Related Experiment Video
Updated: Aug 30, 2025
08:31
Three-dimensional Optical-resolution Photoacoustic Microscopy
Published on: May 3, 2011
18.3K
Approaching closed spherical, full-view detection for photoacoustic tomography
Lawrence C Yip1,2, Parsa Omidi1,2, Elina Raščevska1,2
1Lawson Health Research Institute, Canada.
Journal of Biomedical Optics
|August 31, 2022
Summary
Researchers developed a novel near full-view system for photoacoustic tomography (PAT) to overcome limited-view artifacts. This experimental setup demonstrates significant advantages over traditional limited-view PAT imaging.
Area of Science:
- Medical Imaging
- Biomedical Engineering
- Optics
Background:
- Photoacoustic tomography (PAT) is a promising imaging modality with clinical potential.
- Limited-view angle and bandwidth in PAT systems cause artifacts, hindering image quality.
- Experimental comparisons between limited-view and full-view PAT are scarce.
Purpose of the Study:
- To develop and experimentally validate a near full-view photoacoustic tomography system.
- To address key limitations of limited-view angle and bandwidth in PAT.
- To demonstrate the advantages of a full-view setup over conventional methods.
Main Methods:
- A custom ring-shaped detector array was mounted on a 6-axis robot for rotation and translation.
- Achieved up to 3.8π steradian view angle coverage.
- System optimization using negativity artifact minimization and phantom imaging (star contrast, synthetic breast tumor, vascular phantoms).
Main Results:
- Optimized angular/rotation scans required approximately 212 effective detectors for high-quality images.
- Used 15-mm steps for adjustable field of view based on object size.
- Successfully imaged phantoms with clear features and minimal artifacts.
Conclusions:
- A near full-view closed spherical PAT system was successfully developed.
- This system experimentally demonstrates the significant advantages of full-view PAT.
- Paves the way for future research and clinical translation of improved PAT.
