We present an extended focus OCT system for dermatologic applications that maintains high lateral resolution over a large depth range by using Bessel beam illumination. More, Bessel beams exhibit a self-reconstruction property that is particularly useful to avoid shadowing from surface structures such as hairs. High lateral resolution and high-speed measurement, thanks to a rapidly tuning swept source, allows not only for imaging of small skin structures in depth but also for comprehensive visualization of the small capillary network within the human skin in-vivo. We use this information for studying temporal vaso-responses to hypothermia. In contrast to other perfusion imaging methods such as laser Doppler imaging (LDI), OCT gives specific access to vascular responses in different vascular beds in depth.
|Title of host publication||Photonic Therapeutics and Diagnostics VIII|
|Number of pages||7|
|Publication status||Published - 09.02.2012|
|Event||Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI - San Francisco, United States|
Duration: 21.01.2012 → 26.01.2012