Piezoelectric-transducer-based miniature catheter for ultrahigh-speed endoscopic optical coherence tomography
Year: 2011
Type: article
Abstract: We developed a piezoelectric-transducer- (PZT) based miniature catheter with an outer diameter of 3.5 mm for ultrahigh-speed endoscopic optical coherence tomography (OCT). A miniaturized PZT bender actuates a fiber and the beam is scanned through a GRIN lens and micro-prism to provide high-speed, side-viewing capability. The probe optics can be pulled back over a long distance to acquire three-dimensional (3D) data sets covering a large area. Imaging is performed with 11 μm axial resolution in air (8 μm in tissue) and 20 μm transverse resolution, at 960 frames per second with a Fourier domain mode-locked laser operating at 480 kHz axial scan rate. Using a high-speed data acquisition system, endoscopic OCT imaging of the rabbit esophagus and colon in vivo and human colon specimens ex vivo is demonstrated.
Source: Biomedical Optics Express
DOI: 10.1364/boe.2.002438
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,913
Funders: Deutsche Forschungsgemeinschaft, Erlangen Graduate School of Advanced Optical Technologies, National Institutes of Health, National Heart, Lung, and Blood Institute, National Eye Institute, National Cancer Institute, National Institute of Neurological Disorders and Stroke, Air Force Office of Scientific Research
OpenAlex ID: W2014377765