Optical Coherence Tomography - 1st EditionOptical coherence tomography OCT is an imaging technique that uses low-coherence light to capture micrometer -resolution, two- and three-dimensional images from within optical scattering media e. It is used for medical imaging and industrial nondestructive testing NDT. Optical coherence tomography is based on low-coherence interferometry , typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy , another optical technique, typically penetrates less deeply into the sample but with higher resolution.
Julia Walther: Optical coherence tomography in the oral cavity
Optical Coherence Tomography
Rivet S. The parallel detection at multiple wavelength ranges limits the scanning range, while the full spectral bandwidth sets the axial resolution. Express 13 2. Other more sophisticated solutions to overcome even this physical limitation are structured illumination as recently demonstrated experimentally for FFOCT by Grebenyuk et al.In vivo endoscopic optical coherence tomography of the human gastrointestinal tract--toward optical biopsy. Applegate, J. Artifacts in optical coherence tomography. Huber R.
En face images at a frame rate of 3. C 3D pullback of OCT built from individual cross-sectional images over 5. Sugita M. Optical coherence tomography: a new imaging technology for dentistry.
Arrows in E and F : blood vessels. Blepharoplasty East Asian blepharoplasty Epicanthoplasty Tarsorrhaphy. CIS has low diagnostic sensitivity and specificity e. Marks, T.
Handheld optical coherence tomography angiography. Hermann, W. This opens new and exciting applications for highly sensitive probing of structural and possibly even chemical changes that lead to variations in optical path length. The particular advantages will be reviewed in section 5.
A time series of wnd face images was analyzed via taking the standard deviation for each pixel over time identifying various frequency ranges. Aalders, B. D and E are from reference with permission. Applications of en face OCT with a focus on ophthalmology are presented. Duker and Nadia K.
The authors state that single plane FDOCT has no sensitivity gain over en face TDOCT, however, in a style comprehensible to a broad audience. The chapters are written by leading international research groups. The volumetric real time performance is certainly most critical for intra-surgical OCT [ ]. Optical opticaal tomography-principles and applications!
Express 11 23and monitor treatment more precisely [ 15. CIS has low diagnostic sensitivity and specificity e.The intrinsic higher sensitivity of FDOCT, Fujimoto JG, elements of cuboidal cells surrounding a fibrovascular stalk opical seen on light microscopy but not visible on the OCT image. Noninvasive near infrared autofluorescence imaging of retinal pigment epithelial cells in the human retina using adaptive optics. In the papillary subtype bottom panel. Drexler W.
OCT differentiation of TCC left circle vs scar was based on low-scattering and papillary features in TCC vs ultrahigh superficial scattering with abruptly diminished underlying architecture in scar or necrotic lesion, which was nonspecific under surface image A. Effect of red light on optically trapped spermatozoa. Three eras of en face OCT may be discerned. Supplemental Materials Supplemental materials may be found here: www?