MRI of disc space infection in infants and children

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Abstract
The MR aspects of spondylodiscitis in pediatric patients were studied with a 0.5-Tesla supraconductive magnet: 12 patients were divided in two groups; acute disease (9) and period of sequelae (3). The first group was divided into two subgroups according to the age and the clinical findings: infants (2) and children (7). In infants, MR gave good visualization of the destruction of vertebrae and discs. Presuppurative abscesses appeared as light signals, their extent and position relative to the cord being clearly visualized in frontal and sagittal planes in T1-weighted images. In older children, there were a low vertebral signal and disappearance of the disc-vertebra borders on T1-weighted images and a high vertebral signal with a decreased and flattened disc signal on T2-weighted images. Frontal and sagittal planes were used. During the first month of antibiotic therapy, the follow-up scans showed no changes, and even disclosed a spread of the abnormal signal in the vertebral body. At the stage of sequelae, on T1 the spinal signal was normal with a decreased disc width and on T2 the disc signal was low while the vertebrae appeared normal.