S Naganawa

Summary

Affiliation: Nagoya University
Country: Japan

Publications

  1. ncbi request reprint Visualization of endolymphatic hydrops with MR imaging in patients with Ménière's disease and related pathologies: current status of its methods and clinical significance
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
    Jpn J Radiol 32:191-204. 2014
  2. pmc Multi-institutional analysis of early glottic cancer from 2000 to 2005
    Naoki Hirasawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, Aichi, 466 8550, Japan
    Radiat Oncol 7:122. 2012
  3. ncbi request reprint Three-dimensional visualization of endolymphatic hydrops after intravenous administration of single-dose gadodiamide
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Magn Reson Med Sci 12:147-51. 2013
  4. ncbi request reprint Imaging of Ménière's disease after intravenous administration of single-dose gadodiamide: utility of multiplication of MR cisternography and HYDROPS image
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 12:63-8. 2013
  5. ncbi request reprint Imaging of Ménière's disease by subtraction of MR cisternography from positive perilymph image
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 11:303-9. 2012
  6. ncbi request reprint Imaging of Ménière's disease after intravenous administration of single-dose gadodiamide: utility of subtraction images with different inversion time
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 11:213-9. 2012
  7. ncbi request reprint Imaging of endolymphatic and perilymphatic fluid after intravenous administration of single-dose gadodiamide
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 11:145-50. 2012
  8. ncbi request reprint Visualization of endolymphatic hydrops in Ménière's disease after single-dose intravenous gadolinium-based contrast medium: timing of optimal enhancement
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Magn Reson Med Sci 11:43-51. 2012
  9. ncbi request reprint Anatomical details of the brainstem and cranial nerves visualized by high resolution readout-segmented multi-shot echo-planar diffusion-weighted images using unidirectional MPG at 3T
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Japan
    Magn Reson Med Sci 10:269-75. 2011
  10. pmc Radiotherapy with or without chemotherapy for patients with T1-T2 glottic carcinoma: retrospective analysis
    Naoki Hirasawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa ku, Aichi, Japan
    Head Neck Oncol 2:20. 2010

Collaborators

Detail Information

Publications120 found, 100 shown here

  1. ncbi request reprint Visualization of endolymphatic hydrops with MR imaging in patients with Ménière's disease and related pathologies: current status of its methods and clinical significance
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
    Jpn J Radiol 32:191-204. 2014
    ..We also attempt to characterize the current significance and future directions of MR imaging of endolymphatic hydrops. ..
  2. pmc Multi-institutional analysis of early glottic cancer from 2000 to 2005
    Naoki Hirasawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, Aichi, 466 8550, Japan
    Radiat Oncol 7:122. 2012
    ..The purpose of this study is to analyze the outcome of patients with early glottic cancer (GC) treated with radiotherapy (RT) with or without chemotherapy at 10 institutions in the Tokai District, Japan...
  3. ncbi request reprint Three-dimensional visualization of endolymphatic hydrops after intravenous administration of single-dose gadodiamide
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Magn Reson Med Sci 12:147-51. 2013
    ..Such dimensional visualization will aid understanding of the pathophysiology of Ménière's disease. ..
  4. ncbi request reprint Imaging of Ménière's disease after intravenous administration of single-dose gadodiamide: utility of multiplication of MR cisternography and HYDROPS image
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 12:63-8. 2013
    ..Ten patients with suspected Ménière's disease were included. The average CNR of generated images increased to more than 200 times that of HYDROP images...
  5. ncbi request reprint Imaging of Ménière's disease by subtraction of MR cisternography from positive perilymph image
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 11:303-9. 2012
    ....
  6. ncbi request reprint Imaging of Ménière's disease after intravenous administration of single-dose gadodiamide: utility of subtraction images with different inversion time
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 11:213-9. 2012
    ..Subtraction significantly improved the contrast noise ratio between endolymph and perilymph and the subjective visibility score for endolymphatic space. The 24 patients with the suspect of Ménière's disease were included...
  7. ncbi request reprint Imaging of endolymphatic and perilymphatic fluid after intravenous administration of single-dose gadodiamide
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 11:145-50. 2012
    ..We observed high signal of cochlear endolymph in 17 ears with cochlear endolymphatic hydrops but not 11 ears without cochlear endolymphatic hydrops...
  8. ncbi request reprint Visualization of endolymphatic hydrops in Ménière's disease after single-dose intravenous gadolinium-based contrast medium: timing of optimal enhancement
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Magn Reson Med Sci 11:43-51. 2012
    ..We investigated if that optimal timing is earlier or later than 4 hours...
  9. ncbi request reprint Anatomical details of the brainstem and cranial nerves visualized by high resolution readout-segmented multi-shot echo-planar diffusion-weighted images using unidirectional MPG at 3T
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Japan
    Magn Reson Med Sci 10:269-75. 2011
    ....
