Essays about: "photon-counting detectors"

Showing result 11 - 15 of 17 essays containing the words photon-counting detectors.

  1. 11. Estimation of Noise and Contrast for CTA of the Brain

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Johannes Loberg; Miranda Gisudden; [2018]
    Keywords : CT - Computed Tomography - CTA- Computed Tomography Angiography - Photon Counting - CNR - Contrast to noise;

    Abstract : Computed tomography angiography (CTA) of the brain poses challenges on the imaging system; the contrast between blood vessels and surrounding soft tissue is very low, and to render small intricate vessel structures high spatial resolution is needed. Higher precision angiography would facilitate more accurate diagnosis of pathological conditions. READ MORE

  3. 12. Edge Illumination technique using direct conversion photon counting detectors for X-ray Phase Contrast imaging

    University essay from KTH/Fysik

    Author : Chechet Ksenia; [2015]
    Keywords : ;

    Abstract : .... READ MORE

  4. 13. Compressed Sensing for 3D Laser Radar

    University essay from Linköpings universitet/Datorseende; Linköpings universitet/Tekniska högskolan

    Author : Erik Fall; [2014]
    Keywords : compressed sensing; compressed sampling; TCSPC; TV minimization; l1 minimization; DMD;

    Abstract : High resolution 3D images are of high interest in military operations, where data can be used to classify and identify targets. The Swedish defence research agency (FOI) is interested in the latest research and technologies in this area. A draw- back with normal 3D-laser systems are the lack of high resolution for long range measurements. READ MORE

  5. 14. Imaging stellar surfaces with intensity interferometry

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Lagadec Tiphaine; [2014]
    Keywords : Interferometry; Intensity interferometry; Second order coherence; Aperture synthesis; High resolution imaging; Stellar surfaces imaging; Cherenkov Telescope Array.; Physics and Astronomy;

    Abstract : Context. Intensity interferometry was invented and used by R.Hanbury Brown and R.Q. READ MORE

  6. 15. Optimization of Dual Energy data acquisition using CdTe-detectors with electronic spectrum splitting

    University essay from Tekniska högskolan; Biomedicinsk instrumentteknik

    Author : Charlotte Eriksson; [2013]
    Keywords : Dual Energy; CdTe; X-ray; photon-counting detectors;

    Abstract : Dual energy imaging has made it possible to enhance contrast in medical images using images containing different energy information, by combining low and high energy images. Dual energy data can either be acquired using double exposures or splitting the energy spectrum into two images using one exposure. READ MORE