Keywords:
Musculoskeletal joint, MR, Comparative studies, Diagnostic procedure, Technical aspects, Trauma, Athletic injuries
Authors:
K. Tanitame, T. Sueoka, Y. Takahashi, Y. Honda, K. Awai; Hiroshima/JP
DOI:
10.1594/ecr2018/C-0064
Aims and objectives
The evaluation of acetabular labral injuries and femoroacetabular impingement (FAI) is difficult using standard 2D MRI sequences.
Although radial 2D MRI is useful for evaluating acetabular labral injury [1],
slice acquisition is limited within reasonable scan times.
Advantages of 3D isotropic acquisitions of MRI include a high signal-to-noise ratio (SNR),
high spatial resolution,
and the ability to yield high-quality multiplanar reconstruction (MPR) images [2,
3].
The aim of this study was to evaluate the utility of two radial reformations of 3D fat-suppressed multi-echo gradient-recalled-echo (FS multi-echo GRE) images in the evaluation of acetabular labral injuries and FAI.
First,
we evaluated the diagnostic accuracy of radial reformation through the center of the acetabulum perpendicular to the plane across the entire acetabular rim (type-1 radial reformation) for evaluating acetabular labral injury by comparison with radial 2D T2*WI.
Second,
we confirmed the utility of radial reformation perpendicular to the central axis of the femoral head and neck (type-2 radial reformation) for evaluating FAI morphology in patients suspected with acetabular labral injury.