Sueoka Takahiro, Tanitame Keizo, Honda Yukiko, Shoji Takeshi, Yamasaki Takuma, Adachi Nobuo, Kazuo Awai
Department of Diagnostic Radiology, Hiroshima Prefectural Hospital, Hiroshima, Japan.
Department of Radiology, Chugoku Rosai Hospital, Hiro-Tagaya 1-5-1, Kure, 737-0193, Japan.
Skeletal Radiol. 2019 Feb;48(2):267-273. doi: 10.1007/s00256-018-3026-1. Epub 2018 Jul 13.
To assess the utility of the radial reformation of three-dimensional fat-suppressed multi-echo gradient-recalled-echo (3D FS me-GRE) for evaluating acetabular labral injuries and femoroacetabular impingement (FAI).
A total of 25 patients with suspected acetabular labral injuries were examined using 3D FS me-GRE and radial 2D T2*-weighted imaging (T2WI) on a 3-T magnetic resonance imaging (MRI) scanner. The range of acetabular labral injuries was evaluated by radial reformation through the center of the acetabulum perpendicular to the plane across the entire acetabular rim (type 1 radial reformation) of 3D FS me-GRE and radial 2D T2WI. To evaluate the FAI morphology, we performed radial reformation perpendicular to the central axis of the femoral head and neck (type 2 radial reformation) of 3D FS me-GRE.
Acetabular labral injuries were identified in 23 patients, and no acetabular labral injury was seen in two patients on type 1 radial reformation of 3D FS me-GRE and radial 2D T2*WI. The diagnostic concordance rate for the range of acetabular labral injuries between the two imaging methods was 76.0%, and there was excellent agreement for the injured angles (r = 0.977, p < 0.001). FAI morphology could be evaluated in all patients (no FAI, n = 8; cam, n = 10; pincer, n = 4; combined cam and pincer, n = 3) using type 2 radial reformation of 3D FS me-GRE.
Type 1 and type 2 radial reformations of 3D FS me-GRE imaging were useful for evaluating acetabular labral injuries and determining whether patients with acetabular labral injuries have FAI, respectively.
评估三维脂肪抑制多回波梯度回波（3D FS me-GRE）的径向重组在评估髋臼盂唇损伤和股骨髋臼撞击症（FAI）中的应用价值。
对25例疑似髋臼盂唇损伤的患者，在3T磁共振成像（MRI）扫描仪上采用3D FS me-GRE和径向二维T2加权成像（T2WI）进行检查。通过垂直于整个髋臼边缘平面且穿过髋臼中心的3D FS me-GRE和径向二维T2*WI的径向重组（1型径向重组）来评估髋臼盂唇损伤的范围。为评估FAI形态，我们对3D FS me-GRE进行了垂直于股骨头和颈中轴线的径向重组（2型径向重组）。
在23例患者中发现髋臼盂唇损伤，在3D FS me-GRE和径向二维T2*WI的1型径向重组中，有2例患者未发现髋臼盂唇损伤。两种成像方法在髋臼盂唇损伤范围的诊断符合率为76.0%，损伤角度的一致性极佳（r = 0.977，p < 0.001）。使用3D FS me-GRE的2型径向重组可对所有患者（无FAI，n = 8；凸轮型，n = 10；钳夹型，n = 4；凸轮型和钳夹型合并，n = 3）的FAI形态进行评估。
3D FS me-GRE成像的1型和2型径向重组分别有助于评估髋臼盂唇损伤以及确定髋臼盂唇损伤患者是否患有FAI。
