高强度聚焦超声聚焦机构的研制

目的:研制能够产生高强度高精度超声聚焦机构。方法:通过采用仰卧姿势治疗方式利用缚腰袋和水压固定人体,减少呼吸运动对器官位置的影响,改善设备的舒适性;治疗过程中转动治疗头间接提高焦斑强度;通过合理结构设计提高焦斑精度。结果:体外牛肝试验表明:用8个Φ66探头组成的聚焦机构,单个探头输入电压为220v,声波照射的突发周期设置为200ms,持续时间为120ms,声波照射次数为10次,在肝囊下面2~3cm处形成成8×3mm米粒状坏死组织。结论:该多元自聚焦机构在一定的操作参数下得到较高质量的焦斑,如果采用较高质量的单探头,将会取得更好效果,估计活体实验效果优于采用俯卧治疗方式的设备。

Design of High Intensity Focused Ultrasound Transducer

Objective: To develop high intensity focused ultrasonic mechanism. Methods: Using the pressure of water in the waist locate the body, and treatment at supine posture, reduce to impact organs location of respiratory motion. Improve comfortableness of the equipment. During treatments, rotating the probe indirectly improve the intensity of the focal spot. Reasonable structural design improve accuracy of the spot. Results: the test of bovine in vitro showed: the mechanism consisted of eightφ66 probes in, input ...