Fredrickson J O, Pelc N J
Department of Radiology, Richard M. Lucas Center for Magnetic Resonance Spectroscopy and Imaging, Stanford University, CA 94305-5488.
J Magn Reson Imaging. 1994 Mar-Apr;4(2):189-96. doi: 10.1002/jmri.1880040217.
A method for time-resolved imaging that provides a flexible trade-off between imaging time and temporal resolution is presented. It is based on a view order selection technique that automatically segments the acquired raw data into appropriate temporal frames. When used with cardiac monitoring and phase-contrast imaging, data similar to that obtained with a conventional gated phase-contrast sequence are acquired rapidly. For many applications, the temporal resolution can be reduced enough to permit imaging within a breath-hold interval, while still allowing accurate time-averaged flow quantitation. This is a general technique that can be implemented within a variety of pulse sequences and can resolve other motion cycles, including the respiratory cycle.
提出了一种时间分辨成像方法，该方法在成像时间和时间分辨率之间提供了灵活的权衡。它基于一种视图顺序选择技术，该技术可自动将采集到的原始数据分割成适当的时间帧。当与心脏监测和相位对比成像一起使用时，可快速采集到与传统门控相位对比序列获得的数据相似的数据。对于许多应用，时间分辨率可以降低到足以在屏气间隔内进行成像，同时仍能进行准确的时间平均流量定量。这是一种通用技术，可以在各种脉冲序列中实现，并可以解析其他运动周期，包括呼吸周期。
