摘要
目的观察能谱曲线鉴别诊断肝脏小肿瘤的价值。方法回顾性分析49例肝脏占位患者，其中肝小血管瘤（SHH）18例，小肝癌（SHCC）18例，肝小转移瘤（SLM）13例，均采用宝石CT能谱成像模式（GSI）扫描，获得门静脉期的能谱系列图像；观察SHH、SHCC、SLM的能谱曲线规律，分别选取50ke V和100ke V两点作为参考点，测量并计算3种病灶的能谱曲线斜率，并进行单因素方差分析。结果SHH、SHCC、SLM的能谱曲线在40～80keV能量区间内均呈明显下降趋势，80～140ke V能量区间内较平缓下降，且在40～80ke V能量区间内3种病灶的能谱曲线差异较大。3种病灶的能谱曲线斜率分别为2．77±1．03、1．99±0．42、0．80±0．34，差异具有统计学意义（P〈0．05）。结论能谱曲线及其斜率可以反映物质的同源性，对鉴别肝脏小肿瘤病变性质有一定价值。
Objective To explore the value of spectral curve in differential diagnosis of small hepatic tumors. Methods A retrospective analysis of 49 patients with small liver occupying lesions was performed, including 18 patients with small he- patic hemangioma （SHH）, 18 with small hepatocellular carcinoma （SHCC） and 13 with small hepatic metastases （SLM）. Images of all patients were obtained with gemstone CT spectral imaging （GSI） scanning. According to the law of the spec- trum curves about SHH, SHCC and SLM, 50 keV and 100 keV were selected as reference points, and then the rate of curves of these lesions were measured and calculated. One-way analysis of variance was applied to analyze the results. Re- suits The energy spectrum curves of SHH, SHCC, SLM displayed trend of significant decline in keV energy interval of 40-80, while descending gently in keV energy interval of 80-140. The slope was 2.77±1.03, 1. 993-0.42 and 0. 80±0.34 respectively for three spectrum curves （P〈0.05）. Conclusion The homology of substance can be reflected by energy spectrum curve and its slope, thus contributing to differential diagnosis of small hepatic tumors.
出处
《中国医学影像技术》
CSCD
北大核心
2014年第4期552-555,共4页
Chinese Journal of Medical Imaging Technology
基金
潍坊市卫生局科技发展项目(2013089)
关键词
能谱曲线
体层摄影术
X线计算机
肝肿瘤
Energy spectrum curve
Tomography, X-ray computed
Liver neoplasms