  10. pmc Radiotherapy with or without chemotherapy for patients with T1-T2 glottic carcinoma: retrospective analysis
    Naoki Hirasawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa ku, Aichi, Japan
    Head Neck Oncol 2:20. 2010
    ..To assess the results for local control (LC) and survival in patients with early-stage glottic cancer (GC) who were treated by radiotherapy (RT) with or without chemotherapy...
  11. ncbi request reprint Contrast enhancement of the anterior eye segment and subarachnoid space: detection in the normal state by heavily T2-weighted 3D FLAIR
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 10:193-9. 2011
    ....
  12. ncbi request reprint Diffusion-weighted imaging of the liver: technical challenges and prospects for the future
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Japan
    Magn Reson Med Sci 4:175-86. 2005
    ..Our current trial of new pulse sequencing, such as SPIO-mediated breath-holding black-blood fluid-attenuated inversion recovery (BH-BB-FLAIR), imaging is shown. Some prospects for the future in DWI of the liver are also stated...
  13. ncbi request reprint Observation of contrast enhancement in the cochlear fluid space of healthy subjects using a 3D-FLAIR sequence at 3 Tesla
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
    Eur Radiol 16:733-7. 2006
    ..However, visual differentiation of endolymph and perilymph fluid could not be achieved. Using 3D-FLAIR and Gd-DTPA, cochlear fluid enhancement can be observed in healthy human ears, even with a single dose of contrast-medium injection...
  14. ncbi request reprint Apparent diffusion coefficient in cervical cancer of the uterus: comparison with the normal uterine cervix
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
    Eur Radiol 15:71-8. 2005
    ..Further study is necessary to determine the accuracy of ADC measurement in monitoring the treatment response...
  15. ncbi request reprint High-speed imaging at 3 Tesla: a technical and clinical review with an emphasis on whole-brain 3D imaging
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, Japan
    Magn Reson Med Sci 3:177-87. 2004
    ..Some images from clinical cases are presented...
  16. ncbi request reprint Optimization of diffusion-tensor MR imaging data acquisition parameters for brain fiber tracking using parallel imaging at 3 T
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, 466 8550 Nagoya, Japan
    Eur Radiol 14:234-8. 2004
    ..The DT MRI data sufficient for brain fiber tracking in healthy subjects can be obtained in <2 min with a 2-mm slice thickness, 700-s/mm2 b-factor, 6 MPG directions, and no averaging (number of averages=1)...
  17. ncbi request reprint Diffusion-weighted images of the liver: comparison of tumor detection before and after contrast enhancement with superparamagnetic iron oxide
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    J Magn Reson Imaging 21:836-40. 2005
    ..To study the recognition of malignant lesions of the liver on diffusion-weighted images (DWI) can be improved by the administration of superparamagnetic iron oxide (SPIO)...
  18. ncbi request reprint Visualization of endolymphatic hydrops after intratympanic injection of Gd-DTPA: comparison of 2D and 3D real inversion recovery imaging
    Shinji Naganawa
    Department of Radiology, Nagoya University, Graduate School of Medicine, Shouwa ku, Nagoya, Japan
    Magn Reson Med Sci 10:101-6. 2011
    ..This technique enables differentiation of bone and endo- and perilymph space on a single image but requires 15 min of scan time. Therefore, we compared it with 2D real IR, which is faster...
  19. doi request reprint Separate visualization of endolymphatic space, perilymphatic space and bone by a single pulse sequence; 3D-inversion recovery imaging utilizing real reconstruction after intratympanic Gd-DTPA administration at 3 Tesla
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
    Eur Radiol 18:920-4. 2008
    ..In conclusion, by optimizing the inversion time, endolymphatic space, perilymphatic space and surrounding bone can be separately visualized on a single image using a 3D-IR TSE with real reconstruction...
  20. ncbi request reprint Endolymphatic hydrops of the labyrinth visualized on noncontrast MR imaging: a case report
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa ku, Nagoya, Japan
    Magn Reson Med Sci 8:43-6. 2009
    ..This is the first imaging report to show endolymphatic hydrops visualized by noncontrast-enhanced MR imaging in a living human patient...
  21. doi request reprint Imaging of endolymphatic and perilymphatic fluid at 3T after intratympanic administration of gadolinium-diethylene-triamine pentaacetic acid
    S Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    AJNR Am J Neuroradiol 29:724-6. 2008
    ..Fusion of the 2 types of images visualized the entire fluid space of the labyrinth and the spatial relationship of the 2 spaces...
  22. ncbi request reprint Contrast-enhanced MR imaging of the brain using T1-weighted FLAIR with BLADE compared with a conventional spin-echo sequence
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
    Eur Radiol 18:337-42. 2008
    ..6% respectively, while on axial T1W-FLAIR BLADE they were 100% and 100%. T1W-FLAIR BLADE seems to be capable of replacing T1W-SE, at least for axial post-contrast imaging to detect brain metastases...
  23. ncbi request reprint Imaging endolymphatic hydrops at 3 tesla using 3D-FLAIR with intratympanic Gd-DTPA administration
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 7:85-91. 2008
    ..We evaluated whether 3D-FLAIR-VFL could replace 3D-FLAIR-CONV in detecting endolymphatic hydrops after intratympanic Gd-DTPA administration...
