Sökning: "pixel sensor"

Visar resultat 6 - 10 av 29 avhandlingar innehållade orden pixel sensor.

  1. 6. DIXI – a Hybrid Pixel Detector for X-ray Imaging

    Författare :Fredrik Edling; Richard Brenner; Leif Gustafsson; Camilla Rönnqvist; Peter Fischer; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation sciences; hybrid pixel detector; photon-counting; X-ray; imaging; simulation; Strålningsvetenskap; Radiation biology; Strålningsbiologi;

    Sammanfattning : Medical X-ray imaging is an important tool in diagnostic radiology. The ionising-radiation dose to the patient is justified by the clinical benefit of the examination. Nonetheless, detectors that operate at even lower doses and provide more information to the radiologist are desired. LÄS MER

  3. 7. A/D Conversion for Sensor Systems

    Författare :Jan-Erik Eklund; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Today, an important field for circuit design research is advanced mixed mode CMOS circuits for the most varying purposes. By designing these for implementation in basic and cheap digital technologies, building blocks for advanced systems are achieved. LÄS MER

  4. 8. Modeling the Performance of a Hybrid Pixel Detector for Digital X-ray Imaging

    Författare :Lilián del Risco Norrlid; Kjell Fransson; Massimo Caccia; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation sciences; Hybrid pixel detector; X-ray imaging; simulations; cascaded linear-systems; Strålningsvetenskap; Radiation biology; Strålningsbiologi;

    Sammanfattning : The development of digital detectors for X-ray imaging in medical diagnostics receives an increasing amount of attention. The detector under development at the Department of Radiation Sciences at Uppsala University is a hybrid pixel detector, which consists of a semiconductor sensor mounted onto a readout chip. LÄS MER

  5. 9. Optical Imaging for Nanowire Mechanics

    Författare :Monica Lexholm; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; sensor applications; optical imaging; nanowire mechanics; Fysicumarkivet A:2010:Lexholm;

    Sammanfattning : In this work, we present a stroboscopic detection technique for the study of oscillating nanoscale objects. This optical read-out gives a position accuracy better than 1 nm which is a fraction of both the diffraction limit and the pixel size. LÄS MER

  7. 10. Architecture and circuit design of photon counting readout for X-ray imaging sensors

    Författare :Suliman A Abdalla; Bengt Oelmann; Kenway Smith; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Sammanfattning : Hybrid pixel array detectors for X-ray imaging are based on different technologies for sensor and readout electronics. The readout electronics are based on standard CMOS technologies that are experiencing continuously rapid improvements by means of down-scaling the feature sizes, which in turn lead to higher transistor densities, lower power consumption, and faster circuits. LÄS MER