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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