  24. doi request reprint Three-dimensional (3D) visualization of endolymphatic hydrops after intratympanic injection of Gd-DTPA: optimization of a 3D-real inversion-recovery turbo spin-echo (TSE) sequence and application of a 32-channel head coil at 3T
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    J Magn Reson Imaging 31:210-4. 2010
    ....
  25. ncbi request reprint Detection of presumed hemorrhage in the ampullar endolymph of the semicircular canal: a case report
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 8:187-91. 2009
    ..The 3D-FLAIR images demonstrated a small amount of focal hemorrhage in the labyrinthine fluid that may have been overlooked on T(1)-weighted images...
  26. ncbi request reprint Estimation of gadolinium-induced T1-shortening with measurement of simple signal intensity ratio between the cochlea and brain parenchyma on 3D-FLAIR: correlation with T1 measurement by TI scout sequence
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 9:17-22. 2010
    ..We evaluated the feasibility of measuring simple signal intensity ratio by correlating rapid T(1) measurements using an inversion time (TI) scout sequence...
  27. ncbi request reprint Increased sensitivity to low concentration gadolinium contrast by optimized heavily T2-weighted 3D-FLAIR to visualize endolymphatic space
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa ku, Nagoya, Japan
    Magn Reson Med Sci 9:73-80. 2010
    ....
  28. ncbi request reprint Simultaneous three-dimensional visualization of the intra-parotid facial nerve and parotid duct using a three-dimensional reversed FISP sequence with diffusion weighting
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 9:153-8. 2010
    ..We also present volumetric representation of the facial nerve and duct...
  29. ncbi request reprint Prompt contrast enhancement of cerebrospinal fluid space in the fundus of the internal auditory canal: observations in patients with meningeal diseases on 3D-FLAIR images at 3 Tesla
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Japan
    Magn Reson Med Sci 5:151-5. 2006
    ..Enhancement in the IAC fundus was frequently observed in patients with meningeal disease, even just 10 min after administration of contrast agent. This enhancement in the IAC fundus was never visible on T1-weighted 3D-FLASH images...
  30. ncbi request reprint Visualization of endolymphatic hydrops in Ménière's disease with single-dose intravenous gadolinium-based contrast media using heavily T(2)-weighted 3D-FLAIR
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa, Nagoya, Japan
    Magn Reson Med Sci 9:237-42. 2010
    ..This technique can be implemented in a clinical setting...
  31. doi request reprint Communication between cochlear perilymph and cerebrospinal fluid through the cochlear modiolus visualized after intratympanic administration of Gd-DTPA
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, Japan
    Radiat Med 26:597-602. 2008
    ..The purpose of this study was to evaluate how frequently this occurs and to investigate the specific features of patients who lack this communication...
  32. ncbi request reprint Comparison of flow artifacts between 2D-FLAIR and 3D-FLAIR sequences at 3 T
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, Japan
    Eur Radiol 14:1901-8. 2004
    ..Further study is necessary to compare the clinical efficacy between 2D-FLAIR and 3D-FLAIR in depicting subtle abnormalities...
  33. ncbi request reprint Contrast-enhanced MR imaging of the endolymphatic sac in patients with sudden hearing loss
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Eur Radiol 12:1121-6. 2002
    ....
  34. ncbi request reprint Regional differences of fMR signal changes induced by hyperventilation: comparison between SE-EPI and GE-EPI at 3-T
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, Nagoya, Japan
    J Magn Reson Imaging 15:23-30. 2002
    ....
  35. ncbi request reprint Pseudostenosis of the internal carotid artery in 3D time-of-flight MR angiography: effects of a magnetization transfer contrast pulse and metallic material
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, 466 8550 Nagoya, Japan
    Eur Radiol 13:2298-303. 2003
    ..Selective MR angiography using this phenomenon can be applied on varieties of MR scanners from different vendors...
  36. ncbi request reprint Regional ADC values of the normal brain: differences due to age, gender, and laterality
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Eur Radiol 13:6-11. 2003
    ..The knowledge obtained in this study may be helpful to understand the developmental and aging mechanisms of normal brain and may be useful for the future quantitative study as a reference...
  37. ncbi request reprint High-resolution T1-weighted 3D real IR imaging of the temporal bone using triple-dose contrast material
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, 466 8550 Nagoya, Japan
    Eur Radiol 13:2650-8. 2003
    ..5 t...
  38. doi request reprint Endolympathic hydrops in patients with vestibular schwannoma: visualization by non-contrast-enhanced 3D FLAIR
    Shinji Naganawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
    Neuroradiology 53:1009-15. 2011
    ....
  39. ncbi request reprint Virtual endoscopy of the labyrinth, using a 3D-FastASE sequence
    S Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    J Magn Reson Imaging 13:792-6. 2001
    ..The (0.6-mm) voxel data with ZIP satisfies the minimum requirements for VE for evaluation of the complex 3D anatomy and pathology of the labyrinth. J. Magn. Reson. Imaging 2001;13:792-796...
