100% efficient motion corrected coronary MR angiography using a gradient echo sequence in a 3T PET-MR system

TY - CHAP

T1 - 100% efficient motion corrected coronary MR angiography using a gradient echo sequence in a 3T PET-MR system

AU - Munoz Escobar, Camila

AU - Neji, Radhouene

AU - Weale, Peter

AU - Botnar, Rene Michael

AU - Prieto, Claudia

PY - 2016

Y1 - 2016

N2 - Respiratory motion remains a challenge for coronary MR angiography at 3T. Here we propose an inline 2D translational motion correction scheme using an image-based navigator. Low-resolution navigators are acquired at each heartbeat by spatially encoding the start-up echoes of an ECG-gated gradient echo sequence, allowing for 100% scan efficiency. Results from healthy volunteers show that motion correction improves visualization of the right and left anterior descending coronary arteries. The proposed scheme potentially allows for performing a comprehensive diagnosis of coronary artery disease by acquiring both diagnostic and motion information from MR, that can also be used to correct PET data.

AB - Respiratory motion remains a challenge for coronary MR angiography at 3T. Here we propose an inline 2D translational motion correction scheme using an image-based navigator. Low-resolution navigators are acquired at each heartbeat by spatially encoding the start-up echoes of an ECG-gated gradient echo sequence, allowing for 100% scan efficiency. Results from healthy volunteers show that motion correction improves visualization of the right and left anterior descending coronary arteries. The proposed scheme potentially allows for performing a comprehensive diagnosis of coronary artery disease by acquiring both diagnostic and motion information from MR, that can also be used to correct PET data.

M3 - Conference paper

SP - 2204

BT - Proceedings of the 24th Annual Meeting of ISMRM, Singapore

PB - ISMRM

ER -