The “CHAFT” Mnemonic for Musculoskeletal Lesions With Low T2 Signal Intensity

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Editor's Note: Utilization by diagnostic radiologists of the “CHAFT” mnemonic for identification of musculoskeletal, brain and spine, and abdominal lesions with low T2 MR signal intensity on MRI will be presented in 3 sequential articles: Volume 35, Numbers 6, 7, and 8, respectively.Musculoskeletal lesions that present with low T2 MR signal intensity have a limited list of differential diagnoses. The objectives of this pictorial CME presentation are to review briefly the MR physics of low T2 signal, to introduce the “CHAFT” mnemonic to provide a framework for the differential diagnosis, and to demonstrate the importance of radiographic correlation in arriving at the correct diagnosis.

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