采用T2* 映射的磁共振成像改善髋关节撞击综合征中髋臼软骨评估——一例与关节镜检查相关的病例报告
MR Imaging with T2*- mapping for improved acetabular cartilage assessment in FAI-a case report with arthroscopic correlation.
作者信息
Morgan P, Spiridonov S, Goebel R, Nissi M, Frei R, Ellermann J
机构信息
Department of Orthopaedic Surgery, University of Minnesota, 2512 South 7th Street, Minneapolis, MN, 55454, USA.
Department of Radiology, University of Minnesota, 2021, Sixth Street SE, Minneapolis, MN 55455, USA.
出版信息
Orthop Traumatol Surg Res. 2014 Dec;100(8):971-3. doi: 10.1016/j.otsr.2014.09.014. Epub 2014 Nov 6.
UNLABELLED
Articular cartilage assessment in femoroacetabular impingement (FAI) is challenging. Recent studies on T2* relaxation time mapping suggest the technique may be useful in diagnosing cartilage damage. The purpose of this case report is to describe how quantitative T2*-mapping may improve cartilage assessment of the acetabulum in patients with FAI. MR arthrography was performed at 3 Tesla (T) using intra-articular Gadolinium and a T2* mapping protocol. Data from the acetabular cartilage was separated from femoral head cartilage data and then superimposed on a flattened, map projection representation of the patient's acetabulum. The areas of unhealthy cartilage observed at the time of arthroscopy - including debonding and delamination - were seen preoperatively at the same anatomic locations as areas of decreased T2* values. T2* mapping values provided a non-invasive assessment of the acetabular articular cartilage. A flattened acetabular map projection allowed for anatomic visualization of areas of unhealthy cartilage.
LEVEL OF EVIDENCE
Level IV.
未标注
股骨髋臼撞击症（FAI）中的关节软骨评估具有挑战性。近期关于T2弛豫时间成像的研究表明，该技术可能有助于诊断软骨损伤。本病例报告的目的是描述定量T2成像如何改善FAI患者髋臼软骨的评估。使用关节内钆剂和T2成像方案在3特斯拉（T）下进行磁共振关节造影。髋臼软骨的数据与股骨头软骨数据分离，然后叠加在患者髋臼的扁平地图投影图上。关节镜检查时观察到的不健康软骨区域——包括脱粘和分层——在术前于与T2值降低区域相同的解剖位置被发现。T2*成像值提供了髋臼关节软骨的非侵入性评估。扁平的髋臼地图投影允许对不健康软骨区域进行解剖可视化。
证据水平
IV级。
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