Initial experience with 3D isotropic high-resolution 3 T MR arthrography of the wrist
| Autor: | Yasuhito Kaneko, Gregory Rafijah, Taiki Nozaki, David M. Hitt, Hiroshi Yoshioka, Hon J. Yu, John K. Sutherland |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Adult
Male medicine.medical_specialty Wilcoxon signed-rank test Adolescent Image quality Wrist 030218 nuclear medicine & medical imaging 03 medical and health sciences Young Adult 0302 clinical medicine Mr arthrography Imaging Three-Dimensional Rheumatology medicine MR arthrography Humans Orthopedics and Sports Medicine Arthrography Retrospective Studies medicine.diagnostic_test business.industry Isotropy Magnetic resonance imaging Middle Aged Musculoskeletal MRI Magnetic Resonance Imaging medicine.anatomical_structure Wrist MRI 030220 oncology & carcinogenesis Coronal plane Female Radiology business Nuclear medicine Triangular Fibrocartilage Complex 3D MR imaging Research Article |
| Zdroj: | BMC Musculoskeletal Disorders |
| ISSN: | 1471-2474 |
| Popis: | Background Our study was performed to evaluate the image quality of 3 T MR wrist arthrograms with attention to ulnar wrist structures, comparing image quality of isotropic 3D proton density fat suppressed turbo spin echo (PDFS TSE) sequence versus standard 2D 3 T sequences as well as comparison with 1.5 T MR arthrograms. Methods Eleven consecutive 3 T MR wrist arthrograms were performed and the following sequences evaluated: 3D isotropic PDFS, repetition time/echo time (TR/TE) 1400/28.3 ms, voxel size 0.35x0.35x0.35 mm, acquisition time 5 min; 2D coronal sequences with slice thickness 2 mm: T1 fat suppressed turbo spin echo (T1FS TSE) (TR/TE 600/20 ms); proton density (PD) TSE (TR/TE 3499/27 ms). A 1.5 T group of 18 studies with standard sequences were evaluated for comparison. All MR imaging followed fluoroscopically guided intra-articular injection of dilute gadolinium contrast. Qualitative assessment related to delineation of anatomic structures between 1.5 T and 3 T MR arthrograms was carried out using Mann–Whitney test and the differences in delineation of anatomic structures among each sequence in 3 T group were analyzed with Wilcoxon signed-rank test. Quantitative assessment of mean relative signal intensity (SI) and relative contrast measurements was performed using Wilcoxon signed-rank test. Results Mean qualitative scores for 3 T sequences were significantly higher than 1.5 T (p |
| Databáze: | OpenAIRE |
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