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Abstract #4719

Adaptive Trigger Delay Using a Predictive Model Applied to Black Blood Fast Spin Echo Cardiac Imaging in Systole

Brice Fernandez1,2, Julien Oster2,3, Maelene Lohezic1,2, Damien Mandry2,4, Olivier Pietquin2,5, Pierre-Andr Vuissoz2,3, Jacques Felblinger2,3

1Global Applied Science Lab., GE Healthcare, Nancy, France; 2IADI, Nancy-Universit, Nancy, France; 3U947, INSERM, Nancy, France; 4CHU de Nancy, Nancy, France; 5IMS Research Group, Supelec Metz Campus, Metz, France

Cardiac-gated Fast Spin Echo (FSE) sequences with black blood preparation provide detailed anatomical information to clinical cardiac MR applications. However, the black blood preparation time is too long to allow this acquisition scheme to run in systole, hence black blood FSE are usually performed in diastole. Overcoming this limitation requires to predict the R-R interval to launch the preparation properly and to handle instantaneous heart rate variability. This approach has been implemented and tested on four healthy volunteers, and compared with fixed trigger delay (TD). Results demonstrate accurate depiction of the myocardium at end-systolic phase in black blood.