Microwave-Induced Thermal Imaging of Tissue Dielectric Properties

A new imaging method, microwave-induced thermal imaging (MITI), was developed to differentiate tissue based on thermal and dielectric properties. Image contrast depends on temporal strain in tissue, which was determined by one-dimensional speckle tracking using a phase-sensitive, correlation-based t...

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Bibliographic Details
Published in:Ultrasonic imaging 2003-04, Vol.25 (2), p.109-121
Main Authors: Shi, Y., Witte, R.S., Milas, S.M., Neiss, J.H., Chen, X.C., Cain, C.A., O'Donnell, M.
Format: Article
Language:English
Subjects:
Acoustical measurements and instrumentation
Acoustics
Adipose Tissue - diagnostic imaging
Algorithms
Animals
Biological and medical sciences
Equipment Design
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Investigative techniques, diagnostic techniques (general aspects)
Liver - diagnostic imaging
Medical sciences
Microwaves
Miscellaneous. Technology
Physics
Rats
Ultrasonic investigative techniques
Ultrasonography, Interventional - instrumentation
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Summary:A new imaging method, microwave-induced thermal imaging (MITI), was developed to differentiate tissue based on thermal and dielectric properties. Image contrast depends on temporal strain in tissue, which was determined by one-dimensional speckle tracking using a phase-sensitive, correlation-based technique. The underlying mechanisms were analyzed and experimental results on biologic tissue agreed well with theoretical predictions. Because of its strong contrast between water-bearing and lipid-bearing tissue, the technique may enhance existing intravascular ultrasound (IVUS) imaging systems to identify vulnerable arterial plaque.
ISSN:0161-7346
1096-0910
DOI:10.1177/016173460302500203