Quasi-Multistatic MIST Beamforming for the Early Detection of Breast Cancer
- 27 February 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 57 (4), 830-840
- https://doi.org/10.1109/tbme.2009.2016392
Abstract
Microwave imaging via space-time (MIST) beamforming has been shown to be one of the most promising imaging modalities for detecting small malignant breast tumors. This paper outlines two modifications to the MIST system developed by Hagness for the early detection of breast cancer, resulting in a quasi-multistatic MIST beamformer (multi-MIST). Multistatic MIST beamforming involves illuminating the breast with an ultrawideband (UWB) signal from one antenna while collecting the reflections at an array of antennas, as opposed to traditional monostatic MIST beamforming where only the transmitting antenna records the reflections from the breast. In order to process the multistatic data, traditional data-adaptive artifact removal algorithms have to be modified to accommodate signals from all antennas. Also, the MIST beamforming algorithm, which spatially focuses the signal and compensates for frequency-dependent propagation effects, has to be modified. The algorithms are tested on a 2-D anatomically accurate finite-difference time-domain model of the breast. The multi-MIST beamformer described here is shown to offer an improved signal to clutter ratio when compared to the traditional monostatic MIST beamformer.Keywords
This publication has 35 references indexed in Scilit:
- A large-scale study of the ultrawideband microwave dielectric properties of normal breast tissue obtained from reduction surgeriesPhysics in Medicine & Biology, 2007
- Microwave imaging via space-time beamforming for early detection of breast cancerIEEE Transactions on Antennas and Propagation, 2003
- A confocal microwave imaging algorithm for breast cancer detectionIEEE Microwave and Wireless Components Letters, 2001
- Computational modeling of three-dimensional microwave tomography of breast cancerIEEE Transactions on Biomedical Engineering, 2001
- Microwave detection of buried mines using non-contact, synthetic near-field focusingIEE Proceedings - Radar, Sonar and Navigation, 2001
- A clinical prototype for active microwave imaging of the breastIEEE Transactions on Microwave Theory and Techniques, 2000
- Electromagnetic Simulation Using the FDTD MethodPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2000
- The dielectric properties of biological tissues: III. Parametric models for the dielectric spectrum of tissuesPhysics in Medicine & Biology, 1996
- The measured electrical properties of normal and malignant human tissues from 50 to 900 MHzMedical Physics, 1994
- A frequency-dependent finite-difference time-domain formulation for dispersive materialsIEEE Transactions on Electromagnetic Compatibility, 1990