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Abstract #1157

Accelerated Whole-Heart Coronary Imaging Using Multiple Breath-Holds and Compressed Sensing Monitored by Self-Navigation

Christoph Forman1, 2, Davide Piccini1, Jana Hutter1, 2, Robert Grimm1, Joachim Hornegger1, 3, Michael O. Zenge4

1Pattern Recognition Lab, University of Erlangen-Nuremberg, Erlangen, Germany; 2Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; 3Erlangen Graduate School in Advanced Optical Technologies (SAOT), , Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; 4MR Application & Workflow Development, Siemens AG, Healthcare Sector, Erlangen, Germany

Current research in whole-heart coronary MR imaging is driven by acceleration of scan time. On the one hand, self-navigation was introduced to improve the efficiency of conventional navigator-gated examinations. On the other hand, compressed sensing was proposed for acceleration of data acquisition. In this work, a novel incoherent Cartesian sampling pattern is used for imaging the coronary imaging in multiple breath-holds. Self-navigation properties are exploited for a real-time supervision the respiratory phase during breath-hold. In this way, misregistration of consecutive acquisitions could be avoided. The proposed method was compared with the navigator-gated approach in 4 volunteers.

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Keywords

accelerated acceleration acceptance according achieved acquisition acquisitions addition advanced application applied array artifacts authors avoid better breath breathing cardiac channel clinical coil combination combined comparable compressed computing consecutive consuming context coronary dataset datasets delays detected development directly driven effective elements encoding excellence extracted features featuring field framework free funding furthermore future gated gating gradient graduate greater grid hand hardware healthy heart hold holds illustrated in vivo incoherent incoherently independent individually initiative inspection inspiration integrated introduced investigation iterative lads matrix maximal measured moreover motion navigation navigator noise novel offset optical orientation parallel patients pattern prepared progress projection promised proofed properties proposed protocol quality radial radiology readouts real receiver recently recognition reconstructed reconstruction reduce reduced reduction reformatted regards regularized required requirement residual respect respiratory sampling scanner school sector segmenting selective self sense sensing series sharpness significantly since slice software spine spiral subjects successful superior supervision technologies threading triggering utilizing variation vessel volunteers weber whole window