| 陈寒,陈佳杰,张亚斌,雷海涛,张建波,周红斌,颜林枫,崔光彬,贺延莉.前后复合双流注射技术联合低剂量扫描用于头颈部CT血管造影[J].中国医学影像技术,2023,39(8):1239~1243 |
| 前后复合双流注射技术联合低剂量扫描用于头颈部CT血管造影 |
| Pre-and post-composite dual-flow injection combined with low-dose scanning in head and neck CT angiography |
| 投稿时间：2023-02-10 修订日期：2023-06-14 |
| DOI：10.13929/j.issn.1003-3289.2023.08.026 |
| 中文关键词: 脑血管造影术 图像质量 双流注射技术 |
| 英文关键词:cerebral angiography image quality dual-flow injection technique |
| 基金项目:唐都医院创新发展基金资助项目(2018LCYJ005)。 |
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| 中文摘要: |
| 目的 观察前后复合双流注射技术联合低剂量扫描用于头颈部CT血管成像(CTA)的价值。方法 收集120例接受头颈部CTA检查患者,将其分为A、B、C组,每组40例,分别接受常规对比剂注射和扫描方案(A组,管电压120 kV、管电流150 mAs)、对比剂前后复合双流注射和常规扫描方案(B组,同A组)及对比剂前后复合双流注射和低剂量扫描方案(C组,管电压100 kV、自动管电流);比较3组间图像质量客观评价结果、主观评分及有效剂量(ED)的差异。结果 C组大脑中动脉及颈总动脉CT值高于A组和B组(P均＜0.05),A组与B组差异均无统计学意义(P均＞0.05);上矢状窦及右锁骨下静脉CT值在C组低于A组而高于B组(P均＜0.05)、在A组高于B组(P均＜0.05);3组间左、右颈静脉CT值及颈动脉信噪比差异均无统计学意义(P均＞0.05)。3组间图像整体主观评分差异无统计学意义(P=0.80);B组和C组右锁骨下静脉和头部动脉小分支主观评分均高于A组(P均＜0.05),B组与C组差异均无统计学意义(P均＞0.05)。C组ED小于A、B组(P均＜0.05)。结论 前后复合双流技术联合低剂量扫描用于头颈部CTA可在不影响图像质量的同时降低辐射剂量。 |
| 英文摘要: |
| Objective To observe the value of pre-and post-composite dual-flow injection combined with low-dose scanning in head and neck CT angiography (CTA). Methods Totally 120 patients who underwent head and neck CTA were recruited and divided into A, B, and C groups (each n=40). Patients in group A underwent conventional contrast injection protocol and scanning protocol (tube voltage 120 kV, tube current 150 mAs), in group B underwent contrast pre-and post-composite dual-flow injection and conventional scanning protocol (same tube voltage and current as group A), while those in group C underwent pre-and post-composite dual-flow injection and low-dose scanning protocol (tube voltage 100 kV, automatic tube current). Objective evaluation and subjective scoring of imaging quality and patients effective dose (ED) were compared among groups. Results CT values of middle cerebral artery and common carotid artery in group C were higher than those in group A and group B (all P＜0.05), but in group A and group B were not significant (all P＞0.05). CT values of the superior sagittal sinus and right subclavian vein in group C were lower than those in group A and higher than those in group B (both P＜0.05), while in group A were higher than those in group B (both P＜0.05). There was no significant difference of CT values of the left and right jugular vein, nor of signal-to-noise ratio of carotid artery among 3 groups (all P＞0.05). No significant difference of subjective scores of overall imaging quality was found among 3 groups (P=0.80), while subjective scores of imaging quality of the right subclavian vein and small branches of cephalic arteries in group B and C were higher than those in group A (both P＜0.05), and in group B group C were not significantly different (both P＞0.05). Patients ED in group C were smaller than that in group A and B (both P＜0.05). Conclusion Pre-and post-composite dual-flow injection combined with low-dose scanning for head and neck CTA could reduce patients' radiation dose without affecting image quality. |
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