Perthes 病のMRI像

骨端核の経時的変化

抄録

Sixty images using magnetic resonance imaging (MRI) in sixteen patients (16hips) with Legg-Calvé-Perthes disease were evaluated over a mean period of 1 year and 10 months.
In the initial stage, MRI could demonstrate the necrotic changes of the capital femoral epiphysis as the low intensity area on T1, T2-weighted imageprior to the radiological changes. The early images in this stage presented the low intensity zone in the upper subchondral bone and this dark zone widespreaded in the epiphysis.
In the fragmentation stage, the repair tissues were characterised by high signal intensity on T2 weighted images. In the reparation stage, the signal intensity gradually increased on T1-weighted images and decreased on T2-weighted images according to the bone marrow maturity.