Francisco CONTIJOCH,Walter R.T, WITSCHEY,Robert C. GORMAN,Yuchi HAN,Joseph H. GORMAN
申请号：
US15304176
公开号：
US20170035298A1
申请日:
2015.04.24
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A retrospective reconstruction method uses cardiac self-gating for patients with severe arrhythmias. Self-gated myocardial systolic and diastolic motion is determined from low-spatial and high-temporal resolution images and then the MRI-data-set is retrospectively reconstructed to obtain high quality images. The method uses undersampled image reconstruction to obtain the low-spatial and high-temporal resolution images, including those of different beat morphologies. Processing of these images is utilized to generate a cardiac phase signal. This signal allows for arrhythmia detection and cardiac phase sorting. The cardiac phase signal allows for detection of end-systolic and diastolic events which allows for improved sampling efficiency. In the case of frequent and severe arrhythmia, the method utilizes data from the normal and interrupted beats to improve sampling and image quality.
