The study of manual control respiratory rhythm trigger acquisition technology in improving image quality of MRCP
10.3969/j.issn.1002-1671.2014.07.036
- VernacularTitle:人工调节呼吸节律触发采集技术改善MRCP图像质量的研究
- Author:
Yeda WAN
;
Baojiu LI
;
Huaqi CAI
- Publication Type:Journal Article
- Keywords:
manual control;
respiratory rhythm;
magnetic resonance cholangiopancreatography;
image quality
- From:
Journal of Practical Radiology
2014;(7):1200-1202,1249
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the manual control respiratory rhythm trigger acquisition (MCRRTA)technology in improving image quality and shortening acquisition time of the low-field MRCP scan.Methods 40 patients underwent MRCP scans using both automatic respiratory rhythm trigger acquisition (ARRTA)and MCRRTA,and the acquisition time and image quality were also ana-lyzed.Results The acquisition time of MRCP using ARRTA and MCRRTA were 675.13 ± 35.89 s and 546.38 ± 30.61 s respec-tively,exhibiting significant differences using the paired sample t-test (t=13.85,P=0.000).In ARRTA group,the scores of the image quality were 4 in 11 cases (11/40,27.5%);3 in 18 cases (18/40,45.0%);2 in 10 cases (10/40,25.0%);and 1 in only 1 case (1/40,2.5%),respectively.In MCRRTA group,the scores of the image quality were 4 in 25 cases (25/40,65.5%);3 in 10 cases (10/40,25.0%);2 in 5 cases (5/40,12.5%);and no case with 1 score (0/40,0%),respectively.The differences in image quality between two groups were statistically significant using the wilcoxon rank sum test (Z=-3.036,P=0.002).Conclusion MCRRTA technology in low-field MRCP scans can improve significantly image quality and shorten examination time.
