Microwave Induced Thermoacoustic Imaging

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Microwave Induced Thermoacoustic Imaging

• By Zaid Al-Husseini

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Sections

• Recent Progress
• HFSS Imaging Chamber Design
• HFSS Microwave Field Strength at Various
  Positions including Animations.
• HFSS Microwave Field Direction Vectors
• Problems
• Future Work

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Recent Progress

• Helping John and Vinh on Microwave Imaging
  Project.
• Simulating Objects with John and Vinh.
• Worked on HFSS model to simulate microwaves
  through a waveguide into breast.

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HFSS Imaging Chamber Design
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Microwave Field Strength Position 1
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Microwave Field Strength Position 2
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Microwave Field Strength Position 3
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Microwave Field Strength Position 4
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Microwave Field Strength Animation (Top Down View)
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Microwave Field Strength (YZ Cross Section)
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Microwave Field Strength Animation (YZ Cross
Section)
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Microwave Field Strength (XZ Cross Section)
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Microwave Field Strength Animation (XZ Cross
Section)
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Microwave Wave Direction Vectors (Poynting Vector)
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Problems

• We are unable to simulate a time varying signal
  in HFSS.
• We are unable to simulate the thermoacoustic
  expansion of a breast in HFSS due to the limited
  capability of HFSS in simulating effects of
  microwave heating on the breast(thermal
  equations) (HFSS cannot simulate the expansion of
  the breast when a microwave heats it up)
• We need to purchase the Microwave generator to
  continue with the Microwave Induced
  Thermoacoustic Imaging Experiment.

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Future Plans

• Continue to Help John and Vinh on Microwave
  Imaging Project.
• Refine Current HFSS Microwave Breast Simulation
  Model
• Buy Items using the URS grant Awarded (need fund
  code).