  40. ncbi request reprint Flow ghost artifact in slice-encoding direction mimicking vestibular schwannoma in contrast-enhanced 3D spoiled gradient-echo sequence
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, 466 8550 Nagoya, Japan
    Eur Radiol 14:496-9. 2004
    ..In addition, we conducted a volunteer study to demonstrate that changing the k-space trajectory can reduce this artifact in post-contrast 3D SPGR images...
  41. ncbi request reprint Pre-surgical mapping of primary motor cortex by functional MRI at 3 T: effects of intravenous administration of Gd-DTPA
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, 466 8550, Nagoya, Japan
    Eur Radiol 14:112-4. 2004
    ..07+/-0.39 in pre-contrast runs and 3.86+/-1.91 in post-contrast runs ( p=0.16). Pre-surgical localization of the motor area by BOLD-fMRI should be performed before the administration of Gd contrast material...
  42. ncbi request reprint Serial MR imaging studies in enlarged endolymphatic duct and sac syndrome
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Eur Radiol 12:S114-7. 2002
    ..The finding that the EES volume and signal intensity vary dynamically independently of hearing is important for future research into the pathophysiology of hearing loss in this syndrome...
  43. ncbi request reprint Enlarged endolymphatic duct and sac syndrome: relationship between MR findings and genotype of mutation in Pendred syndrome gene
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, Nagoya, Japan
    Magn Reson Imaging 22:25-30. 2004
    ..PDS gene mutations may not be the only cause of EEDS, and the mechanisms underlying EEDS remain unclear...
  44. ncbi request reprint Whole-brain vascular reactivity measured by fMRI using hyperventilation and breath-holding tasks: efficacy of 3D prospective acquisition correction (3D-PACE) for head motion
    Shinji Naganawa
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Shouwa ku, 466 8550 Nagoya, Japan
    Eur Radiol 14:1484-8. 2004
    ..We conclude that 3D-PACE is beneficial for fMRI studies of whole-brain vascular reactivity induced by hyperventilation and breath-holding...
  45. ncbi request reprint MR cisternography of the cerebellopontine angle: comparison of three-dimensional fast asymmetrical spin-echo and three-dimensional constructive interference in the steady-state sequences
    S Naganawa
    Department of Radiology, Nagoya University School of Medicine, Nagoya, Japan
    AJNR Am J Neuroradiol 22:1179-85. 2001
    ..MR cisternography has been used as the noninvasive screening tool of the cerebellopontine angle. The purpose of this study was to directly compare two currently dominant types of sequences for heavily T2-weighted MR cisternography...
  46. doi request reprint 3 Tesla magnetic resonance imaging obtained 4 hours after intravenous gadolinium injection in patients with sudden deafness
    Mitsuhiko Tagaya
    Department of Otorhinolaryngology, Nagoya University, Graduate School of Medicine, Nagoya, Japan
    Acta Otolaryngol 130:665-9. 2010
    ..The signal intensity ratio (SIR) between the cochlea and cerebellum may be a good indicator of disruption of the blood-labyrinthine barrier...
  47. doi request reprint Comparison of contrast effect on the cochlear perilymph after intratympanic and intravenous gadolinium injection
    M Yamazaki
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    AJNR Am J Neuroradiol 33:773-8. 2012
    ..The purpose of this study was to compare the degree of perilymph enhancement with the 2 methods and the perilymph contrast-effect difference with the IV-method in both sides in patients with unilateral Ménière disease...
  48. ncbi request reprint Magnitude subtraction vs. complex subtraction in dynamic contrast-enhanced 3D-MR angiography: basic experiments and clinical evaluation
    S Naganawa
    Department of Radiology, Nagoya University School of Medicine, Nagoya 466 8550, Japan
    J Magn Reson Imaging 10:813-20. 1999
    ..J. Magn. Reson. Imaging 1999;10:813-820...
  49. ncbi request reprint Phenotypes associated with replacement of His by Arg in the Pendred syndrome gene
    E Sato
    Department of Otorhinolarngology, Nagoya University School of Medicine, 466 8550 Nagoya, Japan
    Eur J Endocrinol 145:697-703. 2001
    ..Recently, mutations in the Pendred syndrome gene (PDS) have been reported in patients with EVA, in addition to those with classical Pendred syndrome...
  50. doi request reprint Endolymphatic space imaging in patients with delayed endolymphatic hydrops
    Sachio Kasai
    Department of Otorhinolaryngology, Graduate School of Medicine, Nagoya University, 65 Tsurumai Cho, Showa Ku, Nagoya, Japan
    Acta Otolaryngol 129:1169-74. 2009
    ..Magnetic resonance imaging (MRI) after intratympanic gadolinium injection can reveal endolymphatic hydrops (ELH) in patients with delayed ELH (DELH). Patients with contralateral DELH may have bilateral ELH...
