High-frequency ultrasound and shear wave elastography parameters of lower extremity muscles for evaluating dermatomyositis
10.13929/j.issn.1672-8475.2024.06.008
- VernacularTitle:基于下肢肌肉高频超声及剪切波弹性成像参数评估皮肌炎
- Author:
Wenhui ZHANG
1
;
Ying SHI
;
Yanqin GUO
;
Jing YU
Author Information
1. 山西医科大学医学影像学院,山西 太原 030001
- Keywords:
dermatomyositis;
ultrasonography;
prospective studies
- From:
Chinese Journal of Interventional Imaging and Therapy
2024;21(6):349-353
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of high-frequency ultrasound(HFUS)and shear wave elastography(SWE)parameters of lower extremity muscles for evaluating dermatomyositis(DM).Methods Totally 19 DM patients(DM group)and 20 healthy subjects(control group)were prospectively enrolled,and lower extremity muscles HFUS and SWE examinations were performed.The echoes,thickness and shear wave velocity(SWV)of bilateral vastus lateralis and lateral head of gastrocnemius were compared between groups.Receiver operating characteristic curves were drawn,and the area under the curves(AUC)were calculated to evaluate the efficacy of each ultrasonic parameter for evaluating DM.Results The proportion of muscle echo score of 1-point,thickness of bilateral lateral head of gastrocnemius,SWV of bilateral vastus lateralis and lateral head of gastrocnemius in DM group were all lower than those in control group(all P＜0.05).SWV of bilateral vastus lateralis and left lateral head of gastrocnemius had excellent efficacies for evaluating DM(AUC 0.932-0.968).The thickness of bilateral lateral head of gastrocnemius and SWV of right lateral head of gastrocnemius had good efficacy for evaluating DM(AUC 0.784-0.884),while the muscles'echo had general efficacy(AUC=0.658).Conclusion HFUS and SWE parameters of lower extremity muscles could be used to evaluate DM,among which SWE parameters had relatively higher values.
