1.1)东北大学医学与生物信息工程学院,沈阳 110169;2.2)Faculty of Physical Engineering, Kim Chaek University of Technology, Pyongyang, DPR of Korea;3.3)沈阳东软智能医疗科技研究院有限公司,沈阳 110015;4.4)东北大学生命科学与健康学院,沈阳 110169
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国家自然科学基金(61773110),中央高校基础科研基金业务费 (N2119008),沈阳市科学技术计划基金(20-201-4-10) 和沈阳东 软智能医疗科技研究院有限公司会员课题基金(MCMP062002) 资助项目。
1.1)School of Medical and Biological Information Engineering, Northeastern University, Shenyang 110169, China;2.2)Faculty of Physical Engineering, Kim Chaek University of Technology, Pyongyang, DPR of Korea;3.3)Neusoft Research of Intelligent Healthcare Technology, Co. Ltd, Shenyang 110015, China;4.4)College of Life and Health Sciences, Northeastern University, Shenyang 110169, China
This work was supported by grants from The National Natural Science Foundation of China (61773110), the Fundamental Research Funds for the Central Universities (N2119008), the Shenyang Science and Technology Plan Fund (20-201-4-10), and the Member Program of Neusoft Research of Intelligent Healthcare Technology, Co. Ltd. (MCMP062002).
超声干预治疗动脉粥样硬化性心血管疾病(atherosclerotic cardiovascular disease,ASCVD)是一种非侵入性治疗方法,其应用于临床治疗的前景广阔。超声波在身体组织中产生的机械、空化及生化等一系列作用可以有效清除血管中的斑块或血栓。但是,安全性是超声疗法应用于临床中亟需解决的首要问题。超声波在身体组织中的传播会引起组织损伤。另外,安全处理因超声刺激而产生的斑块或血栓碎片也是超声疗法应用中面临的挑战。除了确保安全性,合理制定治疗方案及治疗参数从而提高超声疗法疗效是超声疗法应用于临床中有待解决的重要问题。本文结合近年来超声干预治疗动脉粥样硬化性心血管疾病方面的各种临床、动物及体外模型实验研究结果,综述了超声干预治疗的机制、不同治疗方法和治疗参数的效果、如何确保安全性,以及提高超声疗法疗效需解决的一系列问题,进而提出可能的解决方案。
Based on the mechanical, cavitation and biochemical effects of ultrasound in the organs and tissues, ultrasound intervention can effectively ablate the plaques or thrombi in blood vessels. In this paper, we focused on the ultrasound intervention treatment of atherosclerotic cardiovascular disease (ASCVD) and reviewed the effect of treatment methods and parameters on the efficacy and safety, discussing some recent clinical, in vivo and in vitro experimental researches. Low-frequency (<300 kPa) ultrasound causes severe bleeding due to the generation of standing waves and large cavitation bubbles that induce high stress on the vessel wall. High frequencies (>3 MHz) lead to the attenuation of acoustic pressure, reducing the therapeutic efficacy. In general, the frequency of 0.8-2 MHz is used for clinical treatment while guaranteeing therapeutic efficacy and safety. In order to avoid side effects such as tissue damage and temperature rise at high intensity, low-intensity (0.7-1.25 W/cm2) ultrasound was employed in clinical trials. Ultrasound pulse parameters and exposure time should be determined in relation to the lesion, ultrasound intensity and frequency. In ultrasound therapy, the administration of drugs (rtPA, atorvastatin, tongxinluo, streptokinase, urokinase) and microbubbles (MBs) encapsulated by a lipid shell, such as ultrasound contrast agent (UCA), provides an opportunity to further enhance the therapeutic effects. Their concentration and dosage used in treatment varied depending on the treatment object, and they should be reasonably selected considering adverse effects including hemorrhage. The debris removed from plaques should be small enough (<10 μm) not to cause blockage of the capillaries. Otherwise, a suction technology that can collect the debris in the vessel must be incorporated with this ultrasound technology. In addition, it is necessary to combine a monitoring system that can evaluate and monitor the degree of tissue damage in real time during treatment. Magnetic resonance imaging (MRI) and computed tomography (CT) can be combined to detect the sign of bleeding, while a thermocouple, ultrasound imaging, infrared thermal imaging and MRI can be used to predict the thermal damage by measuring tissue temperature invasively or non-invasively.
李正革,徐礼胜,许家林,郭丽婷,崔慧颖,姚育东.超声治疗动脉粥样硬化性心血管疾病研究进展[J].生物化学与生物物理进展,2022,49(4):699-713
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