KA DUAL ENERGY X-RAY SOURCE FOR CORONARY ANGIOGRAPHY

提出了一种用于双能量减影的特征线X射线源 人体冠状动脉成像。 来源是基于 旋转金属化合物靶中K α线的产生 被高能电子束轰击 电子束产生于 一种廉价、紧凑的单谐振器RF加速器。 预测 可用的X射线能量密度与冠状动脉成像兼容 静脉注射碘造影剂后的动脉。 因此，在本发明中， 这项技术有可能大大降低患者的风险， 诊断和后续血管造影程序。 第一阶段将包括K X射线产额的实验研究， 低中子轰击靶产生的辐射的光谱纯度 电流、高能电子束和信噪比的计算机计算 用于X射线光谱优化的减影图像中的比率 特色 这项研究将最终在概念设计的一个 适合临床使用的K α X射线源。

A characteristic-line X-ray source is proposed for dual energy subtraction imaging of the human coronary arteries. The source is based on the production of the K alpha lines in a rotating metal compound target bombarded by a high energy electron beam. The electron beam is produced in an inexpensive, compact, single resonator RF accelerator. Predicted available X-ray fluences are compatible with imaging of the coronary arteries after an intravenous injection of iodine contrast agent. Thus, this technique has the potential for greatly reducing patient risks in diagnostic and follow-up angiography procedures. Phase I will comprise an experimental investigation of K X-ray yields and spectral purity of the radiation produced from a target bombarded by a low current, high energy e-beam, and computer calculations of signal to noise ratio in the subtraction image for optimization of X-ray spectral characteristics. The study will culminate in the conceptual design of a K alpha X-ray source suitable for clinical use.