title: Reflection coefficient detection of simulation models for microwave imaging simulation system.
abstract: The study was conducted based on two objectives as framework. The first objective is to determine the point of microwave signal reflection while penetrating into the simulation models and, the second objective is to analyze the reflection pattern when the signal penetrate into the layers with different relative permittivity, εr. Thus, several microwave models were developed to make a close proximity of the in vivo human brain. The study proposed two different layers on two different characteristics models. The radii on the second layer and the corresponding antenna positions are the factors for both models. The radii for model 1 is 60 mm with an antenna position of 10 mm away, in contrast, model 2 is 10 mm larger in size with a closely adapted antenna without any gap. The layers of the models were developed with different combination of materials such as Oil, Sandy Soil, Brain, Glycerin and Water. Results show the combination of Glycerin + Brain and Brain + Sandy Soil are the best proximity of the in vivo human brain grey and white matter. The results could benefit subsequent studies for further enhancement and development of the models.
authors.affiliation: Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
authors.forename: Kim Mey
authors.initials: KM
authors.lastname: Chew
authors.forename: Rubita
authors.initials: R
authors.lastname: Sudirman
authors.forename: Norhudah
authors.initials: N
authors.lastname: Seman
authors.forename: Ching Yee
authors.initials: CY
authors.lastname: Yong
mesh_terms: D000465:Algorithms; D001921:Brain / Q000473:pathology*; D003198:Computer Simulation; D003952:Diagnostic Imaging / Q000295:instrumentation / Q000379:methods*; D005990:Glycerol / Q000737:chemistry; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008872:Microwaves; D019047:Phantoms, Imaging; D012987:Soil; D014867:Water / Q000737:chemistry
chemical_list: D012987:Soil; D014867:Water; D005990:Glycerol
keywords: computer simulation technology; human-like phantom; microwave signal; reflection coefficient; relative permittivity