Pelvic MRI Assessment Of Bone Marrow Involvement In Lymphoma

Objective:To investigate the role of pelvic MRI in detecting bone marrow involvement（BMI）in lymphoma.Methods:122 patients with lymphoma were enrolled in this study,and BMI positive rates of bone marrow biopsy,pelvic MRI and 65 ¹⁸F-FDG PET-CT were analyzed.Imaging features of pelvic MRI and ¹⁸F-FDG PET-CT were analyzed.Results:（1）The BMI positive rates of bone marrow biopsy（BMB）and pelvic MRI in 122 patients were 14.8%（18/122）and 28.7%（35/122）,respectively.The BMI positive rate of pelvic MRI was higher than BMB（P=0.008）.（2）A total of 65 patients underwent both pelvic MRI and ¹⁸F-FDG PET-CT.The BMI positive rates between pelvic MRI and ¹⁸F-FDG PET-CT were no statistical difference（29.2%vs.26.2%,P=0.695）.（3）The ability of pelvic MRI in detecting the location of lesions was similar to¹⁸F-FDG PET-CT.（4）Lesions of BMI were distributed in bone marrow separately,especially in pelvis.Conclusion:The BMI positive rates of pelvic MRI were higher than BMB.There was no significant difference in detecting BMI between pelvic MRI and¹⁸F-FDG PET-CT.