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Feasibility study of normal and septic tracheal imaging using optical coherence tomography
Woonggyu Jung1, Jun Zhang, Reza Mina-Araghi
1Beckman Laser Institute, University of California, Irvine, California 92612, USA.
Lasers in Surgery and Medicine
|August 31, 2004
Summary
Optical coherence tomography (OCT) can visualize detailed tracheal sub-surface structures, distinguishing normal from septic tracheas. This imaging technique shows promise for in situ pulmonary diagnostics without biopsy.
Area of Science:
- Pulmonary Medicine
- Medical Imaging
- Ophthalmology Technology
Background:
- Optical coherence tomography (OCT) is an advanced imaging technology.
- OCT has potential applications in flexible fiberoptic bronchoscopy for pulmonary diagnostics.
Purpose of the Study:
- To evaluate the feasibility of using OCT to image tracheal pathology.
- To assess OCT's capability in visualizing sub-surface tracheal structures.
Main Methods:
- Rabbit tracheas (normal and septic) were imaged using OCT.
- Two OCT delivery devices were tested: a moving stage and a flexible fiberoptic catheter.
- OCT images were compared with corresponding histology slides.
Main Results:
- OCT successfully visualized detailed tracheal sub-surface structures (epithelium, lamina propria, submucosa, cartilage).
- OCT images correlated well with histological findings.
- Septic tracheas showed marked mucosal and submucosal swelling in OCT images, visible with both devices.
Conclusions:
- OCT can distinguish tracheal sub-surface features typically requiring biopsy and microscopy.
- Significant differences between normal and septic tracheas were observed using OCT.
- OCT holds potential as a valuable tool for high-resolution, in situ evaluation of tracheal pathology.