Lumbar Intervertebral Disc Abnormalities: Comparison of Quantitative T2 Mapping with Conventional MR at 3.0 T

Overview

Journal Eur Radiol

Specialty Radiology

Date 2010 Jun 19

PMID 20559835

Citations 49

Authors

Siegfried Trattnig

David Stelzeneder

Sabine Goed

Michael Reissegger

Tallal C Mamisch

Tatjana Paternostro-Sluga

Michael Weber

Pavol Szomolanyi

Goetz H Welsch

Affiliations

Soon will be listed here.

Abstract

Objective: To assess the relationship of morphologically defined lumbar disc abnormalities with quantitative T2 mapping.

Methods: Fifty-three patients, mean age 39 years, with low back pain were examined by MRI at 3 T (sagittal T1-fast spin echo (FSE), three-plane T2-FSE for morphological MRI, multi-echo spin echo for T2 mapping). All discs were classified morphologically. Regions of interest (ROIs) for the annulus were drawn. The space in between was defined as the nucleus pulposus (NP). To evaluate differences between the classified groups, univariate ANOVA with post hoc Games-Howell and paired two-tailed t tests were used.

Results: In 265 discs we found 39 focal herniations, 10 annular tears, 123 bulging discs and 103 "normal discs". T2 values of the NP between discs with annular tear and all other groups were statistically significantly different (all p ≤ 0.01). Discs with annular tears showed markedly lower NP T2 values than discs without. The difference in NP T2 values between discs with focal herniation and normal discs (p = 0.005) was statistically significant. There was no difference in NP T2 values between bulging and herniated discs (p = 0.11)

Conclusion: Quantitative T2 mapping of the nucleus pulposus of the intervertebral disc in the lumbar spine at 3 T reveals significant differences in discs with herniation and annular tears compared with discs without these abnormalities.

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