- PDF 無料ダウンロード

Size: px

Start display at page:

Download ""

あきとしえいさか
7 years ago
Views:

1 水励起高速三次元拡散強調 MRIパルスシーケンスの開 Title 発とラット骨盤部への生体応用沼野, 智一, 本間, 一弘, 岩崎, 信明, 兵頭, 行志, Author(s) 新田, 尚隆 Citation 日本磁気共鳴医学会雑誌, 28(3): Issue Date URL DOI Rights Type Journal Article Textversion author 首都大学東京機関リポジトリ

28(3): 185-195 Issue Date 2008-07-15 URL http://hdl.handle.

14 1) Le BD, Breton E, Lallemand D, Grenier P, Cabanis E, Laval-Jeantet M: MR imaging of intravoxel incoherent motions: application to diffusion and perfusion in neurologic disorders. Radiology 1986;161: ) Moseley ME, Cohen Y, Mintorovitch J, Chileuitt L, Shimizu H, Kucharczyk J, Wendland MF, Weinstein PR: Early detection of regional cerebral ischemia in cats: comparison of diffusion- and T2-weighted MRI and spectroscopy. Magn Reson Med 1990;14: ) Dardzinski BJ, Sotak CH, Fisher M, Hasegawa Y, Li L, Minematsu K: Apparent diffusion coefficient mapping of experimental focal cerebral ischemia using diffusion-weighted echo-planar imaging. Magn Reson Med 1993;30: ) Nicholas GZ, Ponnada AN: Selective measurement of white matter and gray matter diffusion trace values in normal human brain. Med Phys 1998;25: ) Carlo P, Peter J, Peter JB, Alan B: Diffusion Tensor MR Imaging of Human Brain. Radiology 1996;201: ) Roland B, Martin A, Stephen L, Michael A, Lara AS, Rupert WP, Rudolf S, Michael EM, Franz F: Diffusion Tensor Imaging Using Single-Shot SENSE-EPI. Magn Reson Med 2002;48: ) Golay X, Jiang H, van Zijl PC, Mori S: High-resolution isotropic 3D diffusion tensor imaging of the human brain. Magn Reson Med 2002;47: ) Numano T, Homma K, Hirose T: Diffusion-weighted three-dimensional MP-RAGE MR imaging. Magn Reson Imaging 2005;23: ) Numano T, Homma K, Iwasaki N, Hyodo K, Nitta N, Hirose T: In vivo isotropic 3D diffusion tensor mapping of the rat brain using diffusion-weighted 3D MP-RAGE MRI. Magn Reson Imaging 2006;24: ) Haase A: Snapshot FLASH MRI. Applications to T1, T2, and chemical-shift imaging. Magn Reson Med

of diffusion- and T2-weighted MRI and spectroscopy.

15 1990;13: ) Takahara T, Imai Y, Yamashita T, Yasuda S, Nasu S, Van Cauteren M: Diffusion weighted whole body imaging with background body signal suppression (DWIBS): technical improvement using free breathing, STIR and high resolution 3D display. Radiat Med 2004;22: ) Clore GM, Kimber BJ, Gronenborn AM: The 1-1 hard pulse: A simple and effective method of water resonance suppression in FT 1H NMR. J Magn Reson 1983;54: ) Sklenar V, Starcuk Z: pulse train: A new effective method of selective excitation for proton NMR in water. J Magn Reson 1982;50: ) Meyer CH, Pauly JM, Macovski A, Nishimura DG: Simultaneous spatial and spectral selective excitation. Magn Reson Med 1990;15: ) Sakuma H, O'Sullivan M, Lucas J, et al: Effect of magnetic susceptibility contrast medium on myocardial signal intensity with fast gradient-recalled echo and spin-echo MR imaging: initial experience in humans. Radiology 1994;190: ) Mugler III JP, Spraggins TA, Brookeman JR: T2-weighted three-dimensional MP-RAGE MR imaging. J Magn Reson Imaging 1991;1: ) Lee H, Price RR: Diffusion imaging with the MP-RAGE sequence. J Magn Reson Imaging 1994;4: ) Epstein FH, Mugler JP 3rd, Cail WS, Brookeman JR: CSF-suppressed T2-weighted three-dimensional MP-RAGE MR imaging. J Magn Reson Imaging 1995;5: ) David LT, Gaby SP, Mark FL, David GG, Roger JO: A quantitative method for fast diffusion imaging using magnetization-prepared TurboFLASH. Magn Reson Med 1998;39:

Radiat Med 2004;22:275-282 13) Clore GM, Kimber BJ, Gronenborn AM: The 1-1 hard pulse: A simple and effective method of water resonance suppression in FT 1H NMR.

16 Fig.1 Vector representation of the magnetization behavior during a DEFT sequence. Fig.2 a: Diagram of the 3D MP-RAGE pulse sequence modified for diffusion imaging (3D-DWI). The FatSat-3D-DWl performs the area of a dashed line. b: The WE-3D-DWI is performed by choosing a binominal[1:1 or 1:2:1] pulse of RAGE sequence. Fig.3 Vector representation of the magnetization behavior during a binominal[1:2:1] pulse train. Fig.4 Phantom experiment results of different fat-saturation methods. A solid line is water phantom profile, and a dash line is oil phantom profile. Fig.5 Relation between the density of acetone and measured diffusion coefficient by 3D-DWI, FatSat-3D-DWI and WE-3D-DWI. Fig.6 a: T2-weighted FSE, 3D-DWI and WE-3D-DWI images of the rat pelvis. The fat tissue of WE-3D-DWI images was not displayed by fat-saturation (water-excitation) effect. b: 3D-DWI images obtained with b-value of 0, 1000 s/mm2 and the corresponding map of the calculated ADC-map of rat

3 Vector representation of the magnetization behavior during a binominal[1:2:1] pulse train. Fig.4 Phantom experiment results of different fat-saturation methods.

17 pelvis. c: WE-3D-DWI images obtained with b-value of 0, 1000 s/mm2 and the corresponding map of the calculated ADC-map of rat pelvis. Fig.7 a: Collected echo peaks (the first 32 echoes of shooting) versus RAGE-loop (only the readout gradient was applied) of the FatSat-3D-DWI and WE[1-2-1]3D-DWI. b: The contrast which becomes dominant with the acquisition ordering of k-space. An arrow indicates the order of the data with which it is filled up into k-space, and coloring indicates the image contrast that become dominant.

7 a: Collected echo peaks (the first 32 echoes of shooting) versus RAGE-loop (only the readout gradient was applied) of the

Title 本間久雄日記を読む (3) Author(s) 岡崎, 一 Citation 人文学報表象文化論 (461): 1-26 Issue Date 2012-03-30 URL http://hdl.handle.net/10748/5350 Rights

Title 本間久雄日記を読む (3) Author(s) 岡崎, 一 Citation 人文学報表象文化論 (461): 1-26 Issue Date 2012-03-30 URL http://hdl.handle.net/10748/5350 Rights Title 本間久雄日記を読む (3) Author(s) 岡崎, 一 Citation 人文学報表象文化論 (461): 1-26 Issue Date 2012-03-30 URL http://hdl.handle.net/10748/5350 DOI Rights Type Departmental Bulletin Paper Textversion publisher