Abstract
Purpose: Evaluate the agreement between limited MRI, which using T1W sequence or STIR sequence in coronal direction, with standard MRI in diagnosis early femoral head necrosis(FHN) occurring in high riskpatients.Subjects and methods: descriptive cross-sectional study was performed on 58 patients, who warediagnosed of femoral head osteonecrosis at stage 2 or higher according to the Arlet Ficat classification. The patients were performed hip joints MRI at the Radiology Center, Bach Mai Hospital from June 2020 to August 2021.Results: The agreement in FHN staggingbetween limited MRI using T1Wsequence, or limited MRI using STIR sequence with the standard MRI was 0.98 and 0.86, respectively. The agreement in measurement extent of osteonecrosis areabetween limited MRI using T1Wsequence, or limited MRI using STIR sequence with the standard MRI was 0.98 and 0.85.Conclusion: There was excellent agreement between the full and limited MR examinations both forstagging and determining the extent of osteonecrosis area. The time and potential cost reduction achieved when taking limited MRImay lead to more widespread using in patient care.
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