Strategies for Improved Shock Wave Lithotripsy

在我们的上一次资助期间，我们帮助碎石界认识到SWL不良影响的严重性，并为了解冲击波作用于结石粉碎和组织损伤的物理声学机制做出了重大贡献。然而，从我们在这一领域的角度来看，我们仍有许多工作需要完成。特别是，泌尿科现在面临着一个新的两难境地，碎石术没有好转，碎石机本身已经成为一个危险因素。我们由科学家/临床医生组成的多学科团队是解决这些问题的理想选择。本延长提案制定了一个由四个互动、协作项目组成的计划，以实现以下目标。我们会： 1.找出并隔离增加SWL不良反应风险的因素。 2.定义对导致长期肾脏损害的短波的组织反应。 3.制定治疗策略(保护机制)，以减少碎石术中的肾脏损伤。 4.为安全有效的短波测井建立短波参数(速率、电压、个数)的选择标准。 5.评估第三代电磁碎石机的有效性和安全性，作为确定如何改善这些设备的SWL的步骤。 6.开发实时成像和空化检测，使泌尿科医生能够在SWL过程中监测组织损伤和结石粉碎。 7.测试用于控制空化的新概念短波碎石(双脉冲碎石术)，以增强结石破碎并将组织损伤降至最低。 8.明确SWL碎石机理，完善碎石机波形，实现高效碎石。 9.建立计算模型，模拟冲击波作用(虚拟碎石机)的关键特征，并为系统改进SWL提供相关预测。 我们的主要目标是改进冲击波碎石术--使碎石术对所有患者都更安全、更有效。

During our last funding period, we have helped the lithotripsy community recognize the severity of SWL adverse effects, and we have made a significant contribution to the understanding of the physical acoustic mechanisms of shock wave action involved in stone comminufion and tissue injury. However, from our perspective in this field we see there is still much that needs to be accomplished. In particular, the urology community is now faced with a new dilemma, in that lithotripsy is not getting better and the lithotripter itself has become a risk factor. Our multidisplanary team of scientist/clinicians is ideally situated to address these issues. The present renewal proposal has developed a plan of four interactive, collaborative projects to achieve the following goals. We will: 1. Identify and isolate factors that increase the risk of adverse effects in SWL. 2. Define the tissue response to SW's that leads to long-term renal damage. 3. Develop treatment strategies (protective mechanisms) that reduce the renal trauma suffered during lithotripsy. 4. Establish criteria for the selection of SW parameters (rate, voltage, number) for safe and effective SWL. 5. Evaluate the efficacy and safety of 3rd generation electromagnetic lithotripters, as a step toward determining how to improve SWL performed with these devices. 6. Develop real-time imaging and cavitation detection to allow the urologist to monitor tissue damage and stone comminution during SWL. 7. Test a new concept in SW delivery (dual pulse lithotripsy) for cavitation control to enhance stone breakage and minimize tissue injury. 8. Determine the mechanics of stone failure in SWL so that the lithotripter waveform can be perfected for efficient stone breakage. 9. Establish computational models that will simulate the critical features of shock wave action (the virtual lithotripter) and allow relevant predictions for systematic improvement of SWL. Our main goal is to improve shock wave lithotripsy - to make lithotripsy safer and more efficient for all patients.