Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture
Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2019
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| Online Access: | https://hdl.handle.net/1721.1/122553 |
| _version_ | 1826213502558142464 |
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| author | Johnson, Matthew Roy,S.M.Massachusetts Institute of Technology. |
| author2 | Martha L. Gray and Gary J. Tearney. |
| author_facet | Martha L. Gray and Gary J. Tearney. Johnson, Matthew Roy,S.M.Massachusetts Institute of Technology. |
| author_sort | Johnson, Matthew Roy,S.M.Massachusetts Institute of Technology. |
| collection | MIT |
| description | Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019 |
| first_indexed | 2024-09-23T15:50:16Z |
| format | Thesis |
| id | mit-1721.1/122553 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T15:50:16Z |
| publishDate | 2019 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1225532019-10-12T03:02:58Z Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture Johnson, Matthew Roy,S.M.Massachusetts Institute of Technology. Martha L. Gray and Gary J. Tearney. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Electrical Engineering and Computer Science. Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019 Cataloged from PDF version of thesis. Includes bibliographical references (pages 80-82). Minimally invasive surgical (MIS) techniques have increased the efficacy and safety of many previously open surgical procedures, while reducing cost. An enabling tool for MIS procedures is the endoscope, which frequently hosts technologies to illuminate, visualize, and apply a phototherapy laser to a surgical scene. Unfortunately, some candidate MIS procedures are not presently possible due to the insufficiently small diameter of currently available endoscopes, which is the result of illumination, visualization, and phototherapy functions each requiring a unique, adjacent, optical aperture. Furthermore, some MIS procedures in common practice could realize better outcomes with smaller diameter endoscopes. Small-diameter visual sensors have been realized with Spectrally Encoded Endoscopy (SEE), which uses an optical chain with a diffraction grating at the distal end to spectrally encode the (broadband) optical illumination signal in a line across the surgical scene. When the device is azimuthally rotated and the optical return signal processed, a high-quality 2-dimensional image can be reconstructed. With the objective of achieving very small endoscope diameter and therefore extending the reach of MIS, here a technology called Therapy Spectrally Encoded Endoscopy (TSEE), which adds the capability of laser therapy to SEE, is presented in three major variants. In the first variant, visualization, illumination, and the therapy laser are all transmitted through a common optical aperture. In the second and third variants, illumination and the therapy laser are transmitted through a common optical aperture, and external fiber optics are used to collect the image signal photons. The devices have respective diameters of 500 [mu]m and 1.4 mm, and are capable of transmitting a continuous-wave therapy laser with wavelength 532nm. Benign Paroxysmal Positional Vertigo (BPPV) and Twin-to-twin Transfusion Syndrome (TTTS) are evaluated for application of the TSEE technology, and to drive design requirements. by Matthew Roy Johnson. S.M. S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science 2019-10-11T22:11:36Z 2019-10-11T22:11:36Z 2019 2019 Thesis https://hdl.handle.net/1721.1/122553 1122565923 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 82 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Electrical Engineering and Computer Science. Johnson, Matthew Roy,S.M.Massachusetts Institute of Technology. Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture |
| title | Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture |
| title_full | Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture |
| title_fullStr | Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture |
| title_full_unstemmed | Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture |
| title_short | Development of small-diameter endoscope capable of high-resolution visualization and laser therapy through a shared optical aperture |
| title_sort | development of small diameter endoscope capable of high resolution visualization and laser therapy through a shared optical aperture |
| topic | Electrical Engineering and Computer Science. |
| url | https://hdl.handle.net/1721.1/122553 |
| work_keys_str_mv | AT johnsonmatthewroysmmassachusettsinstituteoftechnology developmentofsmalldiameterendoscopecapableofhighresolutionvisualizationandlasertherapythroughasharedopticalaperture |