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  

Application value of slice encoding for metal artifact correction-view angle tilting in chronic pain after total hip arthroplasty

作　　者：黄龙全[1] 许梅海[1] 韦洁勤 毛一朴 申炜[1] 卢平明 贺艾 潘洋洋[1] 冯冬梅[1] HUANG Longquan;XU Meihai;WEI Jieqin;MAO Yipu;SHEN Wei;LU Pingming;HE Ai;PAN Yangyang;FENG Dongmei(Department of Radiology,the First People’s Hospital of Nanning,Nanning 530022,China)

机构地区：[1]南宁市第一人民医院放射科,广西南宁530022

出　　处：《实用放射学杂志》2024年第10期1707-1711,共5页Journal of Practical Radiology

基　　金：广西壮族自治区卫生健康委员会自筹经费科研课题(Z-A20221110,Z20200046);广西壮族自治区中医药管理局自筹经费科研课题(GXZYA20220352)。

摘　　要：目的探讨层面编码去金属伪影矫正-视角倾斜(SEMAC-VAT)技术在全髋关节置换术(THA)后慢性髋关节疼痛中的应用价值。方法选取行THA后慢性髋关节疼痛需MRI复查的22例患者。所有患者均行冠状面、横断面的短时反转恢复(STIR)序列及SEMAC-VAT序列扫描。分别测量STIR序列与SEMAC-VAT序列图像的假体及周围伪影面积,对假体清晰度、周围解剖结构可见度进行Likert量表评分,记录异常病变的发现数目。采用配对t检验、秩和检验进行组间比较。结果22例患者中,冠状面及横断面STIR序列图像的假体和周围伪影面积分别为(73.08±11.28)cm^(2)、(34.36±8.47)cm^(2);SEMAC-VAT序列图像分别为(44.30±8.41)cm^(2)、(23.08±5.85)cm^(2),差异均有统计学意义(t=13.942、8.659,P<0.05)。SEMAC-VAT序列对冠状面、横断面假体清晰度和周围解剖结构可见度的评分均高于STIR序列(P<0.05)。SEMAC-VAT序列较STIR序列更有助于异常病变的检出(P<0.05)。结论相较于STIR序列,SEMAC-VAT序列可显著减轻THA后的金属伪影,改善图像质量,能发现更多的阳性征象,利于THA后有慢性疼痛患者髋关节图像的评估,进而明确疼痛病因。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 THA 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)cm^(2) and(34.36±8.47)cm^(2),respectively.For SEMAC-VAT sequences,the corresponding values were(44.30±8.41)cm^(2) and(23.08±5.85)cm^(2),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 THA,and subsequently clarifying the etiology of pain.

关 键 词：磁共振成像 全髋关节置换术 金属伪影 层面编码去金属伪影矫正-视角倾斜 

分 类 号：R445.2[医药卫生—影像医学与核医学] R687.4[医药卫生—诊断学]