Three-dimensional microwave tomography: initial experimental imaging of animals.
The purpose of this study was to construct a microwave tomographic system capable of conducting experiments with whole scale biological objects and to demonstrate the feasibility of microwave tomography for imaging such objects using a canine model. Experiments were conducted using a three-dimensional (3-D) microwave tomographic system with working chamber dimensions of 120 cm in diameter and 135 cm in height. The operating frequency was 0.9 GHz. The object under study was located in the central area of the tomographic chamber filled with a salt solution. Experimentally measured attenuation of the electromagnetic field through the thorax was about -120 dB. To obtain images, we used various two-dimensional and 3-D reconstruction schemes. Images of the canine were obtained. In spite of imperfections, the images represent a significant milestone in the development of microwave tomography for whole body imaging and demonstrate its feasibility.
Semenov
Serguei Y
SY
Carolinas Medical Center, Charlotte, NC 28203, USA. ssemenov@carolinas.org
Svenson
Robert H
RH
Bulyshev
Alexander E
AE
Souvorov
Alexander E
AE
Nazarov
Alexei G
AG
Sizov
Yuri E
YE
Posukh
Vitaly G
VG
Pavlovsky
Andrey
A
Repin
Pavel N
PN
Starostin
Andrey N
AN
Voinov
Boris A
BA
Taran
Michael
M
Tatsis
George P
GP
Baranov
Vladimir Y
VY
D000818:Animals; D004285:Dogs; D004574:Electromagnetic Fields; D004867:Equipment Design; D006321:Heart / Q000033:anatomy & histology; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008872:Microwaves; D014054:Tomography / Q000295:instrumentation / Q000379:methods*