Novel reconstruction algorithm of magnetoacoustic tomography based on ring transducer array for acoustic speed inhomogeneous tissues

doi:10.1002/mp.14210

CASIA OpenIR > 多模态人工智能系统全国重点实验室 > 生物识别与安全技术

	Novel reconstruction algorithm of magnetoacoustic tomography based on ring transducer array for acoustic speed inhomogeneous tissues
	Wang, Lili 1,2; Liu, Guoqiang 1,2; Chen, Siping 3; Chen, Xin 3; Ma, Xibo2,4 ; Xia, Hui 1
发表期刊	MEDICAL PHYSICS
ISSN	0094-2405
	2020-05-23
页码	12
通讯作者	Xia, Hui(xi-ahui@mail.iee.ac.cn)
摘要	Purpose Magnetoacoustic tomography with magnetic induction (MAT-MI) is a technique that utilizes the acoustic signals induced by magnetic stimulation to reconstruct the electrical impedance distribution in biological tissues. Most algorithms ignored the fact that acoustic properties in human tissues are heterogeneous, which lead to distortion and blurring of small reconstructed objects. In this study, a novel algorithm is proposed for exact reconstruction of the sound source distribution in acoustic heterogeneous tissues. Methods Based on the ring transducer array, we develop an algorithm which combines algebraic reconstruction technique (ART) and time reversal method. Different to existing reconstruction methods, the ultrasonic transmission tomography (UTT) and the MAT-MI can be completed in same system, which decreases the system complexity. The sound velocity distribution is reconstructed with the ART so that the propagation time of the magnetoacoustic signals in the heterogeneous tissue is corrected. And then, the sound source image is reconstructed based on the time reversal method from new sound pressure data. Both numerical simulations and phantom experiments are established to validate the proposed method. Results Compared with the results without consideration of the variation on acoustic speed, sound sources reconstructed by our method are more consistent with the model in terms of size and shape. Conclusions The novel algorithm can be used to reconstruct the high-accuracy image of MAT-MI sound source in the sound velocity inhomogeneous media. In addition, this method is applicable to scenarios that the prior knowledge of the imaging targets is unknown. The signal acquisition time of MAT-MI in acoustically heterogeneity media is greatly reduced due to the introduction of ring transducer array into the imaging system. Therefore, our method will promote the application of MAT-MI in noninvasive early diagnosis of tumor for preclinical study.
关键词	acoustic heterogeneity bioimpedance image reconstruction magnetoacoustic tomography with magnetic induction (MAT-MI)
DOI	10.1002/mp.14210
关键词[WOS]	THERMOACOUSTIC TOMOGRAPHY ; DIELECTRIC-PROPERTIES ; COMPUTED-TOMOGRAPHY ; BIOLOGICAL TISSUES ; MAGNETIC INDUCTION
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[61771448] ; National Natural Science Foundation of China[61427806] ; National Natural Science Foundation of China[51937010] ; National Natural Science Foundation of China[81871442] ; Chinese Academy of Sciences[ZDKYYQ20190002]
项目资助者	National Natural Science Foundation of China ; Chinese Academy of Sciences
WOS研究方向	Radiology, Nuclear Medicine & Medical Imaging
WOS类目	Radiology, Nuclear Medicine & Medical Imaging
WOS记录号	WOS:000534819600001
出版者	WILEY
七大方向——子方向分类	医学影像处理与分析
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/39527
专题	多模态人工智能系统全国重点实验室_生物识别与安全技术
通讯作者	Xia, Hui
作者单位	1.Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Shenzhen, Guangdong Key Lab Biomed Measurements & Ultrasoun, Shenzhen 518061, Peoples R China 4.Chinese Acad Sci, Inst Automat, CBSR&NLPR, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lili,Liu, Guoqiang,Chen, Siping,et al. Novel reconstruction algorithm of magnetoacoustic tomography based on ring transducer array for acoustic speed inhomogeneous tissues[J]. MEDICAL PHYSICS,2020:12.
APA	Wang, Lili,Liu, Guoqiang,Chen, Siping,Chen, Xin,Ma, Xibo,&Xia, Hui.(2020).Novel reconstruction algorithm of magnetoacoustic tomography based on ring transducer array for acoustic speed inhomogeneous tissues.MEDICAL PHYSICS,12.
MLA	Wang, Lili,et al."Novel reconstruction algorithm of magnetoacoustic tomography based on ring transducer array for acoustic speed inhomogeneous tissues".MEDICAL PHYSICS (2020):12.