1. Articles from Nima Tabatabaei

    1-6 of 6
    1. Comparative study on the detection of early dental caries using thermo-photonic lock-in imaging and optical coherence tomography

      Comparative study on the detection of early dental caries using thermo-photonic lock-in imaging and optical coherence tomography

      Early detection of dental caries is known to be the key to the effectiveness of therapeutic and preventive approaches in dentistry. However, existing clinical detection techniques, such as radiographs, are not sufficiently sensitive to detect and monitor the progression of caries at early stages. As such, in recent years, several optics-based imaging modalities have been proposed for the early detection of caries. The majority of these techniques rely on the enhancement of light scattering in early carious lesions, while a few of them are based on the enhancement of light absorption at early caries sites. In this paper, we report ...

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    2. Clinical Translation of Tethered Confocal Microscopy Capsule for Unsedated Diagnosis of Eosinophilic Esophagitis

      Clinical Translation of Tethered Confocal Microscopy Capsule for Unsedated Diagnosis of Eosinophilic Esophagitis

      Esophagogastroduodenoscopy (EGD) is a widely used procedure, posing significant financial burden on both healthcare systems and patients. Moreover, EGD is time consuming, sometimes difficult to tolerate, and suffers from an imperfect diagnostic yield as the limited number of collected biopsies does not represent the whole organ. In this paper, we report on technological and clinical feasibility of a swallowable tethered endomicroscopy capsule, which is administered without sedation, to image large regions of esophageal and gastric mucosa at the cellular level. To demonstrate imaging capabilities, we conducted a human pilot study (n = 17) on Eosinophilic Esophagitis (EoE) patients and healthy volunteers ...

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    3. Post-Doctoral Fellowship at York University (Canada) – Optical Coherence Tomography

      Post-Doctoral Fellowship at York University (Canada) – Optical Coherence Tomography

      A Postdoctoral research fellowship in the area of optical coherence tomography (OCT) and clinical device R&D is available in the Hybrid Biomedical Optics Lab (York University, Canada). The fellowship focuses on development of novel photothermal imaging technologies based on OCT and radiometry for diagnostic imaging of soft and hard tissues. The fellowship can be extended up to 3 years . Job Requirements : A PhD (or equivalent) in Electrical Engineering, Physics or a related field is required. Demonstrated excellence in one or more of the following areas is required: optical coherence tomography, optical imaging systems, optical design, optical system fabrication, fiber ...

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    4. PhD Student Position in the Field of Photo-Thermal Optical Coherence Tomography at York University (Canada)

      PhD Student Position in the Field of Photo-Thermal Optical Coherence Tomography at York University (Canada)

      PhD student positions are immediately available in the Hybrid Biomedical Optics Lab (York University, Canada) in the field of optical coherence tomography. HBO Lab’s vision is to overcome the diagnostic shortcomings of the conventional reflectance optical imaging methods by development and advancement of hybrid optical imaging platforms (www.HBOLab.ca). The laboratory is looking for highly motivated students with background in theoretical and experimental optics. Experience in one or more of the following areas is desired: OCT and optical imaging systems, optical design, lasers, fiber optics, digital signal processing, LabView or C++ programming, and circuit design. Positions are fully ...

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    5. Optimal selection of laser modulation parameters in photothermal optical coherence tomography

      Optimal selection of laser modulation parameters in photothermal optical coherence tomography

      Photothermal optical coherence tomography (PT-OCT) employs a secondary intensity-modulated photothermal laser to create modulated thermal strains that cause variations of the refractive index in the proximity of absorbing chromophores. These variations are directly detected with phase-sensitive OCT and offer insight to the molecular composition and thermo-elastic properties of the sample. Here, we define optimal PT laser modulation parameters by investigating the effect of PT laser power and modulation frequency on the ensuing thermal waves and thermal waves’ impact on the spatial resolution of PT-OCT imaging based on numerical simulations of PT-OCT and samples containing point absorbers.

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    6. PhD Opening at York University in Canada

      PhD Opening at York University in Canada

      PhD student positions are immediately available in the Hybrid Biomedical Optics Lab (York University, Canada) on the field of optical coherence tomography. HBO Lab’s vision is to overcome the diagnostic shortcomings of the conventional reflectance optical imaging methods by development and advancement of hybrid optical imaging platforms ( www.HBOLab.ca ). The laboratory is looking for highly motivated students with background in theoretical and experimental optics. Experience in one or more of the following areas is desired: OCT and optical imaging systems, optical design, lasers, fiber optics, digital signal processing, LabView or C++ programming, and circuit design. Positions are fully ...

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    1-6 of 6
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  2. Topics in the News

    1. (2 articles) Massachusetts General Hospital
    2. (2 articles) Harvard University
    3. (1 articles) Martin L. Villiger
    4. (1 articles) Guillermo J. Tearney
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    PhD Opening at York University in Canada Optimal selection of laser modulation parameters in photothermal optical coherence tomography PhD Student Position in the Field of Photo-Thermal Optical Coherence Tomography at York University (Canada) Post-Doctoral Fellowship at York University (Canada) – Optical Coherence Tomography Clinical Translation of Tethered Confocal Microscopy Capsule for Unsedated Diagnosis of Eosinophilic Esophagitis Comparative study on the detection of early dental caries using thermo-photonic lock-in imaging and optical coherence tomography Optical coherence tomography angiography of foveal neovascularisation in proliferative diabetic retinopathy Treating port wine stain birthmarks using dynamic optical coherence tomography-guided setting Repeatability of quantitative measurements of retinal layers with SD-OCT and agreement between vertical and horizontal scan protocols in healthy eyes Perimeter Medical Imaging Closes Oversubscribed $C4.4M Financing Time-domain optical coherence tomography system based on moving-optical-wedge interferometer ML and AI: At the Forefront of Ophthalmology