头颈联合血管造影自动与手动触发辐射剂量对比的应用研究

摘要

目的 通过头颈联合CT血管造影(Computed Tomographic Angiography,CTA)自动与手动触发时辐射剂量不同的对比,探讨低辐射造影方法.方法 选择60名行头颈联合CTA的患者分成A、B两组.A组选择用管电压100 mV,管电流350 mA,注射流率4 mL/s,手动触发做头颈联合CTA所得的辐射剂量;B组选择用管电压100 mV,管电流350 mA,注射流率4 mL/s,通过检测层自动触发做头颈联合CTA所得的辐射剂量.结果 60名患者所做的头颈联合CTA颈动脉及其分支均可清晰显示,完全能满足医学诊断要求.结论 手动触发做头颈联CTA所得的辐射剂量都大于自动触发做头颈联合CTA所得的辐射剂量.%Objective This paper aims to discuss the low radiography methods by comparison of radiotherapy dose between head and neck combined with CT angiography (CTA) automatic and manual triggering. Methods 60 patients with head and neck CTA were divided into A and B groups. Group A selected tube voltage 100 mV, tube current 350 mA, injection flow rate of 4 mL/s, manual trigger at head and neck CTA radiation doses; Group B selected tube voltage 100 mV, tube current 350 mA, injection flow rate of 4 mL/s, triggered automatically by the detection layer at the head and neck CTA doses of radiation. Results 60 patients of head and neck CTA carotid artery and its branches could all clearly displayed and be able to meet the medical diagnostic requirements. Conclusion Manual trigger at the head and neck CTA doses of radiation are greater than the automatic trigger for head and neck CTA radiation dose.