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[Hypersignal of the intervertebral disks in T1-weighted spin-echo MRI sequences]
O Vignaux1, J L Sarrazin, Y S Cordoliani
1HIA du Val-de-Grâce, Paris.
Journal De Radiologie
|June 1, 1994
Abstract:
In magnetic resonance imaging, when there is calcification of the intervertebral disk, signals usually become weaker in all the sequences. Exceptionally, a spontaneous hypersignal is obtained in T1 weighted spin-echo sequences. We report 4 cases of spontaneous hypersignals from disks in T1 weighted spin-echo sequences. In 3 cases, calcifications were visualized with conventional radiology or computed tomography. In 1 case, there was no calcification of the disk, but its density, compared with adjacent disks, was 20 HU greater, suggesting inframacroscopic calcification.