1. Indian Institute of Technology at Delhi

    0 Comments Leave a Comment

    1-15 of 30 1 2 »
    1. Mentioned In 30 Articles

    2. Influence of laser spot size at diffuser plane on the longitudinal spatial coherence function of optical coherence microscopy system

      Influence of laser spot size at diffuser plane on the longitudinal spatial coherence function of optical coherence microscopy system
      Coherence properties and wavelength of light sources are indispensable for optical coherence microscopy/tomography (OCM/T) as they greatly influence the signal to noise ratio, axial resolution, and penetration depth of the system. In the present letter, we investigated the longitudinal spatial coherence properties of pseudo/thermal light source (PTS) as a function of spot size at the diffuser plane, which is controlled by translating microscope objective lens towards or ...
      Read Full Article
    3. Ensemble classifier for improve diagnosis of the breast cancer using optical coherence tomography and machine learning

      Ensemble classifier for improve diagnosis of the breast cancer using optical coherence tomography and machine learning
      The second most leading cause of death in women is breast cancer even after surgery 20%30% patients require re-surgery for the removal of the incomplete malignant tissue. To reduce the risk of recurrence exact navigation during surgery is essential. In this paper, a multi-level ensemble model is developed to classify the normal and cancerous breast tissue using features extracted from optical coherence tomography images. Both A-line and B-scan features ...
      Read Full Article
    4. Volumetric analysis of breast cancer tissues using machine learning and swept-source optical coherence tomography

      Volumetric analysis of breast cancer tissues using machine learning and swept-source optical coherence tomography
      In breast cancer, 20%30% of cases require a second surgery because of incomplete excision of malignant tissues. Therefore, to avoid the risk of recurrence, accurate detection of the cancer margin by the clinician or surgeons needs some assistance. In this paper, an automated volumetric analysis of normal and breast cancer tissue is done by a machine learning algorithm to separate them into two classes. The proposed method is based ...
      Read Full Article
    5. Deep learning architecture “LightOCT” for diagnostic decision support using optical coherence tomography images of biological samples

      Deep learning architecture “LightOCT” for diagnostic decision support using optical coherence tomography images of biological samples
      Optical coherence tomography (OCT) is being increasingly adopted as a label-free and non-invasive technique for biomedical applications such as cancer and ocular disease diagnosis. Diagnostic information for these tissues is manifest in textural and geometric features of the OCT images which are used by human expertise to interpret and triage. However, it suffers delays due to long process of conventional diagnostic procedure and shortage of human expertise. Here, a custom ...
      Read Full Article
    6. Automated high resolution full-field spatial coherence tomography for quantitative phase imaging of human red blood cells

      Automated high resolution full-field spatial coherence tomography for quantitative phase imaging of human red blood cells
      We developed an automated high-resolution full-field spatial coherence tomography (FF-SCT) microscope for quantitative phase imaging that is based on the spatial, rather than the temporal, coherence gating. The Red and Green color laser light was used for finding the quantitative phase images of unstained human red blood cells (RBCs). This study uses morphological parameters of unstained RBCs phase images to distinguish between normal and infected cells. We recorded the single ...
      Read Full Article
    7. Feasibility of speckle variance OCT for imaging cutaneous microvasculature regeneration during healing of wounds in diabetic mice

      Feasibility of speckle variance OCT for imaging cutaneous microvasculature regeneration during healing of wounds in diabetic mice
      We report on a study to assess the feasibility of a swept source-based speckle variance optical coherence tomography setup for monitoring cutaneous microvasculature. Punch wounds created in the ear pinnae of diabetic mice were monitored at different times post wounding to assess the structural and vascular changes. It was observed that the epithelium thickness increases post wounding and continues to be thick even after healing. Also, the wound size assessed ...
      Read Full Article
    8. In vivo classification of human skin burns using machine learning and quantitative features captured by optical coherence tomography

