@InProceedings{Supelec498,
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.}
}