摘要
目的:研究螺旋动脉期、门脉期及病灶延迟期扫描在肝癌诊断中的应用,以进一步选择理想的扫描时期和方CT案。方法:对例肝细胞性肝癌患者行平扫及增强扫描,造影剂注射速率为,然后开始动脉期、门脉期及病灶延迟期扫483ml/s描。统计各期的病灶检出数,观察病灶在不同时期的特征。结果:动脉期、门脉期及病灶延迟期的病灶检出率分别为、91.9%、,动脉期和门脉期、病灶延迟期之间均有显著差异,而门脉期和病灶延迟期之间无差异。76.9%78.8%结论:在肝癌的检出方面动脉期价值最大,而门脉期和延迟期之间无差异。双期扫描(动脉期加门脉期)可作为肝癌诊断的常规技术,对不典CT型病例,病灶延迟期很有必要,有助于病灶的定性。
Objective: 、To compare the value of the arterialportal venous and equilibrium phase scans in the diagnosis of hepatocellular carcinoma (HCC), and choose the optimal scan phase and protocol. Methods: The per and postcontrast CT scanning of the entire liver in 48 patients with HCC was carried out with a helical CT scanner. The contrast material was injected at a rate of 3ml/s , followed by sequential arterial , portal venous and equilibrium phase scans of the liver. The number of the detected lesions was calculated in each phase and the characterization of lesions in each phase was also observed. Results: The detection rate of lesions in arterial , portal venous and equilibrium phase scans was 91.9%, 76.9% and 78.8% respectively, the significant difference was found between arterial and portal venous phase or equilibrium phase, but no difference between the portal venous and equilibrium phases. Conclusion: The arterial phase scan has the greatest value in the detection of HCC, and there is no difference between the portal venous phase and equilibrium phase scans. The dual - phase scans (arterial and portal venous phase ) should be a standard and routine methods in the detection of HCC, and for atypical cases, the equilibrium phase scan is needed to aid in lesion's characterization.
出处
《重庆医科大学学报》
CAS
CSCD
2002年第3期312-314,共3页
Journal of Chongqing Medical University
关键词
螺旋CT
肝肿瘤
诊断
CT spiral
Liver neoplasms
Diagnosis
