Comparative analysis of CT and magnetic resonance imaging in the diagnosis of osteosarcoma

Abstract

Objective To compare the value and imaging features of computed tomography (CT) and magnetic resonance imaging (MRI) in the diagnosis of osteosarcoma. Methods The clinical data of 72 patients with osteosarcoma in our hospital from February 2017 to June 2018 were retrospectively analyzed. CT, magnetic resonance imaging were performed before operation, compared with pathological findings. The diagnostic accuracy and invasive range of MRT and CT were evaluated and the imaging features were analyzed. Results The positive rate of CT, magnetic resonance imaging in the diagnosis of osteosarcoma were 95.83% and 100.00%, there was no statistically significant difference between the two groups (P>0.05). There were no statistically significant differences in the accuracy of CT and MRI in the diagnosis of Codman triangle, tumor of bone, and bone destruction (10.81%, 95.83%, 97.22% vs. 18.92%, 97.22%, 93.06%) (P>0.05). The accuracy of magnetic resonance imaging in the diagnosis of peritumoral edema zone, leaping lesions, soft tissue masses, and small tumor bones were 100.00%, 100.00%, 95.71%, 90.00%, higher than those of CT (29.41%, 33.33%, 74.29%, 50.00%), with statistically significant differences (P<0.05). Magnetic resonance imaging was superior to CT in the diagnosis of osteosarcoma (77.78% vs. 62.50%), with statistically significant difference (P<0.05). Conclusion Both CT and MRI have good clinical value in the diagnosis of osteosarcoma, but magnetic resonance imaging is more effective in detecting the signs and infiltrating areas of osteosarcoma. Key words: Osteosarcoma; CT; Magnetic resonance imaging; Application value; Imaging features