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The Differentiation of Soft Tissue Infiltration and Surrounding Edema in an Animal Model of Malignant Bone Tumor: Evaluation by Dual-Energy CT

Haisong Chen, Yuan Zhang, Jing Pang, Zeng-Jie Wu, Meng Jia, Q. Dong, Wenjian Xu

Technology in Cancer Research and Treatment, 2019

19 citations

Abstract

To study the value of dual energy computed tomography in distinguishing soft tissue infiltration from surrounding soft tissue edema in rabbit malignant bone tumor, a malignant bone tumor model was established through implantation of VX2 tumor fragments into the tibiae of rabbits. Tumor adjacent soft tissues were divided into 3 areas according to pathology and computed tomography images. Computed tomography spectral curve slopes and iodine and water concentrations were assessed. Statistical analyses were performed using the Mann-Whitney U test and t test. The spectral curve of the soft tissue infiltration areas has a slope (1.30 ± 0.41) higher than that of the soft tissue edema areas (0.71 ± 0.23; P < .001). The iodine concentration in the soft tissue infiltration areas (8.56 ± 2.15) was higher than that in the in soft tissue edema areas (6.09 ± 1.02; P < .001). Water concentration was similar in the soft tissue infiltration areas (1033.86 ± 10.50) to that of the edema areas (1031.45 ± 12.83; P < .05). Spectral curve analysis and iodine–water concentration are helpful in the differentiation of bone tumor soft tissue infiltration and soft tissue edema.

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