  51. ncbi request reprint Contrast-enhanced MR angiography of the carotid artery using 3D time-resolved imaging of contrast kinetics: comparison with real-time fluoroscopic triggered 3D-elliptical centric view ordering
    S Naganawa
    Department of Radiology, Nagoya University School of Medicine, Japan
    Radiat Med 19:185-92. 2001
    ..Furthermore, 3D-TRICKS can achieve higher temporal resolution. For the spatial resolution employed in this study, 3D-TRICKS may be the method of choice...
  52. ncbi request reprint Contrast enhancement of the cochlear aqueduct in MR imaging: its frequency and clinical significance
    T Nakamura
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, 466 8550 Shouwa ku, Nagoya, Japan
    Neuroradiology 45:626-30. 2003
    ..The results of this study may prove helpful in avoiding unnecessary examinations and potential diagnostic confusion...
  53. ncbi request reprint Vestibular aqueduct in sudden sensorineural hearing loss
    M Sugiura
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    J Laryngol Otol 122:887-92. 2008
    ..To evaluate the vestibular aqueduct in patients with sudden sensorineural hearing loss...
  54. ncbi request reprint Aortoiliac stenooculusive disease and aneurysms: screening with non-contrast enhanced two-dimensional cardiac gated cine phase contrast MR angiography with multiple velocity encoded values and cardiac gated two-dimensional time-of-flight MR angiography
    S Naganawa
    Department of Radiology, Nagoya University School of Medicine, Japan
    Radiat Med 19:99-105. 2001
    ..1%) and high specificities (98.8 and 99.4%) were obtained. CONCLUSION: These results suggest that the performance of two non-contrast enhanced MRA techniques may be valuable as a screening tool when the two methods are applied together...
  55. ncbi request reprint Accuracy of plastic replica of aortic aneurysm using 3D-CT data for transluminal stent-grafting: experimental and clinical evaluation
    K Kato
    Department of Radiology, Nagoya University School of Medicine, Nagoya, Japan
    J Comput Assist Tomogr 25:300-4. 2001
    ..The accuracy of the replica was evaluated by measurement of vessel phantoms and clinical 3D--CT data...
  56. doi request reprint CT findings in autoimmune pancreatitis: assessment using multiphase contrast-enhanced multisection CT
    K Suzuki
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwaku, Nagoya, Japan
    Clin Radiol 65:735-43. 2010
    ..To assess the spectrum of findings using multiphase contrast-enhanced computed tomography (CT) in patients with autoimmune pancreatitis (AIP)...
  57. ncbi request reprint MR imaging of the cochlear modiolus after intratympanic administration of Gd-DTPA
    Hisashi Kawai
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 9:23-9. 2010
    ..Although the cochlear modiolus has been considered the route for this communication, this has not been confirmed through direct visualization of its enhancement...
  58. doi request reprint CT findings of intraductal papillary neoplasm of the bile duct: assessment with multiphase contrast-enhanced examination using multi-detector CT
    H Ogawa
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Clin Radiol 67:224-31. 2012
    ..To evaluate multi-detector computed tomography (MDCT) findings of intraductal papillary neoplasm of the bile duct (IPNB), a neoplasm that is considered to be the biliary counterpart of pancreatic intraductal papillary mucinous neoplasm...
  59. ncbi request reprint CT and MR imaging of pancreatic cancer
    T Ishiguchi
    Department of Radiology, Aichi Medical University, 21 Nagakute cho, Aichi Gun, Aichi Ken, 480 1195, Japan
    Hepatogastroenterology 48:923-7. 2001
    ..When advanced magnetic resonance imaging equipment is used as a primary modality, in the future, it may have a possibility to replace other imaging modalities...
  60. doi request reprint Lymphoplasmacytic sclerosing cholangitis: assessment of clinical, CT, and pathological findings
    S Itoh
    Department of Technical Radiology, Nagoya University School of Health Sciences, Nagoya, Japan
    Clin Radiol 64:1104-14. 2009
    ..To assess the clinical, computed tomography (CT), and pathological findings in patients with lymphoplasmacytic sclerosing cholangitis...
  61. ncbi request reprint Parry-Romberg syndrome with a clinically silent white matter lesion
    A Okumura
    Department of Pediatrics, Nagoya University Graduate School of Medicine, Aichi, Japan
    AJNR Am J Neuroradiol 27:1729-31. 2006
    ..Pyramidal tracts and optic radiations were preserved on diffusion tensor tractography. We will correlate these neuroimaging findings with normal psychomotor development in our patient...
  62. ncbi request reprint Hearing loss in patients with enlarged vestibular aqueduct: air-bone gap and audiological Bing test
    Tamie Mimura
    Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan
    Int J Audiol 44:466-9. 2005
    ....
  63. ncbi request reprint Visualization of a high protein concentration in the cochlea of a patient with a large endolymphatic duct and sac, using three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging
    M Sugiura
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    J Laryngol Otol 120:1084-6. 2006
    ..To evaluate the inner ear of a patient with an enlarged vestibular aqueduct and acute hearing deterioration, using three-dimensional fluid-attenuated inversion recovery (3D FLAIR) magnetic resonance imaging (MRI)...
