Diagnostic Value of PDFF and OP/IP for Multiple Myeloma Bone Disease of Thoracic and Lumbar Spine

• Published in: Zhongliu fangzhi yanjiu Vol. 47; no. 2; pp. 115 - 118
• Main Authors: Wei, Ling, Wang, Fengzhe, Yin, Guoliang, Pan, Shinong
• Format: Journal Article
• Language: Chinese
• Published: Tianjin China Anti-Cancer Association 01.02.2020; Magazine House of Cancer Research on Prevention and Treatment
• Subjects: Bone diseases; Bone imaging; Correlation analysis; diagnosis; Diagnostic systems; Lesions; Magnetic resonance imaging; Multiple myeloma; Parameters; Performance evaluation; Proton density (concentration); Spine; Spine (lumbar); Statistical analysis; Vertebrae
• ISSN: 1000-8578; 1000-8578
• DOI: 10.3971/j.issn.1000-8578.2020.19.0906

Objective To investigate the diagnostic value of proton density fat fraction (PDFF) and in phase and out of phase imaging (OP/IP) for thoracic and lumbar multiple myeloma bone disease (MMBD). Methods All patients underwent spinal MRI, including sagittal T1WI, sagittal STIR, sagittal mDxion quant and sagittal mDxion FFE. The normal vertebrae and benign lesion vertebrae were non-MMBD lesion group, and the MMBD lesion vertebrae was MMBD lesion group, and the PDFF and OP/IP value were measured respectively. Two independent sample t-tests were performed, and the receiver operating characteristic (ROC) curve was used to evaluate the diagnostic performance of the two parameters for MMBD; the Pearson test was used to analyze the correlation between the two parameters. The diagnostic cutoff value of OP/IP and PDFF were calculated by Youden index method. Results The PDFF of the MMBD lesion group was lower while the OP/IP was higher than those of the non-MMBD lesion group (both P < 0.05). The diagnostic cutoff values, t