The application of enhanced single breath-hold 3D SPACE sequence in MR cholangiopancreatography
10.3969/j.issn.1002-1671.2024.11.033
- VernacularTitle:增强后单次屏气3D SPACE序列MR胰胆管成像技术的应用研究
- Author:
Yong PENG
1
;
Bin LONG
;
Lin ZHANG
;
Long YIN
;
Di TIAN
;
Peng DENG
;
Hongfen PENG
;
Wei ZHANG
;
Dongyou ZHANG
Author Information
1. 武汉市第一医院放射科,湖北 武汉 430022
- Keywords:
magnetic resonance cholangiopancreatography;
three-dimensional variable reversal angle fast spin-echo;
image quality
- From:
Journal of Practical Radiology
2024;40(11):1901-1904
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of enhanced three-dimensional variable reversal angle fast spin-echo single breath-hold magnetic resonance cholangiopancreatography(3D SPACE BH MRCP)with high parallel acquisition factor on image quality.Methods A total of 33 patients with clinically suspected pancreatobiliary duct disease who underwent epigastric enhancement and magnetic resonance cholangiopancreatography(MRCP)examination were prospectively collected.All patients were required to acquire a single 3D SPACE BH MRCP before and after enhancement.The signal intensity of the common bile duct and background,signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR),and subjective scores of 3D SPACE BH MRCP before and after enhancement were recor-ded.Statistical analyses were performed using the Wilcoxon signed-rank sum test,and the Kappa test was used to assess the consis-tency of scores between the two readers.Results The difference in the common bile duct signals of 3D SPACE BH MRCP before and after enhancement was not statistically significant(Z=-1.215,P=0.224),however the background signal was decreased after enhancement with a significant difference(Z=-3.878,P＜0.001).The SNR and CNR of the images were better than those of 3D SPACE BH MRCP before enhancement(Z=-4.458,P＜0.001;Z=-4.583,P＜0.001).The subjective score of 3D SPACE BH MRCP after enhancement was better than that before enhancement,and the difference was statistically significant(Z=-2.646,P=0.008).There was a strong inter-reader agreement before and after enhancement 3D SPACE BH MRCP scores(Kappa=0.70,P＜0.01 and Kappa=0.73,P＜0.01).Conclusion The enhanced 3D SPACE BH MRCP between portal vein phase and equilibrium phase dose not affect the display of pancreaticobiliary duct,and can effectively suppress the background signal and improve the image quality of MRCP.