  64. ncbi request reprint Relationship between CT densitometry with a slice thickness of 0.5 mm and audiometry in otosclerosis
    Setsuko Kawase
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Nagoya, Japan
    Eur Radiol 16:1367-73. 2006
    ..These results suggest the semi-automated diagnosis of otosclerosis may be possible...
  65. ncbi request reprint The role of contrast-enhanced MR mammography for determining candidates for breast conservation surgery
    Yu Zhang
    Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai Cho, Showa Ku, Nagoya 466 8550, Japan
    Breast Cancer 9:231-9. 2002
    ..The aim of this study was to assess the impact of preoperative magnetic resonance mammography (MRM) on the surgical determination of breast conservation treatment for breast cancer patients...
  66. ncbi request reprint Tympanometric findings in patients with enlarged vestibular aqueducts
    Eisuke Sato
    Department of Otorhinolaryngology, Nagoya University School of Medicine, Japan
    Laryngoscope 112:1642-6. 2002
    ....
  67. ncbi request reprint Blood flow to the promontory in cochlear otosclerosis
    T Nakashima
    Department of Otorhinolaryngology, Nagoya University School of Medicine, Showa Ku, Japan
    Clin Otolaryngol 31:110-5. 2006
    ..To investigate Schwartze sign with measurements of blood flow to the promontory in patients with cochlear otosclerosis...
  68. ncbi request reprint Interobserver agreement in sonographic diagnosis of breast tumors
    K Shimamoto
    Division of Medical Radiological Technology, Department of Radiological Technology, Nagoya University School of Health Sciences, 1 1 20 Daikominami, Higasi ku, Nagoya 461 8673, Japan
    Eur J Ultrasound 8:25-31. 1998
    ..To evaluate interobserver agreement in the interpretation of breast ultrasonography...
  69. ncbi request reprint Imaging of a congenital perilymphatic fistula
    Tsutomu Nakashima
    Department of Otorhinolaryngology, Nagoya University School of Medicine, 65, Tsurumai cho, Showa Ku, Japan
    Int J Pediatr Otorhinolaryngol 67:421-5. 2003
    ..Surgery to close the fistula showed a perforation in the stapes footplate...
  70. doi request reprint Increased signal intensity of the cochlea on pre- and post-contrast enhanced 3D-FLAIR in patients with vestibular schwannoma
    Masahiro Yamazaki
    Department of Radiology, Graduate School of Medicine, Nagoya University, 65 Tsurumai Cho, Showa Ku, Nagoya 466 8550, Japan
    Neuroradiology 51:855-63. 2009
    ....
  71. doi request reprint Comparisons of I-123 diagnostic and I-131 post-treatment scans for detecting residual thyroid tissue and metastases of differentiated thyroid cancer
    Shingo Iwano
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa ku, Nagoya, Japan
    Ann Nucl Med 23:777-82. 2009
    ..We assessed the performance of 37 MBq I-123 as a diagnostic imaging agent in patients with differentiated thyroid cancer using comparisons with their corresponding high-dose post-treatment I-131 scans...
  72. doi request reprint 3D-FLAIR MRI in facial nerve paralysis with and without audio-vestibular disorder
    Seiichi Nakata
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Acta Otolaryngol 130:632-6. 2010
    ..This MRI technique may contribute to elucidation of the pathology of Ramsay Hunt syndrome and Bell's palsy...
  73. doi request reprint Relationship between the degree of endolymphatic hydrops and electrocochleography
    Masako Yamamoto
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Audiol Neurootol 15:254-60. 2010
    ..This may imply that elevation of the SP/AP ratio is related to not only the degree of endolymphatic hydrops but also to the persistence of hydrops...
  74. doi request reprint Imaging findings in a case with cholesteatoma in complete aural atresia
    Michihiko Sone
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Am J Otolaryngol 31:297-9. 2010
    ....
  75. ncbi request reprint Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging findings in a patient with cochlear otosclerosis
    Makoto Sugiura
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine 65, Tsurumai cho, Showa Ku, Nagoya 466 8550, Japan
    Auris Nasus Larynx 35:269-72. 2008
    ..Our findings suggest that the breakdown of the blood-labyrinth barrier is associated with a part of SNHL in cochlear otosclerosis...
  76. ncbi request reprint Signal alteration of the cochlear perilymph on 3 different sequences after intratympanic Gd-DTPA administration at 3 tesla: comparison of 3D-FLAIR, 3D-T1-weighted imaging, and 3D-CISS
    Masahiro Yamazaki
    Department of Radiology, Nagoya University Graduate School of Medicine, Shouwa ku, Nagoya, Japan
    Magn Reson Med Sci 9:65-71. 2010
    ....
  77. ncbi request reprint 3D-FLAIR MRI findings in a patient with Ramsay Hunt syndrome
    Makoto Sugiura
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Showa Ku, Nagoya 466 8550, Japan
    Acta Otolaryngol 127:547-9. 2007
    ..3D-FLAIR could be a useful diagnostic tool in the early stages of Ramsay Hunt syndrome...
