CAJ | 학술논문

目的：观察64排VCT低电压扫描技术用于头颈部联合CTA检查的效果并进一步探讨其临床意义。方法将66例头颈部血管成像受检者随机分成A、B两组，A组30例,B组36例，其中A组采用常规曝光条件(120kV,400mAs),B组采用低电压技术(100kV,400mAs)。对两组受检者动脉血管的显影强度、图像噪声、头颈部动脉血管图像质量以及辐射剂量进行分析评价。结果 B组图像血管的显影强度(CT平均值)、图像噪声较A组略高，但两组检查的图像质量分级无统计学意义；而B组的辐射剂量较A组明显降低，B组头颈部联合CTA检查的平均辐射剂量(3.16mGy)比A组(4.92mGy)约降低36%。结论应用64排VCT头颈部联合CTA低剂量扫描技术,能够在保证图像质量的前提下降低患者所接受的辐射剂量,是一种较有临床意义的影像学检查方法。
목적：관찰64배VCT저전압소묘기술용우두경부연합CTA검사적효과병진일보탐토기림상의의。방법장66례두경부혈관성상수검자수궤분성A、B량조，A조30례,B조36례，기중A조채용상규폭광조건(120kV,400mAs),B조채용저전압기술(100kV,400mAs)。대량조수검자동맥혈관적현영강도、도상조성、두경부동맥혈관도상질량이급복사제량진행분석평개。결과 B조도상혈관적현영강도(CT평균치)、도상조성교A조략고，단량조검사적도상질량분급무통계학의의；이B조적복사제량교A조명현강저，B조두경부연합CTA검사적평균복사제량(3.16mGy)비A조(4.92mGy)약강저36%。결론응용64배VCT두경부연합CTA저제량소묘기술,능구재보증도상질량적전제하강저환자소접수적복사제량,시일충교유림상의의적영상학검사방법。
Objective To investigate the application of 64-row low-dose VCT technology in CTA of head and neck and further explore its clinical application value. Methods 66 patients undertaking head and neck CTA scanning were randomly divided into groups A and B, Group A 30 cases, Group B 36 cases. Group A used conventional exposure conditions (120kV, 400mAs) while Group B used low dose (100kV, 400mAs). The developing strength, image noise, head and neck arteries image quality and radiation dose rates of the two groups were analyzed. Results the images of blood vessels developing strength (CT average)、The average signal to noise ratio in Group B is slightly higher than those in Group A, but Group A and Group B image quality with no statistical significance; while the radiation dose was significantly lower in Group B than in Group A , the average radiation dose in CTA of head and neck in Group B was reduced by 36% (Group B, 4.92mGy and Group A, 3.16 mGy). Conclusion 64-row low-dose scanning technology in CTA of head and neck can be applied to reduce the radiation dose received by the patient without compromising image quality. It is a scanning method with significant clinical application value.