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利用Test-Bolus技术分析行颈总动脉CTA检查时对比剂到达颈总动脉的达峰时间和峰值与个体因素之间的关系。 方法 对94例患者采用Test-Bolus技术行颈总动脉CTA检查,分析颈总动脉的时间-密度曲线,获得其达峰时间和峰值。采用单因素回归分析和多因素逐步回归法分析患者性别、年龄、身高等个体因素与对比剂到达颈总动脉的达峰时间和峰值的关系。 结果 根据患者个体相关因素得出多元回归方程:达峰时间...
评价应用缩短呼吸指令时间的团注示踪法(bolus-tracking)行大螺距双源CT冠状动脉成像(CCTA)获得图像的增强效果及有效辐射剂量。方法 收集临床疑诊为冠状动脉性心脏病的184例患者,随机平均分为两组:A组92例,采用大螺距前瞻性心电门控螺旋扫描(Flash Spiral)模式、缩短呼吸指令时间的bolus-tracking法扫描;B组92例,采用测试团注法(test-bolus)扫描。...
The relationship between pharmacokinetic variables and pharmacodynamic profiles of bolus versus continuous infusion of furosemide in critically ill patients
Furosemide Pharmacokinetics Pharmacodynamic Bolus Infusion
2010/1/5
In this investigation, the pharmacokinetic variables of continuous infusion and intermittent bolus injection of furosemide and the possible relationship between its pharmacokinetic characteristics and...
Bolus characteristics based on Magnetic Resonance Angiography
Bolus characteristics Magnetic Resonance Angiography
2010/2/26
Background
A detailed contrast bolus propagation model is essential for optimizing bolus-chasing Computed Tomography Angiography (CTA). Bolus characteristics were studied using bolus-timing datasets ...