能谱CT成像在鉴别肾透明细胞癌和肾乳头状癌的

CT Spectral Imaging in Differential Diagnosis of Renal Clear Cell Carcinoma and Renal Papillary Carcinoma

目的：研究能谱CT在肾癌病理分型方面的作用。方法：将45例肾癌患者进行能谱CT扫描，然后利用GSI后处理软件，测量病灶内感兴趣区的碘-水浓度、水一碘浓度、能谱曲线及40～140keV下的CT值，分析不同病理类型的肾癌能谱CT的表现。结果：肾透明细胞癌与肾乳头状细胞的碘浓度、能谱曲线斜率40～140keV下的CT值的平均值差异均有统计学意义（P〈0．05），而各组之间水浓度的平均值差异无统计学意义（P〉0．05）。结论：肾透明细胞癌与。肾乳头状癌具有不同的能谱曲线和碘含量，能谱CT鉴别肾透明细胞癌和肾乳头状细胞癌具有较好的应用前景。

Objective： To evaluate the value of spectral CT imaging in differential diagnosis of renal clear cell carcinoma and renal papillary carcinoma. Method： 45 patients who were diagnosed as renal cell carcinoma （ RCC ）were scanned in gemstone spectral imaging （ GSI ）mode. The region of interest in the mass of Iodine-water concentration, wateriodine concentration, spectrum energy curve and CT values at 40-140 keV were measured. Used GSI post processing software to analysis the spectral feature of renal clear cell carcinoma and renal papinary carcinoma. Result： There were significant differences in iodine-water concentration, spectrum energy curve and CT values at 40-140 keV existed between renal clear cell carcinoma and renal papillary carcinoma （P〈0.05）, but there were no significant difference in water-iodine concentration between them （P〉0.05） .Conclusion： There are significant differences between renal clear cell carcinoma and renal papillary carcinoma in spectrum energy curve and iodine-water concentration. Spectral CT imagine provides a promising method in differential diagnosis of renal clear cell carcinoma and renal papillary carcinoma.