Evaluation of NMR Imaging for Detection and Quantification of Obstructions in Vessels

Abstract

The sequences of radiofrequency and magnetic field gradients used to form NMR images are designed for a stationary object. Consequently, these sequences produce a different response when applied to moving blood. The changes in signal permit visualization of vessels and can be used to measure their open area. Specific relaxation time signatures of lesions may help in identifiying the nature of the obstructions.