Vilgrain V, Daire J-L, Sinkus R, Van Beers B E
Université Paris 7 Denis Diderot, Paris, 75018, France.
J Radiol. 2010 Mar;91(3 Pt 2):381-90; quiz 391-3. doi: 10.1016/s0221-0363(10)70054-8.
Diffusion-weighted imaging studies the motion of water molecules within a given tissue. Initially used for neuroradiological applications, it is now routinely used for abdominal imaging, especially liver imaging. The diffusion pulse sequence is a T2 echo-planar sequence where diffusion gradients are applied. In this article, we will review the sequence itself and the parameters used to optimize the sequence, quantitative and qualitative image evaluation, and the main applications for liver imaging: characterization of focal lesions, detection of focal lesions, evaluation of response to therapy and quantification of liver fibrosis.
扩散加权成像研究给定组织内水分子的运动。它最初用于神经放射学应用，现在常用于腹部成像，尤其是肝脏成像。扩散脉冲序列是一种应用了扩散梯度的T2回波平面序列。在本文中，我们将回顾该序列本身以及用于优化该序列的参数、图像的定量和定性评估，以及肝脏成像的主要应用：局灶性病变的特征描述、局灶性病变的检测、治疗反应评估和肝纤维化定量。
