1. Garret T. Bonnema

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    1. Mentioned In 12 Articles

    2. Swept source optical coherence tomography (OCT) method and system

      Swept source optical coherence tomography (OCT) method and system
      A method and apparatus are provided for a swept source optical coherence tomography (OCT) system utilizing a fast scanning mechanism in the sample arm and a slowly swept light source. The position data is collected rapidly while the wavelength of the source is swept slowly. The system reduces the sweep speed requirements of the light source enabling higher power, greater imaging range, and linear sweeps of the source frequency. The ...
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    3. Swept Source Optical Coherence Tomography (OCT) Method And System

      Swept Source Optical Coherence Tomography (OCT) Method And System
      A method and apparatus are provided for a swept source optical coherence tomography (OCT) system utilizing a fast scanning mechanism in the sample arm and a slowly swept light source. The position data is collected rapidly while the wavelength of the source is swept slowly. The system reduces the sweep speed requirements of the light source enabling higher power, greater imaging range, and linear sweeps of the source frequency. The ...
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    4. Feature Of The Week 6/21/09: Laparoscopic optical coherence tomography imaging of human ovarian cancer

      Feature Of The Week 6/21/09: Laparoscopic optical coherence tomography imaging of human ovarian cancer
      Feature Of The Week 6/21/09: Ovarian cancer is the fourth leading cause of cancer-related death among women in the US, largely attributed to late detection due to unreliable symptomology and screening tools without adequate resolution and specificity. As a result, ovarian cancer is often diagnosed at advanced stages, after invasion of adjacent structures or metastasis to a distant site. Women with regional and distant disease have a 5-year ...
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    5. A concentric three element radial scanning optical coherence tomography endoscope

      We have developed a 2.1 mm outer diameter optical coherence tomography endoscope that provides radial scans of luminal structures. The endoscope consists of three elements: (1) a stationary central core containing the fibers and focusing elements, (2) a rotating intermediate tube with a distal rod prism, and (3) a stationary sterilized glass cover. This design enables radial and spiral scanning and allows adjustment of the axial focal distance. Additionally ...
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    6. Laparoscopic optical coherence tomography imaging of human ovarian cancer

      Objectives Ovarian cancer is the fourth leading cause of cancer-related death among women in the US largely due to late detection secondary to unreliable symptomology and screening tools without adequate resolution. Optical coherence tomography (OCT) is a recently emerging imaging modality with promise in ovarian cancer diagnostics, providing non-destructive subsurface imaging at imaging depths up to 2 mm with near-histological grade resolution (10–20 μm). In this study, we developed ...
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    7. An automatic algorithm for detecting stent endothelialization from volumetric optical coherence tomography datasets.

      Related Articles Recent research has suggested that endothelialization of vascular stents is crucial to reducing the risk of late stent thrombosis. With a resolution of approximately 10 microm, optical coherence tomography (OCT) may be an appropriate imaging modality for visualizing the vascular response to a stent and measuring the percentage of struts covered with an anti-thrombogenic cellular lining. We developed an image analysis program to locate covered and uncovered stent ...
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    8. An automatic algorithm for detecting stent endothelialization from volumetric optical coherence tomography datasets

      Recent research has suggested that endothelialization of vascular stents is crucial to reducing the risk of late stent thrombosis. With a resolution of approximately 10 µm, optical coherence tomography (OCT) may be an appropriate imaging modality for visualizing the vascular response to a stent and measuring the percentage of struts covered with an anti-thrombogenic cellular lining. We developed an image analysis program to locate covered and uncovered stent struts in ...
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    9. Imaging stented tissue engineered blood vessel mimics

      An ideal vascular stent design promotes a thin anti-thrombogenic cellular lining while avoiding restenosis. To assess the utility of their designs, stent manufactures often use destructive techniques such as scanning electron microscopy to measure the percentage of the stent covered with a cellular ... [Proc. SPIE Int. Soc. Opt. Eng. 6858, 68580F (2008)] published Wed Feb 6, 2008.
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    10. Laparoscopic optical coherence tomographic imaging of human ovarian cancer

      Ovarian cancer is the fourth leading cause of cancer-related death among women in the United States. If diagnosed at an early stage, the 5-year survival rate is 94%, but drops to 68% for regional disease and 29% for distant metastasis; only 19% of all cases are diagnosed at the early, localized stag ... [Proc. SPIE Int. Soc. Opt. Eng. 6851, 685107 (2008)] published Tue Feb 5, 2008.
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  2. About Garret T. Bonnema

    Garret T. Bonnema

    Garret Bonnema was a Graduate Research Assistant in Medicine & Biomedical Engineering at the University of Arizona.