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Abstract #2619

KWIC-Filtered Cardiac T 2 Mapping for Improved Precision and Faster Acquisition

Emeline Lugand 1,2 , Jrme Yerly 1,2 , Hlne Feliciano 1,2 , Jrme Chaptinel 1,2 , Matthias Stuber 1,2 , and Ruud B van Heeswijk 1,2

1 Department of Radiology, University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland, 2 Center for Biomedical Imaging (CIBM), Lausanne, Switzerland

While cardiac T 2 mapping through radial gradient echo imaging is highly robust to motion, it also results in a relatively low signal-to-noise ratio (SNR) due to the undersampling of the k-space periphery and the resulting density compensation function (DCF), which increases the weight of the k-space periphery. An undersampled k-space-weighted image contrast (KWIC) filter that shares the k-space periphery between images was therefore implemented to improve precision and to shorten the acquisition time. The technique was tested on phantoms and was successfully validated in healthy volunteers.

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