Advances in Microwave Near-Field Imaging: Prototypes, Systems, and Applications

Wenyi Shao, Todd McCollough

Research output: Contribution to journalArticlepeer-review


Due to microwaves’ ability to penetrate optically opaque media, short-range applications, including medical imaging, nondestructive testing (NDT) and quality evaluation, through-the-wall imaging, and security screening, have been developed. This article addresses some older systems included in prior reviews to provide historical perspective. The focus is on recent active-mode hardware systems for two prominent medical applications currently under investigation, such as early stage breast-cancer and brain-injury detection. Cost reductions in RF manufacturing have enabled many microwave breast-imaging systems to operate at a few gigahertz to obtain a high resolution where the dielectric property provides a significant contrast between malignant and healthy states for some breast tissues, with the notable exception of fibroglandular tissue.

Original languageEnglish (US)
Article number9052064
Pages (from-to)94-119
Number of pages26
JournalIEEE Microwave Magazine
Issue number5
StatePublished - May 2020

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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