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Abstract #2276

Investigation of multi-site reliability and reproducibility study of non-respiratory gated cardiovascular 4D flow MRI

Wen Chen1, Song Yang1, Qian Lu1, Lin Xu1, Yang Fan2, Yong Zhang3, and Changjie Pan3
1Radiology department, Hubei Shiyan Taihe Hospital, Shiyan, China, 2GE healthcare China, Beijing, China, 3Radiology department, Changzhou No2 people hospital, Changzhou, China

Respiratory gating or navigator technique is used in 4D flow imaging to reduce the effect of respiratory motion. Non-respiratory gated 4D flow MRI reduces the overall scan time but may face uncertainty in reproducibility and reliability. In this work, the reliability and reproducibility of non-respiratory gated 4D flow was investigated in 10 patients and 3 different sites in two separate scans. Better measurement consistency was observed intra-site than inter-site. The intra-correlation coefficient results showed excellent to good reproducibility between sites were observed ( ICC > 0.95 for blood flow, ICC > 0.85 for peak). Bland–Altman analysis also showed great test-retest reliability.

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