Title :
Thermoacoustic computed tomography of the breast at 434 MHz
Author :
Kruger, R.A. ; Kiser, W.L. ; Reinecke, D.R. ; Kruger, G.A. ; Eisenhart, R.L.
Author_Institution :
Med. Center, Indiana Univ., Indianapolis, IN, USA
Abstract :
The authors have constructed a thermoacoustic tomography (TACT) imaging device for mapping the three-dimensional absorption of 434 MHz radiowaves in the human breast. Contrast variations in these images reflect differences in bound water content of the constituent tissues of the breast. As anticipated, initial images have displayed excellent soft tissue differentiation between fatty and fibroglandular tissue with spatial resolution of 1.5-4 mm throughout a 2000 mm/sup 3/ imaging volume using safe levels of 434 MHz radiation. The imaging technique has great potential for breast cancer detection.
Keywords :
biological organs; biothermics; cancer; computerised tomography; image resolution; mammography; thermoacoustics; 1.5 to 4 mm; 434 MHz; bound water content differences; breast cancer detection; breast imaging; contrast variations; fatty tissue; fibroglandular tissue; imaging technique; medical diagnostic imaging; safe levels; soft tissue differentiation; spatial resolution; thermoacoustic computed tomography; Biological tissues; Biomedical imaging; Breast; Computed tomography; Electromagnetic wave absorption; Frequency; Microwave generation; Optical imaging; Signal generators; Spatial resolution;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779831
