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You searched for subject:(SS OCT). Showing records 1 – 3 of 3 total matches.

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Texas A&M University

1. Pacheco Barajas, Oscar Joseu. Highly Efficient Spectral Calibration Methods for Swept-Source Optical Coherence Tomography.

Degree: MS, Electrical Engineering, 2017, Texas A&M University

Recent techniques in optical coherence tomography (OCT) make use of specialized light sources that sweep across a broad optical bandwidth, allowing for longer depth ranges at higher resolutions. The produced light source signal can be described as a gaussian damped sinusoid that non-uniformly sweeps across a narrow frequency band. When sampling this interferometric signal uniformly, the generated images present considerable distortion, because the spectral information is a function of wavenumber "k", not time. To solve this problem a "calibration" step needs to be performed; in this process, the acquired interferogram signal is linearized into k-space. The process usually involves estimating the phase-frequency change profile of the SS-OCT system via Hilbert transformation, inverse tangent and phase unwrapping. In this thesis, a multitude of low complexity, computationally efficient methods for the real-time calibration of Swept Source Optical Coherence Tomography (SS-OCT) systems are implemented and results are evaluated against commonly performed calibration techniques such as Hilbert transformation. Simulation shows execution times decisively improved by up to a factor of ten, depending on the used technique. Axial resolution was also slightly improved across all the tested techniques. Moreover, the inverse tangent and phase unwrapping steps necessary for Hilbert transform calibration techniques are eliminated, vastly reducing circuit implementation complexity and making the system suitable for future inexpensive, power efficient, on-chip solutions in SS-OCT post-processing. Advisors/Committee Members: Hoyos, Sebastian (advisor), Jo, Javier (committee member), Entesari, Kamran (committee member), Righetti, Raffaella (committee member).

Subjects/Keywords: Optical Coherence tomography; OCT; SS-OCT; Spectral Calibration; Digital Signal Processing; Mixed-Signal processing; Kaman Filtering; De-noising

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Pacheco Barajas, O. J. (2017). Highly Efficient Spectral Calibration Methods for Swept-Source Optical Coherence Tomography. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/166112

Chicago Manual of Style (16th Edition):

Pacheco Barajas, Oscar Joseu. “Highly Efficient Spectral Calibration Methods for Swept-Source Optical Coherence Tomography.” 2017. Masters Thesis, Texas A&M University. Accessed November 20, 2019. http://hdl.handle.net/1969.1/166112.

MLA Handbook (7th Edition):

Pacheco Barajas, Oscar Joseu. “Highly Efficient Spectral Calibration Methods for Swept-Source Optical Coherence Tomography.” 2017. Web. 20 Nov 2019.

Vancouver:

Pacheco Barajas OJ. Highly Efficient Spectral Calibration Methods for Swept-Source Optical Coherence Tomography. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2019 Nov 20]. Available from: http://hdl.handle.net/1969.1/166112.

Council of Science Editors:

Pacheco Barajas OJ. Highly Efficient Spectral Calibration Methods for Swept-Source Optical Coherence Tomography. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/166112


University of Arizona

2. Sassu, Matthew George. Software Implementation of a Combined Fluorescence and Swept Source Optical Coherence Tomography Imaging System .

Degree: 2018, University of Arizona

This paper serves as a detailed overview of the software developed for the Falloposcope endoscope being developed by the Jennifer Barton Optics Tissue Laboratory. The Falloposcope is designed for a screening procedure for early detection of ovarian cancer in the fallopian tubes. The software controls a charge-coupled device (CCD) camera to perform reflectance and fluorescence imaging, which serves to navigate the endoscope to the fallopian tubes and surveil suspicious tissue regions. It also controls a swept source optical coherence tomography (SS-OCT) imaging system to provide high resolution, cross-sectional tomographic images of these tissue regions. CCD imaging is performed using a Princeton Instruments Pixis 1024B Digital CCD camera system. OCT imaging is performed using a Santec HSL-2100 swept source infrared laser and BPD-200-ST photodetector, as well as an AlazarTech ATS-9462 data acquisition board. Data from these instruments is displayed on a graphic user interface written in C++/CLI. This paper details how each of these imaging systems functions, from hardware control through data processing and visualization, as well as how more challenging programming tasks were completed. The core functionality of each system is complete, but there remain some parameters of the OCT data display which remain to be finalized. The available options, as well as the standard practices within the medical industry around OCT imaging, are discussed. Advisors/Committee Members: Barton, Jennifer Kehlet (advisor), Utzinger, Urs (committeemember), Koshel, John (committeemember).

