Value of Spectral CT Quantitative Parameters in the Differential Diagnosis of Metastatic Spine Tumors and Multiple Myeloma
Objective To explore the value of spectral CT quantitative parameters in the differential diagnosis of meta-static spine tumors(MST)and multiple myeloma(MM).Methods A total of 60 patients with spinal malignancies pathologically confirmed were retrospectively enrolled as the research objects.According to the results of surgery or puncture biopsy,they were divided into MST group(39 cases)and MM group(21 cases).All patients underwent spectral CT scans.The spectral CT quantita-tive parameters were compared between the 2 groups and value of the parameters in the differential diagnosis of MST and MST was analyzed.Results There was no significant difference in clinical manifestations or lesion sites between the 2 groups(P>0.05).CT values under 40～90 keV and K in MST group were higher than those in MM group(P>0.05).There was no significant difference in CT values under 100～140 keV between the 2 groups(P>0.05).With the increase of energy level,CT values was decreased in both groups.Conclusion CT values under 40～90 keV and and slope K are valuable in the differential diagnosis of MST and MM.
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