[Hypersignal of the intervertebral disks in T1-weighted spin-echo MRI sequences].
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.
Vignaux
O
O
HIA du Val-de-Grâce, Paris.
Sarrazin
J L
JL
Cordoliani
Y S
YS
Cosnard
G
G
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002114:Calcinosis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013122:Spinal Diseases / Q000175:diagnosis*
Disques intervertébraux en hypersignal sur les séquences d'IRM en écho de spin pondéré T1.