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首页> 外文期刊>Journal of Orthopaedic Translation >Comparisons of slice-encoding metal artifact correction and view-angle tilting magnetic resonance imaging and traditional digital radiography in evaluating chronic hip pain after total hip arthroplasty
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Comparisons of slice-encoding metal artifact correction and view-angle tilting magnetic resonance imaging and traditional digital radiography in evaluating chronic hip pain after total hip arthroplasty

机译：切片编码金属伪影校正和视角倾斜磁共振成像与传统数字放射成像在评估全髋关节置换术后慢性髋部疼痛中的比较

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Purpose The aims of this study were (1) to compare the areas of metal-induced artifacts and definition of periprosthetic structures between patients scanned with the slice-encoding metal artifact correction and view-angle tilting (SEMAC-VAT) turbo-spin-echo (TSE) prototype and those scanned with the standard TSE magnetic resonance (MR) sequences and (2) to further clarify the superiority of the SEMAC-VAT MR imaging technique at detecting lesions in patients after total hip arthroplasty (THA), compared with digital radiography (DR). Materials and methods A total of 38 consecutive patients who underwent THA were referred to MR imaging at our institution. All?patients suffered from chronic hip pain postoperatively. Twenty-three patients of the 38 were examined with a 1.5-T MR scanner using a SEMAC-VAT TSE prototype and standard TSE sequence, and the remaining 15 patients were examined with the same 1.5-T MR scanner, but using the SEMAC-VAT TSE prototype only. The traditional DR?imaging was also performed for all patients. Two radiologists then independently measured the area of metal-induced artifacts and evaluated the definition of both the acetabular and femoral zones based on a three-point scale. Finally, the positive findings of chronic hip pain after THA based on SEMAC-VAT TSE MR imaging and traditional DR imaging were compared and analysed. Results The areas of metal-induced artifacts were significantly smaller in the SEMAC-VAT TSE sequences than those in the standard TSE sequences for both the T1-weighted ( p ?
机译：目的这项研究的目的是（1）比较使用切片编码金属伪影校正和视角倾斜（SEMAC-VAT）涡轮自旋回波扫描的患者之间金属诱导的伪影的面积和假体周围结构的定义（TSE）原型以及使用标准TSE磁共振（MR）序列进行扫描的原型，以及（2）进一步阐明SEMAC-VAT MR成像技术在全髋关节置换术（THA）后检测患者病变方面的优越性，与数字射线照相（DR）。资料和方法我们机构共有38例接受THA的连续患者接受了MR成像检查。所有患者术后均患有慢性髋部疼痛。 38名患者中的23名患者使用了SEMAC-VAT TSE原型和标准TSE序列的1.5-T MR扫描仪进行了检查，其余15名患者使用了相同的1.5-T MR扫描仪进行了检查，但使用了SEMAC-VAT仅限于TSE原型。还对所有患者进行了传统的DR成像。然后，两名放射科医生独立地测量了金属引起的假象的面积，并根据三点量表评估了髋臼和股骨区的定义。最后，比较和分析了基于SEMAC-VAT TSE MR成像和传统DR成像的THA慢性髋关节疼痛的阳性结果。结果对于T1加权（p 0.001）和T2加权（p 0.001）的Turbo，在SEMAC-VAT TSE序列中，金属诱导的伪像面积明显小于标准TSE序列。反演恢复幅度图像。此外，有28位患者在SEMAC-VAT图像中显示出一系列阳性信号，而在传统DR图像中则未观察到。结论与标准的TSE MR成像相比，SEMAC-VAT MR成像可显着减少金属引起的伪影，并可能成功检测到传统DR图像中遗漏的大多数阳性体征。本文的翻译潜力这项研究的主要目的是证明SEMAC-VAT TSE原型的MR序列在THA后检测患者病变方面具有显着优势，因为MR成像具有出色的软组织分辨率。 SEMAC-VAT MR可以评估THA后的慢性髋部疼痛并确定原因，这可以帮助临床医生确定是否需要进行手术翻修。

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