Generic Wideband Phantom Design Methodology for Microwave Medical Applications

Autor:	Yifan Chen, Xiaoyou Lin, Zheng Gong, Michael J. Cree, Kunlun Wu
Rok vydání:	2021
Předmět:	Materials science Microwave imaging Logarithm Human head Frequency band Acoustics Physics::Medical Physics Electrical and Electronic Engineering Wideband Gradient descent Microwave Imaging phantom
Zdroj:	IEEE Antennas and Wireless Propagation Letters. 20:1488-1492
ISSN:	1548-5757 1536-1225
DOI:	10.1109/lawp.2021.3088449
Popis:	This letter proposes a general formula to determine the amount of compound required to produce water–oil-based phantoms that can emulate the electrical properties of a specific body tissue at microwave frequencies. The existing process to produce such a phantom usually involves mixing together a number of different materials, where the proportion of each compound needs to be known a priori to reproduce the dielectric properties of a specific tissue. In this letter, we first investigate the dielectric variation of the mixture by changing the proportion of each compound over a wide frequency band. By utilizing Lichtenecker's logarithmic mixture formula, the gradient descent iterative optimization method is applied to train the relations obtained, and a formula that determines the amount of each compound required to produce a phantom given a specific tissue type is derived. The formula is verified by constructing representative tissues of the human head, with the durability and fidelity of the produced phantom also analyzed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d5bb582b07deee1991aff1bc6c507353 https://doi.org/10.1109/lawp.2021.3088449 Zobrazit plný text záznamu