caa a22 4500 605539413 CHVBK 20210128100906.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10396-014-0562-8 doi (NATIONALLICENCE)springer-10.1007/s10396-014-0562-8 Experimental system for in-situ measurement of temperature rise in animal tissue under exposure to acoustic radiation force impulse [Elektronische Daten] [Naotaka Nitta, Yasunao Ishiguro, Hideki Sasanuma, Nobuyuki Taniguchi, Iwaki Akiyama] Purpose: Acoustic radiation force impulse (ARFI) has recently been used for tissue elasticity measurement and imaging. On the other hand, it is predicted that a rise in temperature occurs. In-situ measurement of temperature rise in animal experiments is important, yet measurement using thermocouples has some problems such as position mismatch of the temperature measuring junction of the thermocouple and the focal point of ultrasound. Therefore, an in-situ measurement system for solving the above problems was developed in this study. Methods: The developed system is composed mainly of an ultrasound irradiation unit including a custom-made focused transducer with a through hole for inserting a thin-wire thermocouple, and a temperature measurement unit including the thermocouple. Results: The feasibility of the developed system was evaluated by means of experiments using a tissue-mimicking material (TMM), a TMM containing a bone model or a chicken bone, and an extracted porcine liver. The similarity between the experimental results and the results of simulation using a finite element method (FEM) implied the reasonableness of in-situ temperature rise measured by the developed system. Conclusion: The developed system will become a useful tool for measuring in-situ temperature rise in animal experiments and obtaining findings with respect to the relationship between ultrasound irradiation conditions and in-situ temperature rise. The Japan Society of Ultrasonics in Medicine, 2014 Acoustic radiation force impulse nationallicence Temperature rise nationallicence In-situ measurement system nationallicence Nitta Naotaka Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, 305-8564, Tsukuba, Ibaraki, Japan aut Ishiguro Yasunao Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke, Tochigi, Japan aut Sasanuma Hideki Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke, Tochigi, Japan aut Taniguchi Nobuyuki Department of Clinical Laboratory Medicine, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke, Tochigi, Japan aut Akiyama Iwaki Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara Miyakodani, 610-0394, Kyotanabe, Kyoto, Japan aut Journal of Medical Ultrasonics Springer Japan 42/1(2015-01-01), 39-46 1346-4523 42:1<39 2015 42 10396 https://doi.org/10.1007/s10396-014-0562-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10396-014-0562-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nitta Naotaka Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, 305-8564, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 700 1- Ishiguro Yasunao Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke, Tochigi, Japan aut NATIONALLICENCE 700 1- Sasanuma Hideki Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke, Tochigi, Japan aut NATIONALLICENCE 700 1- Taniguchi Nobuyuki Department of Clinical Laboratory Medicine, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke, Tochigi, Japan aut NATIONALLICENCE 700 1- Akiyama Iwaki Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara Miyakodani, 610-0394, Kyotanabe, Kyoto, Japan aut NATIONALLICENCE 773 0- Journal of Medical Ultrasonics Springer Japan 42/1(2015-01-01), 39-46 1346-4523 42:1<39 2015 42 10396