Abstract
A study of microwave-induced thermoacoustic tomography of inhomogeneous tissues using multisector scanning is presented. A short-pulsed microwave beam is used to irradiate the tissue samples. The microwave absorption excites time-resolved acoustic waves by thermoelastic expansion. The amplitudes of the acoustic waves are strongly related to locally absorbed microwave-energy density. The acoustic waves may propagate in all spatial directions. A focused ultrasonic transducer is employed to acquire temporal acoustic signals from multiple directions. Each detected signal is converted into a one-dimensional (1D) image along the acoustic axis of the transducer. The cross-sectional images of the tissue samples are calculated by combining all of the 1D images acquired in the same planes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1958-1963 |
| Number of pages | 6 |
| Journal | Medical physics |
| Volume | 28 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 1 2001 |
Keywords
- Imaging
- Microwave
- Scan
- Sector
- Thermoacoustics
- Tomography
ASJC Scopus subject areas
- Biophysics
- Radiology Nuclear Medicine and imaging