title: Microwave-induced thermal imaging of tissue dielectric properties.
abstract: 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.
authors.affiliation: Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-2099, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Shi
authors.forename: R S
authors.initials: RS
authors.lastname: Witte
authors.forename: S M
authors.initials: SM
authors.lastname: Milas
authors.forename: J H
authors.initials: JH
authors.lastname: Neiss
authors.forename: X C
authors.initials: XC
authors.lastname: Chen
authors.forename: C A
authors.initials: CA
authors.lastname: Cain
authors.forename: M
authors.initials: M
authors.lastname: O'Donnell
mesh_terms: D000273:Adipose Tissue / Q000000981:diagnostic imaging; D000465:Algorithms; D000818:Animals; D004867:Equipment Design; D008099:Liver / Q000000981:diagnostic imaging; D008872:Microwaves; D051381:Rats; D018084:Ultrasonography, Interventional / Q000295:instrumentation*