1. Featured Articles

    1-14 of 14
    1. Optometry-facilitated teleophthalmology: an audit of the first year in Western Australia

      Optometry-facilitated teleophthalmology: an audit of the first year in Western Australia

      Background Lions Outback Vision has run a state-wide teleophthalmology service since 2011. In September 2015 the Australian federal government introduced a Medicare reimbursement for optometry-facilitated teleophthalmology consultations under specific circumstances. This audit demonstrates the first 12 months experience with this scheme. We aim to provide practical insights for others looking to embed a telemedicine program as part of delivering outreach clinical services. Methods A 12-month retrospective audit was performed between September 2015 and August 2016, inclusive. A research officer used a specifically designed data extraction tool to record information from all teleophthalmology consultations performed in the time period. The primary ...

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    2. Summary of Information: Introducing ADQ14OCT – A 14-bit digitizer optimized for Swept-Source Optical Coherence Tomography

      Summary of Information: Introducing ADQ14OCT – A 14-bit digitizer optimized for Swept-Source Optical Coherence Tomography

      Signal Processing Devices, a manufacturer of high-performance digitizers today announces the release of ADQ14OCT , the latest member of the successful ADQ14 14-bit digitizer family. The ADQ14OCT is optimized for use in SS-OCT applications and contains all features necessary to support the acquisition of cross-sectional and volume images. The ADQ14OCT digitizer supports a variable-frequency clocking from a laser K-clock starting at 10 MHz and going up to 1000 MHz and high-dynamic range capture of full- bandwidth OCT signals. Acquisition of cross-sectional and volume images are easily controlled using the programmable A-scan and B-scan trigger inputs. The ADQ14OCT is available with x8 ...

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    3. PhotoniCare wins Startup Challenge with pitch for non-invasive ear inspection

      PhotoniCare wins Startup Challenge with pitch for non-invasive ear inspection

      CareWear and Orbis take second and third in new-product pitch contest at SPIE Photonics West. Startup winners: 3,2,1: Orbis's Simpson; Clearview's Castel; and PhotoniCare's Shelton. PhotoniCare , a spinout of the University of Illinois at Urbana-Champaign (UIUC), which has developed a handheld, low-cost imaging platform for medical applications such as inspecting the eardrum, was named the winner of the 2018 SPIE Startup Challenge, last week during Photonics West in San Francisco. The ClearViewT, the first product on the Photonicare platform is described as “being able to fundamentally change the way physicians manage middle ear infections, one ...

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    4. Large-volume, low-cost, high-precision FMCW tomography using stitched DFBs

      Large-volume, low-cost, high-precision FMCW tomography using stitched DFBs

      Optical frequency-modulated continuous-wave (FMCW) reflectometry is a ranging technique that allows for high-resolution distance measurements over long ranges. Similarly, swept-source optical coherence tomography (SS-OCT) provides high-resolution depth imaging over typically shorter distances and higher scan speeds. In this work, we demonstrate a low-cost, low-bandwidth 3D imaging system that provides the high axial resolution imaging capability normally associated with SS-OCT over typical FMCW ranging depths. The imaging system combines 12 distributed feedback laser (DFB) elements from a single butterfly module to provide an axial resolution of 27.1 μm over 6 m of depth and up to 14 cubic meters of ...

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    5. Open PhD Position at the Institute of Medical Technology at Hamburg University of Technology

      Open PhD Position at the Institute of Medical Technology at Hamburg University of Technology

      The Institute of Medical Technology at Hamburg University of Technology has an open position for a Research Assistant / PhD candidate. The fulltime position is funded for two years (salary according to level E13, app. 43K EUR p.a.). We have a research focus on robotics and navigation in medicine. In a collaborative research project we are currently studying methods for OCT image guided placement of needles in soft tissue. Using methods from robotics and machine learning you will develop new approaches for acquisition of tissue parameters from within the needle and for precise control of the needle motion. Your tasks ...

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    6. “Bringing on the light” in a complex clinical scenario: Optical coherence tomography–guided discontinuation of antiplatelet therapy in cancer patients with coronary artery disease (PROTECT-OCT registry)

      “Bringing on the light” in a complex clinical scenario: Optical coherence tomography–guided discontinuation of antiplatelet therapy in cancer patients with coronary artery disease (PROTECT-OCT registry)

      Background Cancer patients with recently placed drug-eluting stents (DESs) often require premature dual antiplatelet therapy (DAPT) discontinuation for cancer-related procedures. Optical coherence tomography (OCT) can identify risk factors for stent thrombosis such as stent malapposition, incomplete strut coverage and in-stent restenosis and may help guide discontinuation of DAPT. Methods We conducted a single-center prospective study in cancer patients with recently placed (1-12 months) DES who required premature DAPT discontinuation. Patients were evaluated with diagnostic coronary angiogram and OCT. Individuals with appropriate stent strut coverage, expansion, apposition, and absence of in-stent restenosis or intraluminal masses were considered low risk and transiently ...

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      Mentions: Emerson Perin
    7. High-speed optical coherence tomography by circular interferometric ranging

      High-speed optical coherence tomography by circular interferometric ranging

      Existing three-dimensional optical imaging methods excel in controlled environments, but are difficult to deploy over large, irregular and dynamic fields. This means that they can be ill-suited for use in areas such as material inspection and medicine. To better address these applications, we developed methods in optical coherence tomography to efficiently interrogate sparse scattering fields, that is, those in which most locations (voxels) do not generate meaningful signal. Frequency comb sources are used to superimpose reflected signals from equispaced locations through optical subsampling. This results in circular ranging, and reduces the number of measurements required to interrogate large volumetric fields ...

