Multi-centre in vivo Evaluation of MR Phase Contrast Flow Measurements
Graves M, Maguire S, Abolmaali N, Markenroth K
University of Cambridge Hospitals NHS Foundation Trust
We report on a multi-centre, multi-vendor in vivo evaluation of cine phase contrast (CPC) flow mapping. We measured the Qp/Qs ratio in a cohort of 53 normal volunteers using non-segmented CPC sequences. Local and central site data analysis was performed, including inter and intra observer reproducibility. Each subject was also scanned three times to assess measurement repeatability. For the central site analysis the Qp/Qs ratio was 1.130.08. Intra subject repeatability was 0.09. There were no significant differences between local and central site analysis or between intra and inter observer measurements. Qp/Qs can be measured with acceptable accuracy for clinical applications.