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Abstract

Ossification of the posterior longitudinal ligament: MR evaluation.

S Otake, M Matsuo, S Nishizawa, A Sano and Y Kuroda
American Journal of Neuroradiology July 1992, 13 (4) 1059-1067;
S Otake
Department of Radiology, Tenri Hospital, Nara, Japan.
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M Matsuo
Department of Radiology, Tenri Hospital, Nara, Japan.
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S Nishizawa
Department of Radiology, Tenri Hospital, Nara, Japan.
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A Sano
Department of Radiology, Tenri Hospital, Nara, Japan.
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Y Kuroda
Department of Radiology, Tenri Hospital, Nara, Japan.
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Abstract

PURPOSE To investigate the MR appearance of ossification of the posterior longitudinal ligament (OPLL) of the cervical spine.

MATERIALS AND METHODS A retrospective review of MR images and conventional tomograms in 147 patients.

RESULTS In the sagittal plane, proton-density images identified the ossified lesions more clearly than did T1- and T2-weighted images. All axial sequences identified the lesions much frequently. T1-weighted images often showed areas of increased intensity within the lesions of the continuous and mixed type, especially within the thick lesions. Fat images by Dixon technique demonstrated same areas of increased intensity, which strongly suggested fatty marrow formation. On conventional tomograms, configurations of radiolucent areas within the lesions corresponded to areas of increased intensity on T1-weighted images.

CONCLUSION Proton-density sagittal and axial images are important in establishing the diagnosis of OPLL. The areas of increased intensity on T1-weighted images and radiolucent areas suggest marrow formation.

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American Journal of Neuroradiology
Vol. 13, Issue 4
1 Jul 1992
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Ossification of the posterior longitudinal ligament: MR evaluation.
S Otake, M Matsuo, S Nishizawa, A Sano, Y Kuroda
American Journal of Neuroradiology Jul 1992, 13 (4) 1059-1067;

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Ossification of the posterior longitudinal ligament: MR evaluation.
S Otake, M Matsuo, S Nishizawa, A Sano, Y Kuroda
American Journal of Neuroradiology Jul 1992, 13 (4) 1059-1067;
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