      In vivo classification of human skin burns using machine learning and quantitative features captured by optical coherence tomography
      We report the first fully automated detection of human skin burn injuries in vivo , with the goal of automatic surgical margin assessment based on optical coherence tomography (OCT) images. Our proposed automated procedure entails building a machine-learning-based classifier by extracting quantitative features from normal and burn tissue images recorded by OCT. In this study, 56 samples (28 normal, 28 burned) were imaged by OCT and eight features were extracted. A ...
      Read Full Article
    9. Spectropathology-corroborated multimodal quantitative imaging biomarkers for neuroretinal degeneration in diabetic retinopathy

      Spectropathology-corroborated multimodal quantitative imaging biomarkers for neuroretinal degeneration in diabetic retinopathy
      ...a; 2Johns Hopkins University School of Medicine, Baltimore, MD, USA; 3Advanced Technology Development Centre, Indian Institute of Technology-Kharagpur, Kharagpur, West Bengal, India; 4Department of Computer and Electrica...
      Read Full Article
    10. Full resolution Fourier domain optical coherence tomography

      Full resolution Fourier domain optical coherence tomography
      The complex conjugate ambiguity in Fourier domain optical coherence tomography (FDOCT) is a major roadblock that prevents full-detector resolution for the depth scan in single shot operation for the individual A-scan. Current techniques to eliminate this problem involve changing the experimental set-up, usually complicating the OCT system. In this work we show that the standard FDOCT spectrum data when resampled appropriately can be cast exactly in terms of type-1 discrete ...
      Read Full Article
    11. Reflection, phase and en -face sectional imaging of scattering objects using quasi-single-shot wide-field optical coherence tomography

      Reflection, phase and en -face sectional imaging of scattering objects using quasi-single-shot wide-field optical coherence tomography
      We report a quasi-single-shot wide-field optical coherence tomography system that enables to measure the reflection, phase and en - face OCT images from the same setup using the glass jig. The jig consisting of a wedge glass substrate and a glue dot is contacted to the tissue surfaces, and the data within glue dot is used to reduce the phase noise of the interference signal. The reconstructed image size of the ...
      Read Full Article
    12. Improvement of the dynamic range using background subtraction in single shot wide-field optical coherence tomography

      Improvement of the dynamic range using background subtraction in single shot wide-field optical coherence tomography
      We investigated on the signal in single shot wide-field optical coherence tomographic (SS-WF-OCT) system to improve the dynamic range (DR). The SS-WF-OCT system is based on two-dimensional (2D) polarization Michelson interferometer and superluminescent diode (center wavelength of 842.5nm) as light source. Two-phase-shifted interferograms were acquired simultaneously using a single CCD camera and after subtraction, theen-faceOCT image (area (x) 4.0mm(y) 4.3mm) is obtained using 2D Hilbert transform ...
      Read Full Article
    13. 1-15 of 30 1 2 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. About Indian Institute of Technology at Delhi

    Indian Institute of Technology at Delhi

    Indian Institute of Technology at Delhi.   Instrument Design and Development Center at IIT Delhi. Indian Institute of Technology Delhi is one of the seven Institutes of Technology created as centres of excellence for higher training, research and development in science, engineering and technology in India, the others being at Kanpur, Kharagpur, Madras, Bombay, Guwahati and Roorkee. Established as College of Engineering in 1961, the Institute was later declared an Institution of National Importance under the "Institutes of Technology (Amendment) Act, 1963" and was renamed "Indian Institute of Technology Delhi". It was then accorded the status of a deemed university with powers to decide its own academic policy, to conduct its own examinations, and to award its own degrees.  HRH Prince Philip, the Duke of Edinburgh, laid the foundation stone of the Institute on January 27, 1959. The Institute was inaugurated by Prof.Humayun Kabir, the then Union Minister for Scientific Research and Cultural Affairs on August 21, 1961. The Institute buildings were formally opened by Dr.Zakir Hussain, the then President of India, on March 2, 1968.