1. Articles from Nishant Mohan

    1-16 of 16
    1. Principal/Senior Optical Engineer at Tesseract

      Principal/Senior Optical Engineer at Tesseract

      Location: TBD About Us Tesseract’s mission is to democratize healthcare delivery to everyone on a global scale. We are reinventing medical devices to leverage the health information in the human eye and championing a new era of healthcare by creating portable, affordable, easy to use, connected devices for early disease detection and monitoring. Tesseract is well-funded and recently raised a series B round of $80M. We are part of 4Catalyzer - a rapidly growing health-tech incubator founded by Dr. Jonathan Rothberg, an award-winning scientist and highly successful serial entrepreneur. Our 4Catalyzer sister companies include Butterfly Network, the first whole-body Ultrasound-on-Chip ...

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    2. Principal/Senior Imaging Systems Engineer at Tesseract

      Principal/Senior Imaging Systems Engineer at Tesseract

      Location: TBD About Us Tesseract’s mission is to democratize healthcare delivery to everyone on a global scale. We are reinventing medical devices to leverage the health information in the human eye and championing a new era of healthcare by creating portable, affordable, easy to use, connected devices for early disease detection and monitoring. Tesseract is well-funded and recently raised a series B round of $80M. We are part of 4Catalyzer - a rapidly growing health-tech incubator founded by Dr. Jonathan Rothberg, an award-winning scientist and highly successful serial entrepreneur. Our 4Catalyzer sister companies include Butterfly Network, the first whole-body Ultrasound-on-ChipTM ...

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    3. Senior Software Engineer Or Software Engineer Opening at PhotoniCare

      Senior Software Engineer Or Software Engineer Opening at PhotoniCare

      PhotoniCare is a fast-growing VC funded MedTech company with a mission to improve health outcomes using cutting edge technology. We have developed the first FDA-cleared OCT-based imaging system, TOMi Scope, for assisting diagnosis of ear infections, a condition that affects 80% of children. The company operates with a philosophy of providing a fun, exciting and collaborative work environment for all team members. PhotoniCare also makes dedicated efforts towards professional and personal growth of all its team. We are looking for a software engineer to join our team and lead the efforts related to development of TOMi Scope software that interfaces ...

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      Mentions: FDA PhotoniCare
    4. OCT and Ophthalmology in the Age of Artificial Intelligence, Tuesday Oct 8, 2019 1:00P EDT

      OCT and Ophthalmology in the Age of Artificial Intelligence, Tuesday Oct 8, 2019 1:00P EDT

      This webinar will provide an executive overview for leaders in imaging and ophthalmology on how artificial intelligence (AI) is transforming the field of medical imaging. Presenter Nishant Mohan will provide a hands-on demonstration of how to develop a deep-learning AI system from scratch, giving attendees critical insight into how to use this powerful tool. Separating the hype from reality, Mohan will discuss essential concepts behind the revolutionizing power of AI. In addition, he will present critical factors in the ecosystem that is driving AI technology and major AI platforms. He will provide specific examples of the application of AI in ...

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    5. AO-OCT Comes into Focus

      AO-OCT Comes into Focus

      Adaptive optics (AO) technology is often used to correct for wavefront distortions imparted when light travels through complex optical systems, enhancing image resolution and facilitating diffraction-limited optics. It has played a particularly prominent role in ophthalmic imaging, where retinal tissue imaging is limited by inherent aberrations in the eye. Given the widespread adoption of OCT in clinical diagnostics over the last 20 years, these two techniques should be natural partners. But because of technological limitations on both sides, practical applications of AO-OCT have been difficult to implement. Improved imaging AO refers to a family of techniques used for correcting distortions ...

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    6. Advances in Optical Coherence Tomography

      Advances in Optical Coherence Tomography

      Optical coherence tomography (OCT) is a high-resolution, three-dimensional, noninvasive imaging technique. It is often called an optical ultrasound because it relies on time-of-flight information, similar to ultrasound imaging, to obtain subsurface information. The success of this technique has been fueled by a unique combination of technical and commercial factors, which include major investment in lasers, optical fibers, and sensors for telecommunications. That OCT is benefitting from these advances is proven in its applications across the health care industry. With close to a billion-dollar market size, OCT is seeing increased acceptance in areas such as interventional cardiology, dermatology, and ophthalmology, and ...

