Abstract
Objective This study aimed to evaluate the usefulness of suitable conventional spin-echo (CSE) and fast spin-echo (FSE) T2-weighted imaging parameters for the assessment of joint effusion in a phantom study and in a comparative study of CSE and FSE using clinical cases. Study design In the phantom study, the signal ratios of water and oil signal fields were determined and studied comparatively. The shape and size of signals were evaluated separately. In the study of joint effusion images, 318 joints were evaluated. CSE T2-weighted imaging and FSE T2-weighted imaging were carried out, and a comparative assessment was performed. Results In both CSE and FSE imaging, the ratios of mean MRI signal values showed divergence as T R/T E values increased. The evaluation of joint effusion with FSE T R/T E 8000/120 msec was significantly better than that in all other groups ( P < .01). Conclusion The use of FSE requires investigation of T R/T E values. When a 0.5 T static field strength MRI apparatus is employed, T R/T E 8000/120 msec is recommended.
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