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Chronic sciatica is a major cause of disability worldwide, but accurate diagnosis of the causative pathology remains challenging. In this report, the feasibility of an 18 F-FDG PET/MRI approach for improved diagnosis of chronic sciatica is presented. Methods:  18 F-FDG PET/MRI was performed on 9 chronic sciatica patients and 5 healthy volunteers (healthy controls). Region-of-interest analysis using SUV max was performed, and 18 F-FDG uptake in lesions was compared with that in the corresponding areas in healthy controls. Results: Significantly increased 18 F-FDG uptake was observed in detected lesions in all patients and was correlated with pain symptoms. 18 F-FDG-avid lesions not only were found in impinged spinal nerves but also were associated with nonspinal causes of pain, such as facet joint degeneration, pars defect, or presumed scar neuroma. Conclusion: The feasibility of 18 F-FDG PET/MRI for diagnosing pain generators in chronic sciatica was demonstrated, revealing various possible etiologies.

18F-FDG PET/MRI in Chronic Sciatica: Early Results Revealing Spinal and Nonspinal Abnormalities

¹⁸F-FDG PET/MRI in Chronic Sciatica: Early Results Revealing Spinal and Nonspinal Abnormalities