[논문][18F]FDG uptake in proximal muscles assessed by PET/CT reflects both global and local muscular inflammation and provides useful information in the management of patients with polymyositis/dermatomyositis

Tanaka, Shigeru; Ikeda, Kei; Uchiyama, Katsuhiro; Iwamoto, Taro; Sanayama, Yoshie; Okubo, Ayako; Nakagomi, Daiki; Takahashi, Kentaro; Yokota, Masaya; Suto, Akira; Suzuki, Kotaro; Nakajima, Hiroshi

doi:10.1093/rheumatology/ket112

[18F]FDG uptake in proximal muscles assessed by PET/CT reflects both global and local muscular inflammation and provides useful information in the management of patients with polymyositis/dermatomyositis 원문보기

Rheumatology, v.52 no.7, 2013년, pp.1271 - 1278

Tanaka, Shigeru (1Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University and 2Diagnostic PET Imaging Center, Department of Radiology, Sannoh Medical Center, Chiba, Japan.) , Ikeda, Kei (1Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University and 2Diagnostic PET Imaging Center, Department of Radiology, Sannoh Medical Center, Chiba, Japan.) , Uchiyama, Katsuhiro (1Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University and 2Diagnostic PET Imaging Center, Department of Radiology, Sannoh Medical Center, Chiba, Japan.) , Iwamoto, Taro (1Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University and 2Diagnostic PET Imaging Center, Department of Radiology, Sannoh Medical Center, Chiba, Japan.) , Sanayama, Yoshie (1Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University and 2Diagnostic PET) , Okubo, Ayako , Nakagomi, Daiki , Takahashi, Kentaro , Yokota, Masaya , Suto, Akira , Suzuki, Kotaro , Nakajima, Hiroshi

Abstract ▼ AI-Helper

Objective. This study aimed to determine whether [18F]fluorodeoxyglucose-PET/CT ([18F]FDG-PET/CT) discriminates PM/DM from non-muscular diseases and also whether FDG uptake in proximal muscles reflects the activity and severity of muscular inflammation in PM/DM.Methods. Twenty treatment-naïve PM/DM patients who underwent [18F]FDG-PET/CT were retrospectively identified by reviewing medical records. The same number of age- and sex-matched control patients with non-muscular diseases were also identified. Standardized uptake value (SUV) was calculated for each of the seven proximal muscles. For patient-based assessment, mean proximal muscle SUV was calculated by averaging the SUVs for these proximal muscles bilaterally.Results. Mean proximal muscle SUVs were significantly greater in PM/DM patients than in control patients (median 1.05 vs 0.69, P < 0.001). Mean proximal muscle SUVs significantly correlated with mean proximal manual muscle test scores (ρ = 0.49, P = 0.028) and serum levels of creatine kinase (ρ = 0.54, P = 0.015) and aldolase (ρ = 0.64, P = 0.002). Furthermore, SUVs in proximal muscles from which biopsy specimens were obtained significantly correlated with histological grade for inflammatory cell infiltration (ρ = 0.66, P = 0.002).Conclusion. Our results suggest that [18F]FDG-PET/CT is useful in the diagnosis of PM/DM when inflammation in proximal muscles is globally assessed with quantitative measurements. Our results also indicate that local FDG uptake in a proximal muscle reflects the activity of inflammation in the same muscle and provides useful information in determining the region for muscle biopsy.

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[18F]FDG uptake in proximal muscles assessed by PET/CT reflects both global and local muscular inflammation and provides useful information in the management of patients with polymyositis/dermatomyositis 원문보기

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