Development of highly-precise tissue elasticity imaging using high-field tagging magnetic resonance imaging

标记磁共振成像（MRI）提供了一种高精度显示组织内部运动的非侵入性方法。本研究的目的是开发一种方法，用于生成内部软组织的弹性模量的地图，使用标签MRI。为了评估我们的方法的准确性，我们实际测量的压力和应变之间的关系，使用材料试验机，并与我们的方法得到的结果进行比较。我们还将这种方法应用于人类志愿者的肝脏和股骨图像。这些结果表明，我们的方法是有用的组织弹性成像。

Tagging magnetic resonance imaging(MRI) provides a noninvasive means of displaying the internal motion of tissues with high accuracy. The purpose of this study was to develop a method for generating the maps of elastic modulus in internal soft tissues using tagging MRI. To evaluate the accuracy of our method, we actually measured the relationship between the pressure and strain using a material testing machine and compared with the results obtained by our method. We also applied this method to the hepatic and femoral images of human volunteers. These results suggest that our method is useful for tissue elasticity imaging.