Subjects/Keywords: AlazarTech; CCD Imaging; C++/CLI; Fluorescence Imaging; SS-OCT; Swept Source Optical Coherence Tomography

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Sassu, M. G. (2018). Software Implementation of a Combined Fluorescence and Swept Source Optical Coherence Tomography Imaging System . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/631417

Chicago Manual of Style (16th Edition):

Sassu, Matthew George. “Software Implementation of a Combined Fluorescence and Swept Source Optical Coherence Tomography Imaging System .” 2018. Masters Thesis, University of Arizona. Accessed November 20, 2019. http://hdl.handle.net/10150/631417.

MLA Handbook (7th Edition):

Sassu, Matthew George. “Software Implementation of a Combined Fluorescence and Swept Source Optical Coherence Tomography Imaging System .” 2018. Web. 20 Nov 2019.

Vancouver:

Sassu MG. Software Implementation of a Combined Fluorescence and Swept Source Optical Coherence Tomography Imaging System . [Internet] [Masters thesis]. University of Arizona; 2018. [cited 2019 Nov 20]. Available from: http://hdl.handle.net/10150/631417.

Council of Science Editors:

Sassu MG. Software Implementation of a Combined Fluorescence and Swept Source Optical Coherence Tomography Imaging System . [Masters Thesis]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/631417

3. 佐野,優. 正常眼におけるSwept Source-Optical Coherence Tomographyを用いた脈絡膜厚の検討 : Correlation of Aging and Segmental Choroidal Thickness Measurement using Swept Source Optical Coherence Tomography in Healthy Eyes.

Degree: 博士(医学), 2017, Nihon University / 日本大学

Subjects/Keywords: 脈絡膜; choroid; 脈絡膜厚; choroidal thickness; 光干渉断層計; Optical Coherence Tomography; 正常眼; healthy eyes; SS-OCT; Swept Source Optical Coherence Tomography

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

佐野,優. (2017). 正常眼におけるSwept Source-Optical Coherence Tomographyを用いた脈絡膜厚の検討 : Correlation of Aging and Segmental Choroidal Thickness Measurement using Swept Source Optical Coherence Tomography in Healthy Eyes. (Thesis). Nihon University / 日本大学. Retrieved from http://repository.nihon-u.ac.jp/xmlui/handle/11263/1228 ; http://dx.doi.org/10.15006/32665A5212

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

佐野,優. “正常眼におけるSwept Source-Optical Coherence Tomographyを用いた脈絡膜厚の検討 : Correlation of Aging and Segmental Choroidal Thickness Measurement using Swept Source Optical Coherence Tomography in Healthy Eyes.” 2017. Thesis, Nihon University / 日本大学. Accessed November 20, 2019. http://repository.nihon-u.ac.jp/xmlui/handle/11263/1228 ; http://dx.doi.org/10.15006/32665A5212.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

佐野,優. “正常眼におけるSwept Source-Optical Coherence Tomographyを用いた脈絡膜厚の検討 : Correlation of Aging and Segmental Choroidal Thickness Measurement using Swept Source Optical Coherence Tomography in Healthy Eyes.” 2017. Web. 20 Nov 2019.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

佐野,優. 正常眼におけるSwept Source-Optical Coherence Tomographyを用いた脈絡膜厚の検討 : Correlation of Aging and Segmental Choroidal Thickness Measurement using Swept Source Optical Coherence Tomography in Healthy Eyes. [Internet] [Thesis]. Nihon University / 日本大学; 2017. [cited 2019 Nov 20]. Available from: http://repository.nihon-u.ac.jp/xmlui/handle/11263/1228 ; http://dx.doi.org/10.15006/32665A5212.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

佐野,優. 正常眼におけるSwept Source-Optical Coherence Tomographyを用いた脈絡膜厚の検討 : Correlation of Aging and Segmental Choroidal Thickness Measurement using Swept Source Optical Coherence Tomography in Healthy Eyes. [Thesis]. Nihon University / 日本大学; 2017. Available from: http://repository.nihon-u.ac.jp/xmlui/handle/11263/1228 ; http://dx.doi.org/10.15006/32665A5212

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

.