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Low Frequency Ultrasound Transcranial Imaging with Coherent Compounding of Diverging Chirp Waves
Bai, Chen1,2; Ji, Meiling1; Qiao, Xiaoyang1; Sang, Yuchao1; Xu, Shanshan1; Wan, Mingxi1
2018-12-17
Conference Name2018 IEEE International Ultrasonics Symposium, IUS 2018
Source Publication2018 IEEE International Ultrasonics Symposium, IUS 2018
Volume2018-October
Conference Date2018-10-22
Conference PlaceKobe, Japan
PublisherIEEE Computer Society
Contribution Rank1
AbstractFor transcranial imaging based on contrast microbubbles, the acoustic window is limited to the temporal bone with strong attenuation. Consequently, the images obtained with conventional compounded plane waves (CPW)transmission is often not good in contrast-to-noise ratio (CNR). This is partly attribute to that short pulse commonly has low ability to penetrate the temporal bone. And moreover, CPW will raise a shadow area in the relatively deep field where beams are not overlapped. Although this can be improved by increasing the numbers of transmitting angles, it will reduce the frame rate. Therefore, to realize improvement both in detective sensitivity of microbubbles and CNR in transcranial imaging, the compounding of diverging chirp waves (CDCW), which combined the low frequency signals and chirp excitation with compounded diverging waves imaging, was investigated in this study. After confirming that the deflection angle of 30° and the angle interval of 2° should provide satisfactory imaging result, a phantom experiment with the 3-D printed skull and blood vessel model was performed and compared with CPW method. The results proved that CDCW can improve 2.95 dB of CNR with larger perspective, which can be an effective method for the future study of transcranial ultrasound imaging. © 2018 IEEE.
Department瞬态光学技术国家重点实验室
DOI10.1109/ULTSYM.2018.8580059
Indexed ByEI
ISBN9781538634257
Language英语
ISSN19485719;19485727
EI Accession Number20190506443728
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/31238
Collection瞬态光学技术国家重点实验室
Affiliation1.School of Life Science and Technology, Xi'An Jiaotong University, Department of Biomedical Engineering, Xi'an, China;
2.State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precisioon Machanics, Chinese Academy of Sciences, Xian, China
Recommended Citation
GB/T 7714
Bai, Chen,Ji, Meiling,Qiao, Xiaoyang,et al. Low Frequency Ultrasound Transcranial Imaging with Coherent Compounding of Diverging Chirp Waves[C]:IEEE Computer Society,2018.
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