Pulsed laser diode based optoacoustic imaging of biological tissues
Optoacoustic tomography (OAT) is a promising hybrid imaging modality for many biomedical applications. However, the use of Nd:YAG laser as excitation source makes the OAT system expensive, and non-portable. Miniaturization of OAT system is an immediate task to make it a potential tool for both precl...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/81359 http://hdl.handle.net/10220/39212 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Optoacoustic tomography (OAT) is a promising hybrid imaging modality for many biomedical applications. However, the use of Nd:YAG laser as excitation source makes the OAT system expensive, and non-portable. Miniaturization of OAT system is an immediate task to make it a potential tool for both preclinical and clinical studies. In this work, we present an OA system that uses a miniaturized pulsed laser diode which can provide near infrared pulses at ~803 nm. With laser fluence ~0.3 mJ cm−2 on the tissue surface, we achieved 3 cm deep imaging in chicken tissue. The high pulse repetition rate of the diode laser allowed rapid acquisition of OA cross-sectional images with good image quality. The results promise that the proposed system has potential to be used as an alternative to Nd:YAG based OAT systems for biological imaging applications. |
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