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目的分析肝脏局灶性病变应用CT能谱成像进行诊断的效果。方法回顾性分析70例肝脏局灶性病变患者资料,观察CT能谱成像结果。结果患者病灶-肝脏对比噪声比(CNR)变化有规律,但也有例外。动脉期病灶和正常肝组织碘浓度比值的敏感性与特异性均为100%。动脉期病灶与正常肝组织浓度比值(LNR)为(1.05±0.13),门静脉期为(1.01±0.14);动脉期标准化碘浓度(NIC)为(0.93±0.51)g/L,门静脉期为(0.52±0.15)g/L;动脉期碘浓度(ICD)为(0.46±0.07)g/L,门静脉期为(0.35±0.08)g/L。结论 CT能谱成像用于诊断肝脏局灶性病变,准确性较好,具有推广应用价值。
Objective To analyze the effect of CT spectral imaging in the diagnosis of focal liver lesions. Methods A retrospective analysis of 70 cases of focal liver lesions in patients with CT imaging observed imaging results. Results The patient-to-liver contrast-to-noise ratio (CNR) varied regularly but with some exceptions. The sensitivity and specificity of ratio of iodine concentration in arterial phase lesions and normal liver tissue were both 100%. The LNR was 1.05 ± 0.13 in the arterial phase and 1.01 ± 0.14 in the portal vein. The normalized iodine (NIC) in the arterial phase was (0.93 ± 0.51) g / L and the portal vein phase was ( 0.52 ± 0.15) g / L. The ICD was 0.46 ± 0.07 g / L in arterial phase and 0.35 ± 0.08 g / L in portal vein. Conclusion CT spectrum imaging for the diagnosis of focal liver lesions with good accuracy, with the promotion and application value.