshi 63:51-3. 2003
    ..We determined that the two-region-of-interest (ROI) method is superior to the one-ROI method...
  66. ncbi request reprint [Imaging characteristics of PROPELLER T2-weighted imaging]
    Masami Goto
    Department of Radiological Technology, University of Tokyo Hospital
    Nihon Hoshasen Gijutsu Gakkai Zasshi 60:1585-91. 2004
    ..Effective echo time (TE) changed with different echo train lengths (ETL) or different bandwidths on PROPELLER, and imaging contrast changed accordingly to be more effective...