2024 Volume 15 Issue 6 Pages 929-934
Introduction: When diagnosing lumbar spondylolysis in children and adolescents, computed tomography (CT) is necessary to observe the form of spondylolysis and select a treatment strategy. However, from the perspective of radiation exposure, it is best to avoid CT as much as possible. Bone imaging Magnetic Resonance Imaging (MRI) is an imaging method that has recently been attracting attention, and it can produce images similar to CT images. In this study, Bone imaging MRI and CT of lumbar spondylolysis were compared, and the diagnostic rates of Bone imaging MRI were clarified.
Subjects and Methods: There were 97 children and adolescents with lumbar spondylolysis who visited our hospital for the first time between June 2022 and September 2023. Of these, 85 patients underwent simultaneous Bone imaging MRI and CT (180 locations). Canon 1.5-T MRI device was used, and the sequence name was 3DFE, M-Echo method. Using the CT findings as the standard, the sensitivity, specificity, positive predictive value and negative predictive value of Bone imaging MRI were calculated.
Results: Bone imaging MRI by 1.5-T MRI showed a sensitivity of 63.2% (74/117), specificity of 96.8% (61/63), positive predictive value of 93.5% (74/76), negative predictive value of 58.7% (61/104).
Conclusions: Bone imaging MRI by 1.5-T MRI has low sensitivity and high positive predictive value. By combining Bone imaging MRI and STIR imaging, it may be possible to avoid CT in selected cases.
