Deep imaging with low-cost photoacoustic tomography system with pulsed diode laser
Optical imaging beyond a few mm inside biological tissue is a challenging task due to the light scattering inside the biological tissue. Photoacoustic tomography (PAT) breaks this depth limit of optical imaging by combining light and sound. Over the last few years PAT has emerged as a viable deep...
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| Format: | Conference Paper |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/93725 http://hdl.handle.net/10220/38375 http://proceedings.spiedigitallibrary.org.ezlibproxy1.ntu.edu.sg/proceeding.aspx?articleid=2398813 |
| Summary: | Optical imaging beyond a few mm inside biological tissue is a challenging task due to the light scattering inside
the biological tissue. Photoacoustic tomography (PAT) breaks this depth limit of optical imaging by combining
light and sound. Over the last few years PAT has emerged as a viable deep tissue imaging modality and created
lot of attention to the medical imaging community. However, the cost, size and time consuming image
acquisition of the PAT system is deterrent to its translation to real clinical applications. So, there is a need for
inexpensive, compact, simple, fast PAT imaging system for easy adoption by the clinical practitioners.
Nanosecond pulsed laser diodes could help to bring down the cost, size and image acquisition time and make
PAT attractive for deep tissue imaging of optical contrast with high resolution. In this work, we present our
findings on using a low-cost pulsed diode laser for deep tissue imaging with photoacoustics. The PAT system
was tested on tissue phantoms to verify its potential imaging depth demonstration. Up to 3 cm deep inside
chicken breast tissue we were able to see photoacoustic signals and up to 2 cm deep we were able to image
successfully. |
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