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    7. Vying for Dominance: Swept-Source vs. Spectral-Domain OCT

      Vying for Dominance: Swept-Source vs. Spectral-Domain OCT

      Optical coherence tomography (OCT) is among the most widely used in vivo optical diagnostic techniques. This high-resolution 3D imaging modality, with market size approaching $1 billion, has established itself as an indispensable tool for ophthalmology and is seeing growing acceptance in interventional cardiology, dermatology and nondestructive testing. OCT combines micron-level resolution with high speed and penetration up to 2 to 3 mm in the scattering tissue. In addition, instrumentation is relatively inexpensive and portable when compared to other 3D medical imaging modalities, such as MRI and CT. Figure 1. An example of using SS-OCT for studying therapeutic potential of allogeneic ...

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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. Global Sales and Account Manager: Optical Imaging at Wasatch Photonics

      Global Sales and Account Manager: Optical Imaging at Wasatch Photonics

      Wasatch Photonics is the leading manufacturer of volume phase gratings with corporate offices located in Logan, Utah. WP also designs and manufactures spectroscopic and optical coherence tomography devices at our facility in Durham, North Carolina. We are seeking an experienced and dynamic person to lead our global sale and manage the accounts for Optical Coherence Tomography division. This position will be located at our Durham facility and require extensive travel. Duties: Generate leads and explore new sales channels for the high-end optical imaging systems. Work with company’s worldwide distributors. Gain and understand product strengths and learn about key application ...

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    10. Wasatch Photonics launches travel grants to celebrate International Year of Light

      Wasatch Photonics launches travel grants to celebrate International Year of Light

      Wasatch Photonics Inc. , a leading provider for gratings, spectrometer and optical coherence tomography instrumentation, is celebrating the International Year of Light and Light-based Technologies by launching its Travel and Publication Grant Program. The United Nations General Assembly proclaimed 2015 to be the International Year of Light and Light-based Technologies in December 2013. Mike Sullivan, general manager of Wasatch Photonics, said the Wasatch program supports research exchange by providing special grants to some of its customers for travel to academic meetings and publications. "The grants will support part of travel or publication cost. Wasatch has made it clear that while the ...

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    11. Quantitative optical inspection of contact lenses immersed in wet cell using swept source OCT

      Quantitative optical inspection of contact lenses immersed in wet cell using swept source OCT

      We demonstrate swept source optical coherence tomography (OCT) imaging of contact lenses (CLs) in a wet cell and comprehensive quantitative characterization of CLs from volumetric OCT datasets. The approach is based on a technique developed for lens autopositioning and autoleveling enabled by lateral capillary interactions between the wet cell wall and the lens floating on the liquid surface. The demonstrated OCT imaging has enhanced contrast due to the application of a scattering medium and it improves visualization of both CL interfaces and edges. We also present precise and accurate three-dimensional metrology of soft and rigid CLs based on the OCT ...

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    12. Wastach Photonics Launches Handheld OCT and Fundus Imager for Veterinary Ophthalmology Applications

      Wastach Photonics Launches Handheld OCT and Fundus Imager for Veterinary Ophthalmology Applications

      Wasatch Photonics, along with its distribution partner Ocuscience, is launching iVivo VET, a handheld OCT and fundus imager for veterinary applications. This device combines the capabilities of high resolution ophthalmoscope with the detailed imaging of optical coherence tomography (OCT) for large animals. iVivo VET quickly captures extraordinary eye images by overlaying the OCT scans on real-time retina images. The result is unprecedented accurate tissue data collection that provides greater insight into the eye. The iVivo system gives customers powerful imaging capabilities: “Angle to Angle” cornea images High resolution fundus camera, retina OCT, and anterior segment OCT 50° wide view fundus ...

