High-intensity zone: a diagnostic sign of painful lumbar disc on magnetic resonance imaging

British Journal of Radiology - Tập 65 Số 773 - Trang 361-369 - 1992
Charles N. Aprill1, Nikolai Bogduk1,2
1Diagnostic Conservative Management , 3715 Prytania Street, New Orleans, Newcastle 2308, Australia
2Faculty of Medicine, University of Newcastle , Newcastle 2308, Australia

Tóm tắt

Abstract

The prevalence, validity and reliability of high-intensity zones in the annulus fibrosus seen on T  2-weighted magnetic resonance images of patients with intractable low-back pain were determined. This sign was readily recognized by two independent observers. It occurred in 28% of 500 patients undergoing magnetic resonance imaging for back pain. The presence of a highintensity zone correlated significantly with the presence of Grade 4 annular disruption and with reproduction of the patient's pain. Its sensitivity as a sign of either annular disruption or pain was modest but its specificity was high, and its positive predictive value for a severely disrupted, symptomatic disc was 86%. This sign is diagnostic of painful internal disc disruption.

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Thông tin xuất bản

British Journal of Radiology

Tập 65 Số 773

361-369

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