Electromagnetic breast imaging: average tissue property values in women with negative clinical findings.
Representative data are provided for three electromagnetic breast imaging techniques-near-infrared spectroscopy, electrical impedance spectroscopy, and microwave imaging spectroscopy-to serve as potential benchmarks for future investigation. The breasts of 23 women without clinical or mammographic findings of disease were imaged in the coronal plane with nonionizing radiation of varying frequencies. Average electromagnetic property values were reconstructed at each frequency on the basis of computational models of light diffusion, current flow, and microwave propagation. Electromagnetic properties were correlated with subject characteristics and between techniques. Each technique yielded information on breast tissue features (eg, conductivity, permittivity, light scattering, and absorption) that had not previously all been measured in the same individuals.
Poplack
Steven P
SP
Department of Radiology, Dartmouth Hitchcock Medical Center, One Medical Center Dr, Lebanon, NH 03756, USA. steven.p.poplack@hitchcock.org
Paulsen
Keith D
KD
Hartov
Alexander
A
Meaney
Paul M
PM
Pogue
Brian W
BW
Tosteson
Tor D
TD
Grove
Margaret R
MR
Soho
Sandra K
SK
Wells
Wendy A
WA
D000328:Adult; D000368:Aged; D001940:Breast / Q000033:anatomy & histology*; D055590:Electromagnetic Phenomena; D005260:Female; D006801:Humans; D008875:Middle Aged; D012016:Reference Values