  78. ncbi request reprint 3D-FLAIR magnetic resonance imaging in the evaluation of mumps deafness
    Hironao Otake
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, 65, Tsurumai cho, Showa Ku, Nagoya 466 8550, Japan
    Int J Pediatr Otorhinolaryngol 70:2115-7. 2006
    ..This is the first case demonstrating a high 3D-FLAIR MRI signal of the inner ear in a patient with mumps deafness. Our findings suggest that 3D-FLAIR MRI may help to identify and define labyrinthitis in mumps deafness...
  79. doi request reprint Arteriovenous malformation of the pancreas: assessment of clinical and multislice CT features
    Hiroshi Ogawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Showa Ku, Nagoya 466 8560, Japan
    Abdom Imaging 34:743-52. 2009
    ..This study was undertaken to analyze the clinical and CT features of arteriovenous malformation (AVM) of the pancreas...
  80. ncbi request reprint Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging findings in patients with sudden sensorineural hearing loss
    Makoto Sugiura
    Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Showa Ku, Nagoya 466 8550, Japan
    Laryngoscope 116:1451-4. 2006
    ..To evaluate the inner ear in sudden sensorineural hearing loss (SNHL) using three-dimensional fluid-attenuated inversion recovery (3D-FLAIR) magnetic resonance imaging (MRI) at 3 Tesla (T)...
  81. ncbi request reprint Inner ear hemorrhage in systemic lupus erythematosus
    Makoto Sugiura
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Laryngoscope 116:826-8. 2006
    ..This is the first published case of inner ear hemorrhage in a patient with SLE. Our findings suggest that inner ear hemorrhage is associated with hearing deterioration in some patients with SLE...
  82. ncbi request reprint Long-term follow-up in patients with Pendred syndrome: vestibular, auditory and other phenotypes
    Makoto Sugiura
    Department of Otorhinolaryngology, Nagoya University School of Medicine, 466 8550 Nagoya, Japan
    Eur Arch Otorhinolaryngol 262:737-43. 2005
    ..Whether environmental factors or a subtype of the Pds mutation H723R are related to the long-term outcome for these patients must be clarified...
  83. ncbi request reprint Magnetic resonance imaging of endolymphatic sac in acute low-tone sensorineural hearing loss without vertigo
    Makoto Sugiura
    Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan
    ORL J Otorhinolaryngol Relat Spec 65:254-60. 2003
    ..The present study demonstrated that the frequency of visualization and enhancement of the endolymphatic sac in patients with ALHL was not significantly higher than in control subjects...
  84. doi request reprint Endolymphatic hydrops revealed by intravenous gadolinium injection in patients with Ménière's disease
    Tsutomu Nakashima
    Department of Otorhinolaryngology, Nagoya University, Nagoya, Japan
    Acta Otolaryngol 130:338-43. 2010
    ..Visualization of endolymphatic hydrops became possible after intravenous gadolinium (Gd) injection in patients with Ménière's disease...
  85. doi request reprint Stenosis of the third portion of the duodenum due to bleeding from the anterior pancreaticoduodenal artery: assessment by multiphase contrast-enhanced examination with multislice CT
    Shigeki Itoh
    Department of Technical Radiology, Nagoya University School of Health Sciences, 1 1 20 Daikou Minami, Higashi ku, Nagoya, Aichi 461 8673, Japan
    Abdom Imaging 35:393-8. 2010
    ..This study was undertaken to analyze the CT findings for the rare pathological process that stenosis of the third portion of the duodenum was presumed to be caused by bleeding from the anterior pancreaticoduodenal artery...
  86. ncbi request reprint Contrast-enhanced MR imaging of metastatic brain tumor at 3 tesla: utility of T(1)-weighted SPACE compared with 2D spin echo and 3D gradient echo sequence
    Tomohiro Komada
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 7:13-21. 2008
    ..In detection of brain metastases at 3T magnetic resonance (MR) imaging, SPACE imaging may provide an effective, alternative approach to MP-RAGE imaging for 3D T(1)-weighted imaging...
  87. ncbi request reprint Visualization of neuromelanin in the Substantia nigra and locus ceruleus at 1.5T using a 3D-gradient echo sequence with magnetization transfer contrast
    Toshiki Nakane
    Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Magn Reson Med Sci 7:205-10. 2008
    ..In the present study, we successfully detected neuromelanin in the SNc and LC of 6 healthy volunteers at 1.5T using a 3D gradient echo sequence with off-resonance magnetization transfer contrast...
  88. doi request reprint Intraductal papillary mucinous neoplasm of the pancreas: assessment of the likelihood of invasiveness with multisection CT
    Hiroshi Ogawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Showa Ku, Nagoya 466 8560, Japan
    Radiology 248:876-86. 2008
    ..To evaluate the capabilities of multisection computed tomography (CT) in determining the likelihood of invasiveness of intraductal papillary mucinous neoplasm (IPMN)...
