Objective: To contrast data of reconstruction in lung helical scan and general CT scan, to evaluate the value of its clinical application.
目的：对肺部螺旋CT扫描重建资料与CT平扫进行对比，探讨临床应用价值。
This paper proposed a modified ordered subsets expectation maximization(OSEM) reconstruction based on the direct helical half-scan data.
提出了基于直接螺旋半扫描数据的有序子集期望最大化（OSEM）迭代重建。
Helical CT scan images were obtained in the vascular phase and the maximal hepatic enhancement phase.
对所有患者均进行双螺旋CT扫描，分别获取血管相和肝脏最大强化相影像。
Objective: To evaluate multiphasic enhancement of helical ct scan in the diagnosis of small renal cell carcinoma (RCC).
目的：评价螺旋CT多期增强扫描在小肾癌诊断中的价值。
Objective: To assess the value of clinical application in lung general investigation with 16-slice helical ct low-dose scan.
目的：探讨16层螺旋CT低剂量扫描在肺普查中的应用价值。
Objective To investigate the feasibility of low-do se single-slice helical ct in pulmonary ct scan and evaluate the clinical application.
目的探讨单排螺旋CT行肺低剂量扫描的技术可行性及其应用价值。
Objective the arterial phase and portal venous phase scan with helical ct was applied to analyze the characteristic of small hepatocellular carcinomas (SHCC).
目的应用螺旋CT行肝动脉期与门静脉期双期扫描分析小肝癌的诊断特征。
Objective to explore the value of helical ct scan to the diagnosis of ureteral calculus.
目的评价螺旋CT平扫对输尿管结石诊断的价值。
Materials and methods:31 cases of constrictive pericarditis proved by operation underwent helical CT scan. the CT features were analyzed and compared with operation findings.
方法：对31例手术病理证实的缩窄性心包炎患者进行螺旋CT检查，分析其CT表现特点并和手术发现对比。
When enhancing, gall bladder carcinoma had a great and long-timed enhancement. Conclusion : The multi-phase helical CT scan plays an important rol…
结论：螺旋CT多期增强在胆囊癌的定性诊断及了解胆囊癌的侵犯范围上具有重要作用。
This paper discussed one type scan-aborted malfunction which is caused by carbon-brushes' contact-capability abated in the Helical CT, and summarized carbon-brushes general maintenance method.
探讨螺旋CT的滑环接触性能变差后常见的扫描中断故障，并结合实践总结出了滑环维护保养的一般方法。
This paper discussed one type scan-aborted malfunction which is caused by carbon-brushes' contact-capability abated in the Helical CT, and summarized carbon-brushes general maintenance method.
探讨螺旋CT的滑环接触性能变差后常见的扫描中断故障，并结合实践总结出了滑环维护保养的一般方法。
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