A dual-band wideband patch antenna for intracranial hemorrhage detection(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2023年第6期
- Page:
- 720-726
- Research Field:
- 医学信号处理与医学仪器
- Publishing date:
Info
- Title:
- A dual-band wideband patch antenna for intracranial hemorrhage detection
- Author(s):
- BAI Zelin1; DENG Huangsen1; LI Haocheng2; CHEN Haojia3; CHEN Mingsheng1
- 1. Teaching and Research Section of Electrical Engineering, Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing 400038, China 2. Department of Medical Engineering, General Hospital of Central Theater Command, Wuhan 430070, China 3. Teaching and Research Section of Physics, School of Basic Medicine, Army Medical University, Chongqing 400038, China
- Keywords:
- Keywords: intracranial hemorrhage microwave detection head model simulation antenna
- PACS:
- R318.6
- DOI:
- DOI:10.3969/j.issn.1005-202X.2023.06.009
- Abstract:
- Abstract: Objective To design and manufacture a wideband microwave antenna for intracranial hemorrhage detection. Methods The simulation software was used to optimize the antenna structure and parameters. The simulation experiment of intracranial hemorrhage detection was carried out using the electromagnetic simulation model of human head for detecting different amount of bleeding (14.1, 33.5 and 65.4 mL). The physical experiments were conducted with the actually manufactured antenna, and the S11 of 3 liquids with different dielectric constants, namely water, 95% alcohol and vegetable oil, were measured at different volumes (0-10 mL). Results In the simulation experiment of intracerebral hemorrhage, the S11 was statistically different in 3 different degrees of intracerebral hemorrhage at the working frequency bands of the antenna (2.03-2.30 GHz, 2.90-3.02 GHz) (P<0.05), indicating that the antenna could detect different degrees of intracerebral hemorrhage. In the physical experiment, at the working frequency band of the actual antenna (2.00-2.27 GHz, 2.85-2.90 GHz), the S11 amplitudes of 3 liquids differed significantly, and the largest difference occurred at the trough position of the spectrum, and the larger the liquid volume was, the greater the difference of S11 amplitude was. The observation on 2.17 GHz data showed that the S11 amplitudes of the 3 liquids changed with the liquid volume, and that there was significant difference in S11 amplitude at 1-10 mL (P<0.05), which demonstrated that the antenna could detect the changes in dielectric constant and volume of materials. Conclusion The microwave patch antenna has the potential for intracranial hemorrhage detection.
Last Update: 2023-06-28