  89. doi request reprint Stent-graft treatment for bleeding superior mesenteric artery pseudoaneurysm after pancreaticoduodenectomy
    Kojiro Suzuki
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, Japan
    Cardiovasc Intervent Radiol 32:762-6. 2009
    ..The other patient died of sepsis and stent-graft infection 5 months later. These patients remained free of intraperitoneal rebleeding during the follow-up period...
  90. doi request reprint 3D-CT volumetry of the lung using multidetector row CT: comparison with pulmonary function tests
    Shingo Iwano
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tshurumai cho, Shouwa ku, Nagoya, 466 8550, Japan
    Acad Radiol 16:250-6. 2009
    ....
  91. doi request reprint Neuroendocrine tumor in the breast
    Hiroshi Ogawa
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Showa Ku, Nagoya 466 8560, Japan
    Radiat Med 26:28-32. 2008
    ..Both of the tumors were resected, and a primary breast neuroendocrine tumor (solid neuroendocrine carcinoma) and peritoneal dissemination of the ovarian carcinoid tumor were diagnosed...
  92. doi request reprint Endovascular management of ruptured pancreaticoduodenal artery aneurysms associated with celiac axis stenosis
    Kojiro Suzuki
    Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya 466 8550, Japan
    Cardiovasc Intervent Radiol 31:1082-7. 2008
    ..In conclusion, transcatheter arterial embolization for PDA aneurysms associated with CS is effective. Significant reduction of the flow to the aneurysm at final angiography may be predictive of future thrombosis...
  93. doi request reprint Individual differences in the permeability of the round window: evaluating the movement of intratympanic gadolinium into the inner ear
    Mayumi Yoshioka
    Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan
    Otol Neurotol 30:645-8. 2009
    ..We used magnetic resonance imaging (MRI) to evaluate whether and how intratympanically administered gadolinium (Gd) enters the inner ear...
  94. doi request reprint Image evaluation of endolymphatic space in fluctuating hearing loss without vertigo
    Masaaki Teranishi
    Department of Otorhinolaryngology, Graduate School of Medicine, Nagoya University, 65, Tsurumai cho, Showa Ku, Nagoya 466 8550, Japan
    Eur Arch Otorhinolaryngol 266:1871-7. 2009
    ..In conclusion, 3T MRI after intratympanic injection of Gd-DTPA revealed endolymphatic hydrops both in the cochlea and in the vestibule in the patients with fluctuating hearing loss without vertigo...
  95. doi request reprint Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging findings and prognosis in sudden sensorineural hearing loss
    Tadao Yoshida
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Laryngoscope 118:1433-7. 2008
    ..However, the relationship between 3D-FLAIR findings and hearing prognosis is unclear. Our objective was to evaluate the relationship between the results of 3D-FLAIR MRI at 3 Tesla and prognosis in sudden SNHL...
  96. ncbi request reprint Sudden sensorineural hearing loss associated with inner ear anomaly
    Makoto Sugiura
    Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan
    Otol Neurotol 26:241-6. 2005
    ..This study was conducted to evaluate the frequency of inner ear anomaly in patients with sudden sensorineural hearing loss and in control subjects...
  97. doi request reprint Changes in endolymphatic hydrops in a patient with Meniere's disease observed using magnetic resonance imaging
    Michihiko Sone
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Showa Ku, Nagoya, Japan
    Auris Nasus Larynx 37:220-2. 2010
    ..The correlation between the degree of endolymphatic hydrops observed by MRI and hearing level in patients with Meniere's disease offers a promising new method to study the progression of Meniere's disease...
  98. ncbi request reprint Disorders of cochlear blood flow
    Tsutomu Nakashima
    Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan
    Brain Res Brain Res Rev 43:17-28. 2003
    ..There have been many reports of hearing loss that were considered to be caused by blood flow disturbance in the cochlea. However, direct evidence of blood flow disturbance in the cochlea is still lacking in most of the cases...
  99. ncbi request reprint Visualization of endolymphatic hydrops in patients with Meniere's disease
    Tsutomu Nakashima
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Laryngoscope 117:415-20. 2007
    ..Intratympanic administration of steroids has also been used to treat sudden sensorineural hearing loss. We attempted to visualize how the intratympanically administered drug enters the inner ear...
  100. ncbi request reprint Cochlear modiolus and lateral semicircular canal in sudden deafness
    Ieda Maria Ishida
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine 65, Tsurumai cho, Showa Ku, Nagoya 466 8550, Japan
    Acta Otolaryngol 127:1157-61. 2007
    ..Reduced cochlear modiolus area and inner area of the lateral semicircular canal (LSCC) may be associated with insufficient maturation of the inner ear...
  101. ncbi request reprint Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging investigation of inner ear disturbances in cases of middle ear cholesteatoma with labyrinthine fistula
    Michihiko Sone
    Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
    Otol Neurotol 28:1029-33. 2007
    ..To investigate the cause of inner ear disturbances in cases of middle ear cholesteatoma with labyrinthine fistula...