DSpace About DSpace Software 日本語

01 奈良県立医科大学 >
012 大学院 >
0122 学位請求論文 >
01221 博士論文(医学) >
2013年度 >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/2638

Title: Application of susceptibility weighted imaging (SWI) for evaluation of draining veins of arteriovenous malformation: utility of magnitude images.
Authors: Miyasaka, Toshiteru
Taoka, Toshiaki
Nakagawa, Hiroyuki
Wada, Takeshi
Takayama, Katsutoshi
Myochin, Kaoru
Sakamoto, Masahiko
Ochi, Tomoko
Akashi, Toshiaki
Kichikawa, Kimihiko
Keywords: Susceptibility weighted image
Magnitude image
Arteriovenous malformation
Magnetic resonance imaging
Issue Date: 1-Nov-2012
Publisher: Springer-Verlag
Citation: Neuroradiology Vol.54 No.11 p.1221-1227
Abstract: INTRODUCTION: The current study evaluated the signal characteristics of susceptibility weighted imaging (SWI) of arteriovenous malformation (AVM), especially for draining veins. For this purpose, we identified the draining veins of the AVM on angiography and evaluated the signal on magnitude image for SWI (SWI-mag) and minimum intensity projection image (SWI-minIP). METHODS: Subjects were 14 cases with angiographically proven AVM. SWI-mag, SWI-minIP, and time-of-flight (TOF) magnetic resonance angiography were acquired. For the draining veins of the AVM identified on angiography, we analyzed signal intensity on the images listed above, and classified it into hyperintensity (hyper), mixed intensity (mixed), hypointensity (hypo), and no visualization. RESULTS: On the analysis of 27 angiographically proven draining veins, 19 draining veins were classified as hyper, 3 as mixed, 0 as hypo, and 6 as no visualization on SWI-mag. On TOF images, 21 draining veins were classified as hyper, 2 as mixed, 0 as hypo, and 4 as no visualization, while 6 draining veins did not show hyperintensity on TOF, and SWI-mag visualized 3 of these 6 veins as hyper. CONCLUSION: SWI-mag depicted most draining veins of AVM as hyperintensity. We speculate that this is mainly due to the higher concentration of oxygenated hemoglobin (oxy-Hb) and inflow effect of the draining vein. SWI-mag seems to be useful in the analysis and follow-up for AVM as the signal on the image may reflect physiological status.
Description: 博士(医学)・乙第1316号・平成25年7月22日
URI: http://hdl.handle.net/10564/2638
ISSN: 00283940
DOI: http://dx.doi.org/10.1007/s00234-012-1029-5
Academic Degrees and number: 24601B1316
Degree-granting date: 2013-07-22
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2013年度

Files in This Item:

File Description SizeFormat
01本文の要旨.pdf本文の要旨148.65 kBAdobe PDFView/Open
02審査要旨.pdf審査要旨373.06 kBAdobe PDFView/Open
03本文.pdf本文580.61 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback