Please use this identifier to cite or link to this item:
http://hdl.handle.net/2117/2059
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| Title: | Planar and cylindrical active microwave temperature imaging... |
| Authors: | Rius, J. M.
Jofre Roca, Lluís
Broquetas Ibars, Antoni |
| Other authors: | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
| Keywords: | Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Radiocomunicació i exploració electromagnètica::Teledetecció
Electromagnetic waves
Microwaves
Biophysics
Diagnosis
Temperature measurements
biothermics
microwave imaging
patient diagnosis
temperature measurement
2.45 GHz
Born reconstruction algorithms
backscattering measurement
cylindrical active microwave temperature imaging
differential temperature imaging
dynamic range difficulties
forward only field measurement
forward-backward field measurement
image resolution
lossy mediums
nonconcentric cylinders
numerical model
planar active microwave temperature imaging
quantitative image accuracy
real-time biomedical imaging systems
reconstruction parameters
resolution
scattered fields
sensitivity
weakly scattering problem
Ones electromagnètiques
Microones
Biofísica
Diagnòstic
Temperatures -- Mesurament |
| Publisher: | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| Abstract: | A comparative study at 2.45 GHz concerning both measurement and reconstruction parameters for planar and cylindrical configurations is presented. For the sake of comparison, a numerical model consisting of two nonconcentric cylinders is considered and reconstructed using both geometries from simulated experimental data. The scattered fields and reconstructed images permit extraction of very useful information about dynamic range, sensitivity, resolution, and quantitative image accuracy for the choice of the configuration in a particular application. Both geometries can measure forward and backward scattered fields. The backscattering measurement improves the image resolution and reconstruction in lossy mediums, but, on the other hand, has several dynamic range difficulties. This tradeoff between forward only and forward-backward field measurement is analyzed. As differential temperature imaging is a weakly scattering problem, Born approximation algorithms can be used. The simplicity of Born reconstruction algorithms and the use of FFT make them very attractive for real-time biomedical imaging systems.
Peer reviewed |
| Appears in Collections: | Documents de recerca
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