| 影响磁共振弥散加权成像信号的因素 |
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| 引用本文： | 康建蕴,伍建林. 影响磁共振弥散加权成像信号的因素[J]. 大连医科大学学报, 2004, 26(2): 152-154 |
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| 作者姓名： | 康建蕴 伍建林 |
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| 作者单位： | 大连医科大学,第一临床学院,放射科,辽宁,大连,116011;大连医科大学,第一临床学院,放射科,辽宁,大连,116011 |
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| 摘 要： | 磁共振弥散加权成像 (DWI)反映了水分子的微观弥散运动 ,是从细胞及分子水平来进行疾病研究的新技术 ;其成像原理及影响因素较复杂。对b值 (即弥散敏感因子 )、表观弥散系数 (ADC)、各向异性、T2 穿透效应及伪影等影响因素分别加以阐述 ,有助于对弥散成像信号的理解
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| 关 键 词： | 磁共振 弥散加权成像 影响因素 |
| 文章编号： | 1671-7295(2004)02-0152-03 |
| 修稿时间： | 2003-08-25 |
Influencing factors of MR diffusion-weighted signal |
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| KANG Jian-yun and WU Jian-lin. Influencing factors of MR diffusion-weighted signal[J]. Journal of Dalian Medical University, 2004, 26(2): 152-154 |
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| Authors: | KANG Jian-yun and WU Jian-lin |
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| Affiliation: | Department of Radiology,the First Clinical College of Dalian Medical University ,Dalian 116011,China;Department of Radiology,the First Clinical College of Dalian Medical University ,Dalian 116011,China |
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| Abstract: | MR diffusion-weighted imaging(DWI) reflects the microscopic Brownian motion of water molecules. It is a new technology for disease research from the cellular and molecular level. And the imaging principles and influencing factors are complex. The authors discussed the influencing factors such as b values, apparent diffusion coefficient (ADC),anisotropy,T2 shine-through effect and artifacts, which is helpful for understanding of DWI signal. |
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| Keywords: | MR Diffusion-weighted imaging influence factors |
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