author = {Maélène Lohezic and Brice Fernandez and Julien Oster and Damien Mandry and Olivier Pietquin and Pierre-André Vuissoz and Jacques Felblinger},
title = {Free breathing black-blood systolic imaging using heart rate prediction and motion compensated reconstruction},
year = {2009},
booktitle = {Proceedings of the 17th meeting of the International Society for Magnetic Resonance Medicine (ISMRM 2009)},
pages = {4629},
month = {April},
address = {Honolulu (Hawaii, USA)},
abstract = {Double Inversion Recovery Fast Spin Echo (DIR-FSE) sequences, resulting in black-blood images, are widespread in cardiac exams [1] as high resolution and great contrast between heart cavities and walls are achieved. For these sequences, DIR pulses are generally played on the R wave and the inversion time (TI) needed to cancel blood signal (~500ms) only allows diastolic view of the heart. Cardiac contraction is complete at end systole so myocardium can be better observed during this short phase. To perform systolic acquisitions, DIR pulses have to be placed before the R wave in the previous heart cycle and RR interval prediction is mandatory. Moreover, as systole is generally shorter than diastole, shorter echo trains are desirable, resulting in longer acquisition time incompatible with breath hold. A method which combines (i) heart rate prediction [2], (ii) respiratory motion estimation [3] and (iii )motion compensated reconstruction [4] is presented. It allows free breathing black-blood systolic imaging and has been tested on five subjects.}