Optimal selection of the subject-specific data acquisition window for coronary MRA
Bi X, Zuehlsdorff S, Chung Y, Li D
The selection of trigger delay time (TD) for coronary MRA requires substantial user interactions and experience. We propose to use a motion curve calculated from biplane cine scans to identify the subject-specific time window. The method provides an objective way to identify the TD with minimal user dependency. The results from healthy volunteers showed that the optimal timing for coronary MRA could be predicted by the motion curve. The need for visual assessment of images is eliminated. Implementation of online processing software for the cines will allow automatic generation of the motion curve and determination of optimal TD.