Essays about: "Ultrasound Optical Tomography"

Found 5 essays containing the words Ultrasound Optical Tomography.

  1. 1. Developing a technique for combining light and ultrasound for deep tissue imaging

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Meng Li; [2018]
    Keywords : UOT; Ultrasound Optical Tomography; Monte Carlo; TCSPC; PTOF; Photon time of flight; Ultrasound; US; AOT; Acousto-optical tomography; Spectral hole burning; SHB; ultrasound modulation; Physics and Astronomy;

    Abstract : Biological tissues are strongly light-scattering and absorbing media that limit the depth of optical-based imaging. Even though, optical imaging provides good optical contrast information of biological content that is beneficial for clinical diagnostics application. READ MORE

  2. 2. Preparation of Materials for Deep Tissue Imaging with Slow Light

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Mengqiao di; [2018]
    Keywords : Ultrasound Optical Tomography; Deep Tissue Imaging; Monte Carlo Simulation; Spectral Hole Burning; Physics and Astronomy;

    Abstract : Ultrasound Optical Tomography (UOT) is a proposed technique, which combines ultrasound imaging and optical imaging in a new way to detect, e.g. READ MORE

  3. 3. Investigation of phase conjugation for medical imaging

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

    Author : Ivan Sytcevich; [2017]
    Keywords : Phase conjugation; Ultrasound Optical Tomography; Rare-Earth-Doped Crystals.; Physics and Astronomy;

    Abstract : With the development of extremely precise spectral filters based on spectral hole burning and slow light effects, the idea of their implementation in an Ultrasound Optical Tomography (UOT) medical imaging technique arose. Simulations have shown that the resulting Contrast-to-Noise (CNR) ratio is fairly good at depths up to 5 cm but decreases dramatically when probing deeper in tissue. READ MORE

  4. 4. Development of a Tunable Frequency Shift Filter Using a Praseodymium Doped Y2SiO5-Crystal

    University essay from Lunds universitet/Fysiska institutionen

    Author : Yupan Bao; [2016]
    Keywords : Ultrasound Optical Tomography UOT ; Off-resonant Slow Light; Filter; Frequency Shifter; Spectral Hole Burning Technique; Rare-earth-ion-doped Crystal; Physics and Astronomy;

    Abstract : In this thesis, a tunable frequency shift filter (FSF) with a 1 ~ 2 MHz passband created in a praseodymium doped Y2SiO5-crystal using a special hole burning technique is developed and tested. The FSF is able to shift the frequency of its passband and the light passing through the passband by applying an external electric field, where the frequency shift is proportional to the applied field. READ MORE

  5. 5. Development of narrow-bandwidth filters for the suppression of scattered light for optical and ultrasound analysis of tissue

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Philip Dalsbecker; [2015]
    Keywords : biophotonics; Maxwell-Bloch equations; tissue; ultrasound; Ultrasound-modulated optical tomography; UOT; Physics and Astronomy;

    Abstract : Ultrasound-modulated optical tomography (UOT) is a proposed diagnostic technique with potential as a means of discovering cancerous tumours. The technique combines ultrasound and laser radiation to probe tissue in a non-invasive, harmless way. READ MORE