延长导管及不同型号留置针对MR增强对比剂注射总量的影响

发布时间：2018-03-07 14:32

本文选题：延长导管　切入点：留置针　出处：《放射学实践》2017年09期 　论文类型：期刊论文

【摘要】：目的:探讨不同型号留置针及高压注射器延长导管对MR增强对比剂注射总量的影响。方法:使用MED TRON AG高压注射器注射对比剂(钆贝葡胺注射液),配合使用压力型微量泵延长管和BD pegasus飞玛TM密闭式18G、20G、22G留置针。MR对比剂预射总量分别设定为5mL、20mL,流率分别设定为2.0mL/s、3.0mL/s、4.0mL/s,压力限制值设定为21Bar,65mL容量负载注射器连接MR-带阀管路系统。本研究分为A、B两组,A组高压注射器连接MR-带阀管路系统和压力型微量泵延长管,不连接注射留置针;B组高压注射器连接MR-带阀管路系统+压力型微量泵延长管和18G、20G、22G留置针。A、B两组均在三种不同注射流率情况下分别评估两种预设对比剂注射剂量,分析延长管和三种规格留置针对注射MR对比剂总量的影响。结果:A组规定时间内以三种不同流率注射时,对比剂注射总量和预设总量相同;B组在同一注射量和同一延长管、分别连接三种规格留置针的情况下,以三种不同流率注射时注射总量和预设总量相同。结论:常规注射压力、注射流率下,一定容积的延长管和18G、20G、22G留置针均不会影响预定对比剂注射总量,建议使用22G留置针。
[Abstract]:Objective: to investigate the effect of different types of indwelling needle and high pressure syringe on the total volume of Mr contrast injection. Methods: MED TRON AG high pressure injector was used to inject contrast agent (gadolinium meglumine injection) in combination with pressure. Type V micropump extension tube and BD pegasus Flying MA TM closed 18G / 20G / 22G indwelling needle. Mr contrast agent pre-injection amount was set to 5 mL / 20 mL respectively, flow rate was set to 2.0 mL / s 3.0 mL / s 4.0 mL / s respectively, pressure limit value was set to 21 Bar65 mL capacity load injector to connect MR-valve pipeline system. A high pressure syringe is divided into two groups: group A, high pressure syringe, MR-valve pipeline system and pressure type micropump extension pipe. Two preset injection doses of MR-valve pipeline system pressure type micropump extension tube and 18G ~ (20) G ~ (20) G ~ (22) G indwelling needle 路A ~ (2 +) B group were evaluated under three different injection flow rates, respectively, in group B high pressure syringe without connection to injectable indwelling needle. The effect of extension tube and three specifications indwelling on the total amount of Mr contrast agent injection was analyzed. Results when three different flow rates were used in group A, the total amount of contrast agent injection was the same as that of group B in the same injection volume and the same extension tube. When three kinds of indwelling needles are connected separately, the total amount of injection is the same as that of preset amount when injected with three different flow rates. Conclusion: under the conventional injection pressure, the injection flow rate, The fixed volume of the extension tube and the 18G / 20g / 22G indwelling needle will not affect the total amount of the predetermined contrast agent injection, so it is recommended to use the 22G indwelling needle.
【作者单位】：华中科技大学同济医学院附属同济医院放射科;
【分类号】：R445.2

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