Department of Urology, Peking University First Hospital, Institute of Urology, National Urological Cancer Center, Beijing, China.
Department of Radiology, Peking University First Hospital, Beijing, China.
Diagn Interv Radiol. 2023 Jan 31;29(1):1-8. doi: 10.5152/dir.2022.21418. Epub 2023 Jan 17.
To evaluate the feasibility and usefulness of cine magnetic resonance urography (cine MRU) as a novel postoperative examination after upper urinary tract reconstruction surgery.
Ninety-six patients underwent cine MRU for postoperative evaluation between August 2015 and August 2020. The morphological observations included regular peristalsis, anastomosis, urine flow signals, and reflux. The quantitative evaluations included luminal diameter, peristaltic amplitude, contraction ratio, peristaltic waves, and ureteric jets. The surgical outcomes were classified as success, gray area, or failure by combining the results of cine MRU, symptoms, and the degree of hydronephrosis.
There was no obvious stenosis of the anastomosis in 83 patients (86.46%). Regular peristalsis of the ureter and signals of urination was observed in 85 (88.54%) and 84 patients (87.50%), respectively. In addition, three patients (3.13%) showed urine reflux. The patients in both the success group and the gray area group showed significantly different creatinine levels (success 86.2 ± 22.3 μmol/L vs. failure 110.7 ± 8.2 μmol/L, = 0.016; gray area 81.0 ± 20.0 μmol/L vs. failure 110.7 ± 8.2 μmol/L, = 0.009) and estimated glomerular filtration rate (success: 88.5 ± 23.1 mL/min·1.73 m, failure: 61.6 ± 14.1 mL/min·1.73 m, = 0.014; gray area: 94.7 ± 24.6 mL/min·1.73 m, failure: 61.6 ± 14.1 mL/min·1.73 m, = 0.007) compared to those in the failure group. The ipsilateral split renal function was 33.6 ± 15.0, 24.5 ± 13.4, and 20.1 ± 0.4 mL/min in the success, gray area, and failure groups, respectively ( = 0.354).
Cine MRU demonstrates the morphology and function of the reconstructed upper urinary tract. The results of cine MRU can be used to evaluate the surgical effect, providing guidance for further treatment.
评估电影磁共振尿路成像（cine MRU）作为上尿路重建术后新型术后检查的可行性和实用性。
2015 年 8 月至 2020 年 8 月，96 例患者接受 cine MRU 术后评估。形态学观察包括规则蠕动、吻合口、尿流信号和反流。定量评估包括管腔直径、蠕动幅度、收缩比、蠕动波和输尿管射流。通过结合 cine MRU、症状和肾积水程度将手术结果分为成功、灰色区域或失败。
83 例患者（86.46%）吻合口无明显狭窄。85 例（88.54%）和 84 例（87.50%）患者分别观察到输尿管规则蠕动和排尿信号。此外，有 3 例（3.13%）患者出现尿反流。成功组和灰色区域组患者的血肌酐水平（成功组 86.2 ± 22.3 μmol/L 与失败组 110.7 ± 8.2 μmol/L，= 0.016；灰色区域组 81.0 ± 20.0 μmol/L 与失败组 110.7 ± 8.2 μmol/L，= 0.009）和估算肾小球滤过率（成功组：88.5 ± 23.1 mL/min·1.73 m，失败组：61.6 ± 14.1 mL/min·1.73 m，= 0.014；灰色区域组：94.7 ± 24.6 mL/min·1.73 m，失败组：61.6 ± 14.1 mL/min·1.73 m，= 0.007）与失败组相比有显著差异。成功组、灰色区域组和失败组的同侧分肾功能分别为 33.6 ± 15.0、24.5 ± 13.4 和 20.1 ± 0.4 mL/min（= 0.354）。
电影磁共振尿路成像显示了重建上尿路的形态和功能。电影磁共振尿路成像的结果可用于评估手术效果，为进一步治疗提供指导。
