Ankle sprain is a common athletic injury. Most patients with acute ankle sprain could not be treated properly, without precise diagnosis. Conventional Magnetic Resonance Imaging (MRI) sequences, like T1WI and T2WI, could not provide diagnostic proof as accurately as possible. Proton density weighted imaging (PDWI) collaborating with fat saturation (FS) could be a better alternative to detect the lesions. A comparative study was established, to investigate the performance of 4 sequences, with 8-channel carotid special surface coil. The results showed that PDWI-FS may be the best choice on diagnosis of ankle injuries among 4 sequences
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