Abstract：Objective To investigate the value of 3D magnetic resonance cholangiopancreatography (MRCP) combined with thinlayer
T2WI sequence in the diagnosis of lower common bile duct stones. Methods A total of 151 patients with possible lower
common bile duct stones between December 2019 and December 2021 in our hospital were selected as research subjects. All patients
underwent 3D MRCP, thin-layer T2WI sequence detection and endoscopic retrograde cholangiopancreatography (ERCP) treatment
after admission. Using ERCP treatment diagnosis or postoperative pathological results as the “gold standard”, the diagnostic value,
calculation sensitivity, specificity and accuracy of 3D MRCP and thin-layer T2WI sequences for lower common bile duct stones
were compared. Based on the gold standard results, the patients were grouped according to the size of stones. The detection rates
of different imaging methods for different sizes of stones were compared. Results There were no statistically differences in the
sensitivity, specificity and accuracy rate of 3D MRCP and thin-layer T2WI sequence in the diagnosis of lower common bile duct
stones (P＞0.05). The sensitivity, specificity and accuracy rate of 3D MRCP combined with thin-layer T2WI sequence
were higher than those of the two alone (P＜0.05). 3D MRCP examination of 151 patients showed that there were 49.67% of
patients with moderate-to-severe biliary dilation and 33.77% of patients with dilatation of common bile duct. The lower common
bile duct obstruction was mainly manifested by liquid bouldering (24.50%) and decreased signal reduction (9.27%). There were
no statistically significant differences in the detection rates of stones with d＞1 cm and stones with 5mm＜d≤1.0 cm by 3D
MRCP alone, thin-layer T2WI sequence alone and combined detection (P＞0.05), and the detection rate of combined
detection for stones with d≤5 mm was higher than that of the two methods alone (P＜0.05). Conclusion Based on 3D MRCP
combined with thin-layer T2WI sequence detection has higher diagnostic accuracy rate of lower common bile duct stones, and it is
more conducive to the detection of stones with d≤5 mm.
齐武a，梁丁保a，詹志敏a，黄俊b. 3D MRCP联合薄层T2WI序列诊断胆总管下段结石的价值分析[J]. 中国医疗设备, 2022, 37(9): 61-64.
QI Wua, LIANG Dingbaoa, ZHAN Zhimina, HUANG Junb. Value Analysis of 3D MRCP Combined with Thin-Layer T2WI Sequence in the Diagnosis of
Lower Common Bile Duct Stones. China Medical Devices, 2022, 37(9): 61-64.
