Comparison of facet joint activity on 99mTc-MDP SPECT/CT with facet joint signal change on MRI with fat suppression.
| Autor: | Lehman VT; Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA. Lehman.vance@mayo.edu., Murphy RC, Schenck LA, Carter RE, Johnson GB, Kotsenas AL, Morris JM, Nathan MA, Wald JT, Maus TP |
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| Jazyk: | angličtina |
| Zdroj: | Diagnostic and interventional radiology (Ankara, Turkey) [Diagn Interv Radiol] 2016 May-Jun; Vol. 22 (3), pp. 277-83. |
| DOI: | 10.5152/dir.2015.15203 |
| Abstrakt: | Purpose: We compared signal change on magnetic resonance imaging (MRI) with fat suppression and bone scan activity of lumbar facet joints to determine if these two imaging findings are correlated. Methods: We retrospectively identified all patients who underwent imaging of the lumbar spine for pain evaluation using both technetium-99m methylene disphosphonate single-photon emission computed tomography/computed tomography (99mTc-MDP SPECT/CT) and MRI with at least one fat-suppressed T2- or T1-weighted sequence with gadolinium enhancement within a 180-day interval, at our institution between 1 January 2008 and 19 February 2013. Facet joint activity on 99mTc-MDP SPECT/CT and peri-facet signal change on MRI were rated as normal or increased. Agreement between the two examination types were determined with the κ and prevalence-adjusted bias-adjusted κ (PABAK) statistics. Results: This study included 60 patients (28 male, 47%), with a mean age of 49±19.7 years (range, 12-93 years). The κ value indicated no agreement between 99mTc-MDP SPECT/CT and MRI (κ=-0.026; 95% confidence interval: -0.051, 0.000). The PABAK values were fair to high at each spinal level, which suggests that relatively low disease prevalence lowered the κ values. Together, the κ and PABAK values indicate that there is some degree of intermodality agreement, but that it is not consistent. Conclusion: Overall, facet joint signal change on fat-suppressed MRI did not always correlate with increased 99mTc-MDP SPECT/CT activity. MRI and 99mTc-MDP SPECT/CT for facet joint evaluation should not be considered interchangeable examinations in clinical practice or research. |
| Databáze: | MEDLINE |
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