Study on the examination time of MR cholangiopancreatography after Gd-BOPTA enhancement
10.3969/j.issn.1002-1671.2024.09.033
- VernacularTitle:钆贝葡胺增强后MR胰胆管成像检查时间的探讨
- Author:
Zidong ZHANG
1
;
Peicai CAO
;
Hongquan ZHAO
;
Wei CUI
Author Information
1. 烟台业达医院影像科,山东 烟台 264006
- Keywords:
Gd-BOPTA;
magnetic resonance cholangiopancreatography;
interval time;
image quality
- From:
Journal of Practical Radiology
2024;40(9):1541-1544
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of magnetic resonance cholangiopancreatography(MRCP)after Gd-BOPTA enhancement to clearly show the pancreaticobiliary duct,and to explore the reasonable time of MRCP examination after enhance-ment.Methods The quality of MRCP images in 124 patients after Gd-BOPTA enhancement was retrospectively evaluated by two physicians.The interval time of MRCP examination from the beginning of arterial phase to MRCP acquisition was obtained from pic-ture archiving and communication system(PACS),and the relationship between the image quality grade of pancreaticobiliary duct and the interval time was analyzed by ANOVA.Then the reasonable examination time of MRCP was calculated.Results After Gd-BOPTA enhancement,there was a significant difference in the interval time between different grades of intrahepatic and extrahepatic bile ducts on MRCP images(P＜0.05).The image quality of bile duct decreased with the increasing interval time,however,there was no sig-nificant difference in the interval time between different grades of pancreatic duct(P＞0.05).The mean interval time of clear grade of intra-hepatic bile duct was(9.9±3.1)min,and the 95％confidence interval(CI)was 9.2-10.6 min.Conclusion The clarity of the bile ducts on MRCP is gradually decreased after Gd-BOPTA enhancement,while no change in that of the pancreatic duct.The MRCP examination should be completed within 10.6 min after the arterial phase beginning,which is of great significance for controlling image quality.
