Comparison on three-dimensional MR cholangiopancreatography with breath-hold gradient-spin echo and respiratory gated triggering turbo-spin echo
10.13929/j.issn.1003-3289.2020.08.027
- VernacularTitle: 对比分析屏气三维梯度-自旋回波与呼吸门控触发三维快速自旋回波MR胰胆管成像
- Author:
Zhimin WEI
1
Author Information
1. Department of Radiology, The First Affiliated Hospital of Xiamen University
- Publication Type:Journal Article
- Keywords:
Cholangiopancreatography, magnetic resonance;
Gradient-spin echo sequence;
Quality control;
Turbo-spin echo sequence
- From:
Chinese Journal of Medical Imaging Technology
2020;36(8):1234-1238
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To compare the image quality of three-dimensional MR cholangiopancreatography with breath-hold gradient-spin echo (3D-Grase-MRCP) and respiratory gated triggering turbo-spin echo (3D-Tse-MRCP). Methods: Totally 96 patients with suspicious pancreatic or biliary tract diseases underwent 3D-Grase-MRCP and 3D-Tse-MRCP scanning. The image quality scores, lesion display and contrast noise ratio (CNR)of the common bile duct were compared and analyzed between 3D-Grase-MRCP and 3D-Tse-MRC. The 3D-Grase-MRCP images were divided into hold-breath group and poor hold-breath group, and the image quality scores were compared between 2 groups. Results: CNR of common bile duct on 3D-Tse-MRCP images (357.08 [209.73, 594.38]) were higher than that on 3D-Grase-MRCP (256.14 [141.54, 417.87],Z=-3.01, P<0.05). The imaging scores on 3D-Grase-MRCP of the gallbladder, ductus cysticus, common bile duct and intrahepatic bile duct were higher than those on 3D-Tse-MRCP (all P<0.01). 3D-Grase-MRCP showed gallstones (n=42) and cystic duct stones (n=7) more clearly than 3D-Tse-MRCP (both P<0.05). Imaging scores of gallbladder, ductus cysticus, common bile duct, pancreatic duct and intrahepatic bile duct on 3D-Grase-MRCP in hold-breath group (n=68) were higher than those in poor hold-breath group (n=28) (all P<0.01). Conclusion: The imaging quality and lesion display of breath-hold 3D-Grase-MRCP sequence are superior to those of respiratory gated triggering 3D-Tse-MRCP sequence with significantly shortened scanning time, which is expected to be used as a new method for MRCP.
