Introduction to Dynamic Effects and Intercomparison in the MR (Magnetic Resonance) Imaging Process: Four Short Reports on MRI Dynamical and Intercomparitive Phenomena

摘要

The report provides a brief history of early measurement methods for blood flow, using nuclear magnetic resonance, prior to successful implementation on magnetic resonance imaging (MRI) scanners in 1983; it gives also a description of principles and performance of a commercial blood flowmetry system using continuous-wave magnetic resonance and the flow-driven adiabatic passage phenomenon. For performance assessment of all MRI systems, the principles underlying all dynamic data acquisition behaviors are presented for an understanding of the concepts involved, and a contrast/detail assessment method, using a new kind of digitally analyzed phantom, is described.