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Abstract #2204

Feasibility and Comparison Between Non-enhanced 2D and 3D Free-breathing Black-blood Techniques for Renal Arterial Wall Imaging

Zihan Ning1, Shuo Chen1, Hualu Han1, Huiyu Qiao1, Shasha Deng2, Dandan Yang1, Hao Sun3, and Xihai Zhao1
1Department of Biomedical Engineering, School of Medicine Tsinghua University, Beijing, China, 2Fujian Medical University Union Hospital, Fujian, China, 3Depaetment of Radiology, Peking Union Medical College Hospital, Beijing, China

We optimized non-enhanced 2D and 3D free-breathing black-blood imaging sequences and found excellent agreement in morphological measurements of renal artery (ICC: 0.85-0.95), and the CNR (p=0.17) and image quality score (p=0.60) were comparable between them. 2D imaging had higher SNR for lumen and wall visualization (all p<0.05) whereas 3D imaging had higher CNReff (5.37±1.91 vs. 0.87±0.51, p<0.01). Both sequences showed excellent inter-reader and scan-rescan repeatability (ICC: 0.77-0.99). We concluded that both 2D and 3D sequences are feasible for renal arterial wall imaging, particularly 2D provides high quality images whereas 3D sequence allows large-coverage and more efficient imaging.

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