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Abstract #3922

Inter-rater and Intra-rater Reliability of cineFSE Carotid Measurements

Mari Elyse Boesen 1,2 , Alexandra Pulwicki 2,3 , Luis Alberto Souto Maior 2,4 , Jerome Yerly 2,5 , Robert Marc Lebel 2,6 , and Richard Frayne 2,7

1 Biomedical Engineering, University of Calgary, Calgary, AB, Canada, 2 Seaman Family MR Research Centre, Calgary, AB, Canada, 3 Physics & Astronomy, University of Calgary, AB, Canada, 4 Universidade Federal de Campina Grande, PB, Brazil, 5 CardioVascular MR Research Center, Centre d'Imagerie BioMedicale, Lausanne, Switzerland, 6 Applied Sciences Laboratory, GE Healthcare, AB, Canada, 7 Radiology & Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, AB, Canada

The inter-rater and intra-rater reliability of three cardiac gated carotid imaging techniques (cineFSE, prospectively gated FSE, and cineGRE) were determined by comparison of repeated manual tracings of common carotid area in ten healthy subjects. All sequences reflected highly repeatable manual measures (inter-rater ICC ≥ 0.85 in all cases). Minimum detectable difference (MDD) was calculated for each sequence to determine its ability to characterize changes in carotid distension. The cineFSE images produced the lowest MDD (5.8 mm 2 ) compared to prospective FSE (7.4 mm 2 ) and cineGRE (7.8 mm 2 ). Additionally, the scan-rescan reliability of the cineFSE technique was assessed.

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