The influence of diffusion- and relaxation-related factors on signal intensity: An introductive guide to magnetic resonance diffusion-weighted Imaging studies

被引：47

作者：

Colagrande, Stefano ^{[1
]}

Belli, Giacomo ^{[2
]}

Politi, Letterio Salvatore ^{[3
]}

Mannelli, Lorenzo ^{[1
]}

Pasquinelli, Filippo ^{[1
]}

Villari, Natale ^{[1
]}

机构：

[1] Univ Careggi, Azienda Osped, Univ Studi Firenze, Dipartimento Fisiopatol Clin,Sez Radiodiagnost, I-50134 Florence, Italy

[2] Univ Careggi, Azienda Osped, Dept Med Phys, I-50134 Florence, Italy

[3] Ist Sci San Raffaele, Dept Neuroradiol, I-20132 Milan, Italy

来源：

JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY | 2008年 / 32卷 / 03期

关键词：

diffusion-weighted imaging; apparent diffusion coefficient; shine-through effect; pseudodiffusion; intravoxel incoherent motion; lack of mobile spin effect;

D O I：

10.1097/RCT.0b013e31811ec6d4

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 [临床医学]; 100207 [影像医学与核医学]; 1009 [特种医学];

摘要：

In magnetic resonance diffusion-weighted imaging, signal intensity is influenced simultaneously by temperature, diffusivity, b value, pseudodiffusion, macroscopic motion, and T2-weighted intensity value. The purpose of this pictorial essay is to discuss and exemplify the influence that such factors and the related modifications have on signal intensity. Apparent diffusion coefficient, shine-through and pseudodiffusion will also be examined to show how T2-weighted signal intensity value and nondiffusional intravoxel incoherent motion can affect the diffusion-weighted imaging.

引用

页码：463 / 474

页数：12

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