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    8. OCT Application Engineer: Wasatch Photonics - North Carolina

      OCT Application Engineer: Wasatch Photonics - North Carolina

      Wasatch Photonics is seeking a self-directed and experienced Application Engineer to join our OCT business. The OCT Application Engineering position will be at the center of championing customer needs for OCT offerings. The position will be responsible for meeting customer requests regarding imaging samples, conducting demos, and solving technical problems as needed. The position will develop a key understanding of OCT operation and all critical parameters related to imaging. The successful candidate will report to the VP OCT Business and actively collaborate with all members of the Durham team. Location: Durham, North Carolina. Occasional domestic travel may be required. Responsibilities ...

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    9. Imaging the Whole Human Eye

      Imaging the Whole Human Eye

      Getting the whole picture of the human eye—from front to retina—has required multiple investigations. Now, researchers at two European universities have combined optical coherence tomography (OCT) with an electrically tunable lens to make a system for imaging the entire eye at once (Optica, doi:10.1364/OPTICA.5.000052 ). A new instrument According to the team led by physicist Ireneusz Grulkowski of Nicolaus Copernicus University (Poland), the new adaptive-focusing, non-invasive instrument can provide more detailed images of ocular structures than other systems and could speed up ophthalmic examinations by eliminating the need for physicians to use separate instruments ...

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    10. Post-Doctoral Fellowship on Image Processing (OCT and OCTA) at Oregon Health & Science University

      Post-Doctoral Fellowship on Image Processing (OCT and OCTA) at Oregon Health & Science University

      A postdoctoral research fellowship is immediately available in the Center for Ophthalmic Optics and Lasers, Casey Eye Institute, Oregon Health & Science University. The researcher on this position will work alongside experts in clinical and engineering disciplines to develop image processing algorithms for artifact reduction, registration, segmentation, detection, analysis and modelling of OCT and OCT angiography data. PhD degree in Computer Science, Biomedical Engineering, Electrical Engineering, Physics, Optics or a related field is required. Experience on image processing, modelling algorithms or machine learning is required. Broad experiences with optical systems, signal processing, concepts particularly coherence, interferometry and Fourier transform are also ...

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    11. Topcon's DRI OCT TritonTM Series Receives 510(k) Clearance

      Topcon's DRI OCT TritonTM Series Receives 510(k) Clearance

      Topcon Medical Systems (TMS) of Oakland, NJ is proud to announce that its DRI OCT Triton Series has received 510(k) clearance from the FDA. The DRI OCT Triton features exceptionally easy image capture and a 1 micron, 1050nm light source with a scanning speed of 100,000 A-scans/second. The multi-modal instrument incorporates a built-in retinal camera, eye tracking during capture of selected scans, and combines Topcon's years of expertise in OCT imaging, color, red-free, FA and FAF imaging with the diagnostic power of Swept Source OCT. In addition to anterior segment scanning, the DRI OCT Triton can ...

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    12. Novel endoscope with increased depth of field for imaging human nasal tissue by microscopic optical coherence tomography

      Novel endoscope with increased depth of field for imaging human nasal tissue by microscopic optical coherence tomography

      Intravital microscopy (IVM) offers the opportunity to visualize static and dynamic changes of tissue on a cellular level. It is a valuable tool in research and may considerably improve clinical diagnosis. In contrast to confocal and non-linear microscopy, optical coherence tomography (OCT) with microscopic resolution (mOCT) provides intrinsically cross-sectional imaging. Changing focus position is not needed, which simplifies especially endoscopic imaging. For in-vivo imaging, here we are presenting endo-microscopic OCT (emOCT). A graded-index-lens (GRIN) based 2.75 mm outer diameter rigid endoscope is providing 1.5 – 2 µm nearly isotropic resolution over an extended field of depth. Spherical and chromatic ...

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    13. 3D imaging technology inspects hard-to-reach spaces

      3D imaging technology inspects hard-to-reach spaces

      With recent developments in fiber-based optical 3D metrology , the scope of 3D imaging applications has been expanded to include hard-to-reach spaces such as tubes and bores. 3D imaging can be accomplished in various ways, including single and multi-camera methods, structured light systems, laser triangulation, pattern projection, and those based on the Time of Flight principle. 3D vision systems such as these add a new dimension to machine vision systems, bringing the development of new applications for industry. Advances in high-speed fiber-based low-coherence interferometry, a high-resolution 3D measurement technology, have resulted in the development of new in-line inspection applications. One company ...

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    14. Cycloid scanning for wide field optical coherence tomography endomicroscopy and angiography in vivo

      Cycloid scanning for wide field optical coherence tomography endomicroscopy and angiography in vivo

      Devices that perform wide field-of-view (FOV) precision optical scanning are important for endoscopic assessment and diagnosis of luminal organ disease such as in gastroenterology. Optical scanning for in vivo endoscopic imaging has traditionally relied on one or more proximal mechanical actuators, limiting scan accuracy and imaging speed. There is a need for rapid and precise two-dimensional (2D) microscanning technologies to enable the translation of benchtop scanning microscopies to in vivo endoscopic imaging. We demonstrate a new cycloid scanner in a tethered capsule for ultrahigh speed, side-viewing optical coherence tomography (OCT) endomicroscopy in vivo . The cycloid capsule incorporates two scanners: a ...

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