A comparative study of radiographic lumbar Modic changes / 实用放射学杂志

ABSTRACT

Objective To analyze the imaging performances and significance of Modic changes on X-ray,CT and MRI.Methods The imaging data (MR,CT and X-ray)of patients with low back pain were retrospectively analyzed.The selected patients’images were studied on the same work station by the two physician experts in muscle and bone imaging.A double-blind method was used. Firstly,MRI was used to sort the MC.Then,the alterations of the density in the lesions on X-ray plain film and CT image were measured.if the judgments of the two readers were inconsistent,another professor of radiology will join the discussion and consist-ent results will be got finally.The data were recorded using Excel 2010,and processed for statistical analysis using SPSS 1 6.0.Re-sults A total of 47 cases that met the requirements were collected which included 1 6 males and 31 females,aged from 32 to 76 years,with a median age of 56.0 years.A total of 93 on MRI endplate were changed.However,a part of lumbar endplates with MC on MRI images were displayed as higher density than normal vertebral body on the X-ray and CT reconstruction images (total of 36).The occurrence rates of Type Ⅰ,Type Ⅱ,Type Ⅰ/Ⅱ were 40.0%,14.8%,58.3%,respectively.But the occurrence rate of Type Ⅲ (100%)and hybrid Type which contained type Ⅲ were 100%.Conclusion Some Modic typeⅠ,Ⅱ,Ⅰ/Ⅱchanges in X-ray plain film, CT reconstruction images had a higher density,speculating that there is reactive new bone formation,which reflects the internal ver-tebral body bone mineralized rather than the change of the bone marrow.