Bernd L, Sabo D, Rosenberg R, Heichel T
Stiftung Orthopädische Universitätsklinik Heidelberg.
Z Orthop Ihre Grenzgeb. 1996 Jul-Aug;134(4):366-70. doi: 10.1055/s-2008-1039776.
The purpose of the study was to examine the accuracy of MRI in distinguishing between the cartilage of the femoral head and the acetabulum in vivo. In 20 healthy and 41 arthrotic hips an MRI was performed, using a special traction on the hips. With T1-weighted 3-dimensional gradient-echo sequence it is possible to distinguish between the high-signal femoral head and acetabular cartilage by having a low signal of the joint space. In the horizontal position of the phase encoding parameters a reduction of the chemical-shift artefact can be achieved mainly in the ventro-lateral areas. In addition it is possible to discriminate between four qualities of cartilage. The extent and localisation of degenerative cartilage in the hip joint can influence the indication of osteotomies for the hip joint.
本研究的目的是在活体中检验MRI区分股骨头和髋臼软骨的准确性。对20例健康髋关节和41例患有关节炎的髋关节进行了MRI检查，检查时对髋关节施加特殊牵引。使用T1加权三维梯度回波序列，通过关节间隙的低信号，可以区分高信号的股骨头和髋臼软骨。在相位编码参数的水平位置，主要在腹外侧区域可以减少化学位移伪影。此外，还可以区分软骨的四种质量等级。髋关节退变软骨的范围和位置会影响髋关节截骨术的适应证。
