Abstract
A 512-element photoacoustic tomography system for small animal imaging using a ring ultrasound array has been developed. The system features a 5 MHz piezocomposite transducer array formed into a complete circular aperture. Custom receiver electronics consisting of dedicated preamplifiers, 8:1 multiplexed post-amplifiers, and a 64-channel data acquisition module provide full tomographic imaging at up to 8 frames/second. We present details of the system design along with characterization results of the resolution, imaging volume, and sensitivity. Small animal imaging performance is demonstrated through images of mice brain vasculature at different depths and real-time spectroscopic scans. This system enables real-time tomographic imaging for functional photoacoustic studies for the first time.
| Original language | English |
|---|---|
| Article number | 71770B |
| Journal | Progress in Biomedical Optics and Imaging - Proceedings of SPIE |
| Volume | 7177 |
| DOIs | |
| State | Published - 2009 |
| Event | Photons Plus Ultrasound: Imaging and Sensing 2009 - San Jose, CA, United States Duration: Jan 25 2009 → Jan 28 2009 |
Keywords
- Backprojection
- Photoacoustic tomography
- Real-time imaging
- Reconstruction