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Diagnostic value of T1ρ and T2 mapping sequences of 3D fat-suppressed spoiled gradient (FS SPGR-3D) 3.0-T magnetic resonance imaging for osteoarthritis.
Li, Zhihui; Wang, Hanqi; Lu, Yong; Jiang, Meihua; Chen, Zhe; Xi, Xiaobing; Ding, Xiaoyi; Yan, Fuhua.
Afiliación
  • Li Z; Radiology Department.
  • Wang H; Radiology Department.
  • Lu Y; Radiology Department.
  • Jiang M; Radiology Department.
  • Chen Z; Radiology Department.
  • Xi X; Orthopedics and Traumatology Department, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
  • Ding X; Radiology Department.
  • Yan F; Radiology Department.
Medicine (Baltimore) ; 98(1): e13834, 2019 Jan.
Article en En | MEDLINE | ID: mdl-30608398
Three-dimensional fat-suppressed spoiled gradient magnetic resonance imaging can be used to observe cartilages with high resolution.To quantify and compare the T1ρ and T2 relaxation times of the knee articular cartilage between healthy asymptomatic adults and patients with osteoarthritis (OA).This was a retrospective study of 53 patients with symptomatic OA (6 males and 47 females; aged 57.6 ±â€Š10.0 years) and 26 healthy adults (11 males and 15 females; aged 31.7 ±â€Š12.2 years) from the Ruijin Hospital. T1ρ and T2 relaxation times of knee cartilage were quantified using sagittal multi-echo T1ρ and T2 mapping sequences (3.0-T scanner) and analyzed by receiver operating characteristic (ROC) curve.T1ρ and T2 relaxation times in the OA group were higher than in controls (both P < .01). The sensitivity, specificity, and critical value for differentiating normal from OA cartilage were respectively 92%, 85.6%, and 45.90 ms for T1ρ, and 93.6%, 93.3%, and 50.42 ms for T2. T2 mapping sequence showed a higher area under the ROC curve (AUC) than T1ρ (0.965 vs 0.927, P = .02). The AUC for differentiating normal from Noyes IIA cartilage was 0.922 for T1ρ (cut-off: 46.0; sensitivity: 87.7%; specificity: 89.7%) and 0.954 for T2 (cut-off: 49.5; sensitivity: 91.2%; specificity: 92.3%), with no significant difference between them (P = .08).Both T1ρ and T2 mapping sequences could be used to assess OA cartilage lesions, with T2 mapping sequence demonstrating significant sensitivity for cartilage degeneration. These 2 sequences could also identify early-stage OA cartilage.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Procesamiento de Imagen Asistido por Computador / Imagen por Resonancia Magnética / Cartílago Articular / Osteoartritis de la Rodilla / Imagenología Tridimensional Tipo de estudio: Diagnostic_studies / Evaluation_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Medicine (Baltimore) Año: 2019 Tipo del documento: Article Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Procesamiento de Imagen Asistido por Computador / Imagen por Resonancia Magnética / Cartílago Articular / Osteoartritis de la Rodilla / Imagenología Tridimensional Tipo de estudio: Diagnostic_studies / Evaluation_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Medicine (Baltimore) Año: 2019 Tipo del documento: Article Pais de publicación: Estados Unidos