MR imaging of synchronous spin motion and strain waves

摘要

A scan using an NMR imaging system is carried out while applying an oscillating stress (319) to the object being imaged. An alternating magnetic field gradient (315) synchronized with the applied stress (319) is employed in the NMR imaging pulse sequence (A) to detect and measure synchronous spin motion (309A) throughout the field of view. The direction of the alternating gradient (315) and/or the applied stress (319) may be changed to measure and image the elastic properties of the object.