Comparison of bone scintigraphy and whole-body diffusion-weighted magnetic resonance imaging in the detection of bone metastases
No Thumbnail Available
Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Purpose: The aim of this study was o evaluate the efficacyand success of whole-body diffusion-weighted magneticresonance imaging (WB-DW-MRI) as a new method forthe detection of bone metastasis commonly seen inmalignancies, compared to bone scintigraphy.Materials and Methods: The WB-DW-MRI findings of21 patients with primary malignancies and bone metastaseswere retrospectively evaluated and compared toscintigraphy findings.Results: Twenty-one patients had 143 metastatic lesionsdetected by scintigraphy, and 96 of these bone metastaseswere also detected on WB-DW-MRI. The area where thesuccess of WB-DW-MRI was highest was the lowerextremities, for which 12 (92.3%) of 13 metastases wereidentified. This was followed by vertebrae, for which WBDW-MRI detected 39 (86.6%) of 45 metastases. Themetastasis detection rates for the upper extremities, pelvis,and cranium were calculated as 73.6%, 63.1%, and 60%,respectively. WB-DW-MRI was least successful inidentifying metastases in ribs, with only 16 (38.1%) of 42metastases being detected by this modality.Conclusion: In line with the findings obtained from thisstudy, it is considered that WB-DW-MRI may besuccessful in the detection of bone metastases, especiallyin the axial skeleton. The failure observed for the ribs canbe remedied by newly developed magnetic sensitivitytechnologies, increasing geometric resolution, and fastsequences that will prevent motion artifacts.