红外热成像聚焦超声声场测量方法综述
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摘要
基于红外热成像技术对聚焦超声声场进行快速、定量测量的方法具有扫描速度快、空间分辨率高、适用频率范围广等优点。但是由于红外线的穿透能力限制,在红外摄像仪和超声吸收体之间需要一个空气层,因此使得超声吸收体内部声场较为复杂,目前已有三种模型对此进行描述,且都得到了相应的实验验证。本文通过分析基于三种模型的超声吸收体内部声场分布和声强估计方法,对其进行了较为详细的描述。为进一步研究该项技术提供了理论参考依据。
The method of measuring focused ultrasonic field based on infrared thermal imaging technique has the advantages of high scanning speed, high spatial resolution and wide frequency range. But, due to the limitation of infrared penetration ability, an air layer is needed between infrared camera and ultrasonic absorbers, which makes the internal sound field of ultrasonic absorber more complex. Currently there are three models to describe the internal sound field, and the corresponding experimental verification is obtained. In this paper, the internal sound field distribution and the sound intensity estimation method of the ultrasonic absorber based on the three models are analyzed, which provides a theoretical reference for further research on this technology.
The method of measuring focused ultrasonic field based on infrared thermal imaging technique has the advantages of high scanning speed, high spatial resolution and wide frequency range. But, due to the limitation of infrared penetration ability, an air layer is needed between infrared camera and ultrasonic absorbers, which makes the internal sound field of ultrasonic absorber more complex. Currently there are three models to describe the internal sound field, and the corresponding experimental verification is obtained. In this paper, the internal sound field distribution and the sound intensity estimation method of the ultrasonic absorber based on the three models are analyzed, which provides a theoretical reference for further research on this technology.
引文
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[2]YEH R,STEINMAN J,LUK L,et al.Imaging of pancreatic cancer:what the surgeon wants to know[J].Clinical Imaging,2017,42:203-217.
[3]LIEBERMAN N,VITANZA N A,CRANE C A.Immunotherapy for brain tumors:understanding early successes and limitations[J].Expert Review of Neurotherapeutics,2018,18(6):251-259.
[4]van VELTHOVEN R M M,AOUN F,MARCELIS Q,et al.Aprospective clinical trial of HIFU hemiablation for clinically localized prostate cancer[J].Prostate Cancer and Prostatic Diseases,2016,19(1):79-83.
[5]TOMASIAN A,WALLACE A N,HILLEN T J,et al.Percutaneous ablation in painful bone tumors[J].Seminars in Musculoskeletal Radiology,2016,20(5):472-485.
[6]ten EIKELDER H,BO?NA?KI D,ELEVELT A,et al.Modelling the temperature evolution of bone under high intensity focused ultrasound[J].Physics in Medicine and Biology,2016,61(4):1810.
[7]SPADI R,BRUSA F,PONZETTI A,et al.Current therapeutic strategies for advanced pancreatic cancer:A review for clinicians[J].World journal of clinical oncology,2016,7(1):27-43.
[8]SHIM J,STARUCH R M,KORAL K,et al.Pediatric sarcomas are targetable by MR-Guided high intensity focused ultrasound(MR-HIFU):Anatomical Distribution and Radiological Characteristics[J].Pediatric blood&cancer,2016,63(10):1753-1760.
[9]YU Y,SHEN G,ZHOU Y,et al.Quantitative assessment of acoustic intensity in the focused ultrasound field using hydrophone and infrared imaging[J].Ultrasound in Medicine&Biology,2013,39(11):2021-2033.
[10]KHOKHLOVA V A,SHMELEVA S M,GAVRILOV L R,et al.Infrared mapping of ultrasound fields generated by medical transducers:Feasibility of determining absolute intensity levels[J].J Acoust Soc Am.,2013,134(2):1586-1597.
[11]HALLER J,JENDERKA K V,SEIFERT F,et al.A comparison of three different types of temperature measurement in HITUfields[J].Metrologia,2012,49(5):S279-S281.
[12]SHAW A,HODNETT M.Calibration and measurement issues for therapeutic ultrasound[J].Ultrasonics,2008,48(4):234-252.
[13]GIRIDHAR D,ROBINSON R A,LIU Y,et al.Quantitative estimation of ultrasound beam intensities using infrared thermography-Experimental validation[J].J Acoust Soc Am.,2012,131(6):4283-4291.
[14]SHAW A,KHOKHLOVA V,BOBKOVA S,et al.Calibration of HIFU intensity fields measured using an infra-red camera[J].Journal of Physics:Conference Series,2011,279:012019.
[15]MYERS M R,GIRIDHAR D.Theoretical framework for quantitatively estimating ultrasound beam intensities using infrared thermography[J].J Acoust Soc Am.,2011,129(6):4073-4083.
[16]万明习.生物医学超声学[M].北京:科学出版社,2010.WAN Minxi.Biomedical Ultrasonics[M].BeiJing:China Science Publishing,2010.
[17]杜功焕,朱哲民,龚秀芬.声学基础[M].第2版.南京:南京大学出版社,2001.DU Gonghuan,ZHU Zemin,GONG Xiufeng.Fundamentals of Acoustics[M].Second Edition,NanJing:NanJing University Press.