Application of Artificial Intelligence Compressive Sensing Technology in MRI of the Ankle Joint
10.3969/j.issn.1005-5185.2024.11.013
- VernacularTitle:人工智能压缩感知技术在踝关节MRI中的应用
- Author:
Xuetao JIANG
1
,
2
;
Tianxin CHENG
;
Feifei LI
;
Ying YUAN
;
Lin JIANG
;
Jie WEI
;
Hui XU
Author Information
1. 首都医科大学附属北京友谊医院放射科,北京 100050
2. 遵义市第一人民医院(遵义医科大学第三附属医院)影像科,贵州 遵义56300
- Keywords:
Ankle joint;
Artificial intelligence;
Compressive sensing;
Magnetic resonance imaging;
Image quality
- From:
Chinese Journal of Medical Imaging
2024;32(11):1164-1169
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To explore the feasibility of artificial intelligence compressed sensing(ACS)technique in ankle joint MRI.Materials and Methods From September to October 2023,32 healthy volunteers who underwent ankle joint scanning in Beijing Friendship Hospital,Capital Medical University were prospectively collected.MRI of the ankle joint based on ACS and parallel imaging(PI)technology was performed on 3.0T MR.The sagittal proton density weighted imaging(PDWI),coronary PDWI,transverse PDWI and sagittal T1WI were acquired,and all data were divided into test group and control group,with ACS to accelerate the multiples of 5(ACS 5.0)in test group,whereas PI speed ratio of 2(PI 2.0)in control group,respectively.The signal intensity of talus,achilles tendon and cartilage were measured,the signal intensity and standard deviation of the long hallux flexor were obtained,and the signal noise ratio(SNR)and contrast to noise ratio(CNR)were calculated via long hallux flexor as background noise.The data of objective and subjective evaluation of the two sequences were statistically analyzed,and the image quality of each sequence was evaluated via the standard reference of PI 2.0.Results SNR and CNR in ACS group were higher than those in PI group,and the anatomical structure of sagittal PDWI sequence between the two groups had statistical significance(t=-2.937,-1.981,-4.058,-3.879,P<0.05).There were significant differences in cartilage SNR and talus CNR in coronal PDWI sequence(t=-3.310,-3.567;P=0.002,P<0.001).In terms of axial PDWI sequence,there were statistically significant differences in talus CNR and cartilage CNR between ACS and PI groups(t=-4.270,-4.382,P<0.05).The subjective evaluation of the image quality scores of the two groups by the two diagnostic imaging doctors showed a strong observer consistency(Kappa=0.977,P=0.009).There was no significant difference in image quality scores between the two groups(Z=-0.248,-0.747,<0.001,-0.071,P>0.05).The total collection time of ACS group and PI group was 337 s and 610 s,respectively.Compared with PI group,the total scanning time of ACS group was shortened by 44.8%.Conclusion ACS based MRI of the ankle joint can not only shorten the scan time,but also ensure and further improve the image quality,with feasibility.
