Read e-book online Optical Coherence Tomography: Technology and Applications 3 PDF

By Wolfgang Drexler, James G. Fujimoto

ISBN-10: 3319064185

ISBN-13: 9783319064185

ISBN-10: 3319064193

ISBN-13: 9783319064192

ISBN-10: 3319064207

ISBN-13: 9783319064208

Optical coherence tomography (OCT) is the optical analog of ultrasound imaging and is a strong imaging strategy that permits non-invasive, in vivo, excessive solution, cross-sectional imaging in organic tissue. Between 30 to forty Million OCT imaging strategies are played according to yr in ophthalmology. The total marketplace is anticipated at greater than half Billion USD.
A new iteration OCT technology was built, dramatically expanding solution and velocity, reaching in vivo optical biopsy, i.e. the visualization of tissue architectural morphology in situ and in genuine time.  practical extensions of OCT know-how let non-invasive, intensity resolved sensible overview and imaging of tissue.
The booklet introduces OCT expertise and purposes not just from an optical and technological point of view, but in addition from the biomedical and medical perspective. This moment version is broadly prolonged and covers significantly more topics then the 1st version of this booklet. The chapters are written by leading foreign examine teams, in a method understandable to a wide viewers. it is going to be of curiosity not just to physicists, scientists and engineers, but in addition to biomedical and scientific researchers from diverse scientific specialties

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Saline flushing was used to remove blood from the imaging field. Imaging was performed with the LightLab M2 and an occlusion balloon catheter. Modern intravascular OCT instruments use contrast flushing without occlusion (Courtesy of LightLab Imaging) This study reported OCT imaging of normal coronary arteries, intimal dissections, and stents with 10 mm resolution. OCT imaging in human patients was first reported by Jang et al. in 2001 [61]. 2 F OCT imaging catheter and demonstrated imaging of tissue prolapse in a stent, comparing OCT with IVUS.

Several early OCT imaging studies were performed using ex vivo surgical specimens [3, 39–50]. These studies helped to define which structural features were visible using OCT and to establish a baseline for comparison to histology. 11 shows an example of one of the first OCT images of arterial plaque ex vivo and corresponding histology from Brezinski et al. 1996 [3]. The OCT image has an axial resolution of $15 mm in tissue and imaging was performed at 1,300 nm wavelength. The figure shows an unstable plaque characterized by a thin intimal cap layer, adjacent to a heavily calcified plaque with low lipid content.

Since axial resolution is inversely proportional to the bandwidth of the light source, broad bandwidth light sources are required to achieve high axial resolution. The transverse resolution in OCT imaging is the same as in optical microscopy and is determined by the diffraction limited spot size of the focused optical beam. The diffraction limited minimum spot size is proportional to wavelength and inversely proportional to the numerical aperture or the focusing angle of the beam. The transverse resolution is Dx ¼ 4l f Á p d where l is the wavelength, d is the size of the incident beam on the objective lens, and f is the focal length.

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Optical Coherence Tomography: Technology and Applications 3 Volume Set by Wolfgang Drexler, James G. Fujimoto

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