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Abstract #4786

Five-level scale for post treatment whole body MRI-DWI interpretation in lymphoma (Minsk scale): comparison with PET/CT Deauville scale

Siarhei A Kharuzhyk1, Andrei V Dziuban 2, Edward A Zhavrid3, Elena V Sukolinskaja 3, and Olga A Kalenik 3
1Radiology, N.N. Alexandrov National Cancer Center, Lesnoy, Minsk District, Belarus, 2PET/CT, N.N. Alexandrov National Cancer Center, Lesnoy, Minsk District, Belarus, 3Chemotherapy, N.N. Alexandrov National Cancer Center, Lesnoy, Minsk District, Belarus

PET/CT is a standard imaging technique for tumor response assessment in lymphoma. Deauville scale is used to interpret post treatment PET/CT studies. We proposed 5-level scale for whole body MRI-DWI exams interpretation (Minsk scale) in patients with lymphoma after treatment. Five-level structure of Minsk scale makes it comparable to Deauville scale. Treatment response assessment using MRI-DWI and Minsk scale match PET/CT results in 93 of 105 (89%) patients. Survival analysis confirmed prognostic value of Minsk scale. MRI-DWI and Minsk scale could be recommended for tumor response evaluation in lymphoma as non-irradiative alternative to PET/CT.

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