IMAGING SCIENCE AND PHOTOCHEMISTRY ›› 2022, Vol. 40 ›› Issue (5): 997-1003.DOI: 10.7517/issn.1674-0475.220338

• Review and Articles • Previous Articles     Next Articles

Study on an Internal Ultrasound Therapy Method Based on the Chirp-coded Excitation

CHEN Beiyi1,2, NING Chuanlong2, ZHANG Rui1,2, HUANG Wenchang1,2, XU Jie2, SHAO Weiwei2, CUI Yaoyao2   

  1. 1. School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Suzhou 215000, Jiangsu, P. R. China;
    2. Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, Jiangsu, P. R. China
  • Received:2022-04-13 Published:2022-09-13

Abstract: Ultrasound ablation is a method of treating cancer and other diseases which has received a lot of attention. The paper put forward an internal ultrasound therapy method based on Chirp-coded excitation which was studied in order to expand the therapeutic area and to reduce treatment duration. The self-made experimental platform and driving system were used in phantom experiments. The results of polyacrylamide (PAA) phantom experiments showed that, compared with constant-frequency excitation, Chirp-coded excitation can expand the effective treatment area of single ablation. On the basis of ensuring the range of ablation, the overall treatment duration can be effectively reduced.

Key words: internal ultrasound, ultrasound ablation, signal modulation, thermal effect, cavitation effect