Application value of slice encoding for metal artifact correction-view angle tilting in chronic pain after total hip arthroplasty
10.3969/j.issn.1002-1671.2024.10.030
- VernacularTitle:层面编码去金属伪影矫正-视角倾斜技术在全髋关节置换术后患者慢性疼痛中的应用价值
- Author:
Longquan HUANG
1
;
Meihai XU
;
Jieqin WEI
;
Yipu MAO
;
Wei SHEN
;
Pingming LU
;
Ai HE
;
Yangyang PAN
;
Dongmei FENG
Author Information
1. 南宁市第一人民医院放射科,广西 南宁 530022
- Keywords:
magnetic resonance imaging;
total hip arthroplasty;
metal artifacts;
slice encoding for metal artifact correction-view angle tilting
- From:
Journal of Practical Radiology
2024;40(10):1707-1711
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the application value of slice encoding for metal artifact correction-view angle tilting(SEMAC-VAT)in chronic hip pain after total hip arthroplasty(THA).Methods A total of 22 patients who underwent TH A and required MRI reassessment for chronic hip pain were enrolled.All patients underwent coronal and axial short time inversion recovery(STIR)and SEMAC-VAT sequence scans.The prosthesis and surrounding artifact areas of STIR sequence and SEMAC-VAT sequence images were measured respectively.Likert scores were assigned to evaluate prosthesis clarity and visibility of surrounding anatomical structures.The number of abnormal lesions detected was recorded.Paired t-test and rank-sum test were used for comparisons between groups.Results Among the 22 patients,the mean prosthesis and surrounding artifact areas measured in coronal and axial STIR sequences were(73.08±11.28)cm2 and(34.36±8.47)cm2,respectively.For SEMAC-VAT sequences,the corresponding values were(44.30±8.41)cm2 and(23.08±5.85)cm2,respectively.These differences were statistically significant(t=13.942,8.659,P＜0.05).SEMAC-VAT sequences had higher Likert scores on coronal and axial prosthesis clarity and surrounding anatomical structures visibility than STIR sequences(P＜0.05).Additionally,SEMAC-VAT sequences were more effective in detecting abnormal lesions than STIR sequences(P＜0.05).Conclusion Compared to STIR sequences,SEMAC-VAT sequences significantly reduce metal artifacts and enhance image quality in the assessment of chronic hip pain after THA.This technique is advantageous in detecting more positive signs,facilitating the evaluation of hip images in patients with chronic pain after TH A,and subsequently clarifying the etiology of pain.
