CT is currently recommended for the assessment of size of plasmacytomas and for the monitoring of their size during treatment, whereas PET-CT is recommended for the assessment of metabolic activity of lesions and in follow-up regarding the assessment of imaging MRD. However, the assessment of response by whole body diffusion-weighted MRI using Myeloma Response Assessment and Diagnosis (MY-RADS) criteria, and in particular the so-called response assessment categories, has proven significantly prognostic...
CT is currently recommended for the assessment of size of plasmacytomas and for the monitoring of their size during treatment, whereas PET-CT is recommended for the assessment of metabolic activity of lesions and in follow-up regarding the assessment of imaging MRD. However, the assessment of response by whole body diffusion-weighted MRI using Myeloma Response Assessment and Diagnosis (MY-RADS) criteria, and in particular the so-called response assessment categories, has proven significantly prognostic. Similarly to assessment of metabolic response by PET using IMPeTUs criteria. And in our study, early evaluation of concordance between PET-CT and whole-body diffusion-weighted MRI regarding response assessment has displayed a very good concordance between the two techniques, thus suggesting that whole-body diffusion-weighted MRI can be alternatively used to PET-CT regarding response assessment.
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