Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Torke, PR; Nuster, R; Paltauf, G.
Photoacoustic computational ghost imaging.
Opt Lett. 2022; 47(6): 1462-1465.
Doi: 10.1364/OL.452229
PubMed
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- Führende Autor*innen der Med Uni Graz
- Torke Paul Rudi
- Co-Autor*innen der Med Uni Graz
- Nuster Robert
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- Abstract:
- Photoacoustic imaging with optical resolution usually requires a single-pixel raster scan. An alternative approach based on illumination with patterns obtained from a Hadamard matrix, measurement of the generated ultrasound wave with a single detector, followed by a reconstruction known from computational ghost imaging is demonstrated here. Since many pixels on the object are illuminated at the same time, thereby contributing to the recorded signal, this approach gives a better contrast-to-noise ratio compared to the raster scan, as demonstrated in a phantom experiment. Furthermore, exploiting the temporal information for depth-resolved imaging is possible. The proposed method will be beneficial in situations where the radiant exposure of a sample is limited due to either safety precautions or the properties of the available light source.
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