A Synthetic Total Impulse Response Characterization Method for Correction of Hand-Held Optoacoustic Images
IEEE Transactions on Medical Imaging
|April 24, 2020
Summary
Accurate characterization of the total impulse response (TIR) in optoacoustic tomography systems improves image quality. This method enhances resolution and diagnostic capability for handheld optoacoustic imaging devices.
Area of Science:
- Medical Imaging
- Acoustic Physics
- Biomedical Engineering
Background:
- Optoacoustic (photoacoustic) tomography relies on system impulse responses that impact image quality.
- Previous studies have not fully detailed how system components affect optoacoustic reconstruction quality.
Purpose of the Study:
- To fully characterize the total impulse response (TIR) of a handheld optoacoustic tomography system.
- To improve image resolution and fidelity in optoacoustic tomographic reconstruction.
Main Methods:
- Combined sparse measurements of TIR with a geometric acoustic model.
- Developed a synthetic TIR for a handheld system with concave, limited-view geometry.
- Reconstructed data from phantoms and human volunteers using the synthetic TIR.
Main Results:
- Achieved a comprehensive characterization of the TIR for the specific system geometry.
- Demonstrated significant improvements in image resolution and fidelity.
- Validated the effectiveness of TIR correction in improving diagnostic capabilities.
Conclusions:
- Accurate TIR characterization is crucial for high-quality optoacoustic tomography.
- The developed method enhances the diagnostic potential of handheld optoacoustic imaging systems.
- TIR correction offers a pathway to more precise medical diagnoses using optoacoustic technology.
