Automatic Detection of Quality Control Performance of Radio Frequency Coils Based on ACR Phantom
10.3969/j.issn.1005-5185.2025.06.006
- VernacularTitle:基于ACR模体的磁共振射频线圈质控性能指标自动检测
- Author:
Yawen LIU
1
;
Hongxia YIN
;
Yu ZHANG
;
Pengling REN
;
Yanjun HU
;
Hui XU
;
Zhenghan YANG
;
Zhenchang WANG
Author Information
1. 首都医科大学附属北京友谊医院放射科,北京 100050;北京市临床医学研究所精准与智慧影像实验室,北京 100050
- Publication Type:Journal Article
- Keywords:
Magnetic resonance imaging;
Quality control;
Radio frequency coils;
Automatic detection
- From:
Chinese Journal of Medical Imaging
2025;33(6):601-606
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To explore an automatic detection method for quality control performance indicators of radio frequency coils based on American College of Radiology(ACR)phantom,and verify its accuracy stability and computational efficiency.Materials and Methods A retrospective study was conducted on 50 quality control images collected based on ACR phantom in Beijing Friendship Hospital,Capital Medical University from May 2017 to July 2019.The measurement and calculation methods of signal noise ratio(SNR),percent image uniformity(PIU)and percent signal ghosting(PSG)were used to automatically calculate the above indicators using a self-designed program in Python.A simple linear regression analysis on the automatically calculated SNR,PSG and PIU values compared to the manually measured results was performed,and Bland-Altman analysis was used to calculate the percentage difference to evaluate the consistency and bias between the performance indicators calculated by the two methods.The time consumption of two detection methods was compared to verify their computational complexity and efficiency.Results There was a strong correlation between the performance indicators SNR,PSG and PIU of radio frequency coils measured and calculated automatically and manually(r=0.991 4,0.992 8 and 0.909 8,all P<0.0001).The Bland-Altman results showed that most of the data fall within the 95%confidence interval and were evenly distributed.In terms of computational complexity and efficiency,compared to the complex manual delineation and calculation of 2-3 minutes per case,automatic detection could simultaneously obtain SNR,PSG and PIU values in less than 1 second.Conclusion The automatic and manual measurement methods have good consistency,and the automatic detection method is easy to operate,which is helpful for the daily quality control work and performance monitoring of radio frequency coils.
