Real-time photoacoustic imaging using a precise forward model and fast iterative inverse
US11854124B2 · kind B2 · utility
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Key dates
| Filing date | Nov 2, 2021 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Feb 21, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/428
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for photoacoustic imaging is performed by measuring RF time samples from transducer elements, and reconstructing an estimated initial pressure image from the measured RF time samples and a pre-calculated forward model matrix. The reconstructing involves minimizing the difference between the pre-calculated forward model matrix applied to the image estimate and the measured RF time samples by implementing a superiorized modified conjugate gradient least squares algorithm to minimize the total variation norm. The model matrix factors each of the transducer elements into sub-wavelength mathematical elements.
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