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    13. Principal-component-analysis-based estimation of blood flow velocities using optical coherence tomography intensity signals

      Principal-component-analysis-based estimation of blood flow velocities using optical coherence tomography intensity signals

      The intensity signal in optical coherence tomography contains information about the translational velocity of scatterers, and can be used to quantify blood flow. We apply principal component analysis to efficiently extract this information. We also study use of nonuniform temporal sampling of the intensity signal to increase the range of quantifiable flow velocities. We demonstrate this technique in simulation, phantom and in vivo blood flow measurements, and highlight its potential to enable three-dimensional wide-field mapping of blood flow using OCT.

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    14. Compressed sensing in optical coherence tomography

      Compressed sensing in optical coherence tomography

      Optical coherence tomography (OCT) is a valuable technique for non-invasive imaging in medicine and biology. In some applications, conventional time-domain OCT (TD-OCT) has been supplanted by spectral-domain OCT (SD-OCT); the latter uses an apparatus that contains no moving parts and can achieve orders of magnitude faster imaging. This enhancement comes at a cost, however: the CCD array detectors required for SD-OCT are more expensive than the simple photodiodes used in TD-OCT. We explore the possibility of extending the notion of compressed sensing (CS) to SD-OCT, potentially allowing the use of smaller detector arrays. CS techniques can yield accurate signal reconstructions ...

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    15. Ultrabroadband coherence-domain imaging using parametric downconversion and superconducting single-photon detectors at 1064 nm

      Coherence-domain imaging systems can be operated in a single-photon-counting mode, offering low detector noise; this in turn leads to increased sensitivity for weak light sources and weakly reflecting samples. We have demonstrated that excellent axial resolution can be obtained in a photon-counting coherence-domain imaging (CDI) system that uses light generated via spontaneous parametric downconversion (SPDC) in a chirped periodically poled stoichiometric lithium tantalate (chirped-PPSLT) structure, in conjunction with a niobium nitride superconducting single-photon detector (SSPD). The bandwidth of the light generated via SPDC, as well as the bandwidth over which the SSPD is sensitive, can extend over a wavelength region ...

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    16. Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors

      Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors

      We consider the use of single-photon counting detectors in coherence-domain imaging. Detectors operated in this mode exhibit reduced noise, which leads to increased sensitivity for weak light sources and weakly reflecting samples. In particular, we experimentally demonstrate the possibility of ... [Opt. Express 16, 18118-18130 (2008)]

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    1-16 of 16
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  2. Topics in the News

    1. (8 articles) Wasatch Photonics
    2. (4 articles) FDA
    3. (3 articles) Boston University
    4. (2 articles) Tesseract Health
    5. (1 articles) University of Central Florida
    6. (1 articles) Harvard University
    7. (1 articles) Massachusetts General Hospital
    8. (1 articles) University of Wisconsin
    9. (1 articles) University of Rochester
    10. (1 articles) Ocuscience
    11. (1 articles) Kyoto University Graduate School of Medicine
    12. (1 articles) Carl Zeiss Meditec
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    Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors Compressed sensing in optical coherence tomography Principal-component-analysis-based estimation of blood flow velocities using optical coherence tomography intensity signals Wastach Photonics Launches Handheld OCT and Fundus Imager for Veterinary Ophthalmology Applications Quantitative optical inspection of contact lenses immersed in wet cell using swept source OCT Wasatch Photonics launches travel grants to celebrate International Year of Light Global Sales and Account Manager: Optical Imaging at Wasatch Photonics OCT Application Engineer: Wasatch Photonics - North Carolina Vying for Dominance: Swept-Source vs. Spectral-Domain OCT Quantification of biomechanical properties of human corneal scar using acoustic radiation force optical coherence elastography Longitudinal changes in complete avascular area assessed using anterior segmental optical coherence tomography angiography in filtering trabeculectomy bleb Quantitative Analysis of Radial Peripapillary Capillary Network in Patients With Papilledema Compared with Healthy Subjects Using Optical Coherence Tomography Angiography