PURPOSE To compare image quality and diagnostic performance of three magnetic resonance cholangiopancreatography (MRCP) protocols in patients with suspected pancreatic abnormalities: free-breathing standard 3D-MRCP (STD), free-breathing compressed sensing 3D-MRCP (CS), and CS 3D-MRCP with acquisition during a single breath-hold > 20 s (BH-CS). METHODS Informed consent was obtained. We performed 57 MRCPs in 56 prospectively included patients (29 men, median age 59 years). The three protocols were performed in random order. Acquisition time was recorded. Two radiologists blinded to the protocols used 5-point scales to assess image quality parameters (overall image quality, amount of artifacts, background suppression, bile and pancreatic duct visualization) and diagnostic performance (anatomical variants, duct abnormalities, cystic lesions). RESULTS Acquisition time was 279 s with STD, 176 s with CS (-37%), and 22 s with BH-CS (-93%). STD and BH-CS were not significantly different for overall image quality, artifacts, or background suppression. The BH-CS group had fewer non-diagnostic scans (3% vs. 19% with STD and 21% with CS, p < 0.05), higher-quality scans (78% vs. 66% with STD and 58% with CS, p < 0.05), and milder artifacts (2% vs. 18% with STD and 16% with CS, p < 0.05). The main pancreatic duct was better visualized with BH-CS compared to STD (p = 0.015) and CS (p < 0.001). Diagnostic performance did not differ across the three protocols. There were fewer indeterminate scans in the BH-CS group. CONCLUSION 3T BH-CS is reliable, saves time, and is not associated with decreases in image quality or diagnostic performance compared to STD and CS.

中文翻译：

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与自由呼吸的3D MR胰胆管造影相比，屏气压缩的3D MR胰胆管造影：对胰腺疾病的图像质量和诊断性能的前瞻性研究。

目的比较可疑胰腺异常患者的三种磁共振胆胰胰管成像（MRCP）方案的图像质量和诊断性能：自由呼吸标准3D-MRCP（STD），自由呼吸压缩感测3D-MRCP（CS）和CS 3D -MRCP，单次屏气时间> 20 s（BH-CS）。方法获得知情同意。我们对56位预期纳入的患者（29位男性，中位年龄59岁）进行了57次MRCP。这三个协议以随机顺序执行。记录采集时间。两名放射科医生对方案不了解，使用5分制标度来评估图像质量参数（总体图像质量，伪影数量，背景抑制，胆汁和胰管可视化）和诊断性能（解剖学变异，导管异常，囊性病变）。结果STD采集时间为279 s，CS采集时间为176 s（-37％），BH-CS采集时间为-22％（-93％）。STD和BH-CS在整体图像质量，伪影或背景抑制方面无显着差异。BH-CS组的非诊断扫描较少（3％vs. STD为19％，CS为21％，p <0.05），更高质量的扫描（78％vs. STD为66％，CS为58％， p <0.05）和较轻的伪影（2％，而STD为18％，CS为16％，p <0.05）。与STD（p = 0.015）和CS（p <0.001）相比，BH-CS可以更好地显示主胰管。三种协议的诊断性能没有差异。BH-CS组的不确定扫描较少。结论与STD和CS相比，3T BH-CS可靠，节省时间并且与图像质量或诊断性能下降无关。