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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