Sökning: "Linearity Tests"

Visar resultat 21 - 22 av 22 uppsatser innehållade orden Linearity Tests.

  1. 21. Evaluation of Geometric Accuracy and Image Quality of an On-Board Imager (OBI)

    Uppsats för yrkesexamina på grundnivå, Medicinsk strålningsfysik (tills m KI)

    Författare :Milos Djordjevic; [2007]
    Nyckelord :Image-guided radiotherapy; Cone-beam CT; OBI; Quality Assurance;

    Sammanfattning : In this project several tests were performed to evaluate the performance of an On-Board Imager® (OBI) mounted on a clinical linear accelerator. The measurements were divided into three parts; geometric accuracy, image registration and couch shift accuracy, and image quality. LÄS MER

  3. 22. Crack Detection using Non-linear and Dissipative Acoustics

    Magister-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Daniel Carldén; Daniel Thuresson; [1998]
    Nyckelord :Non-linear acoustics; Non-linear parameter; Burger s equation; Bessel-Fubini; Fay; Mendousse; Hedberg; Non-destructive testing NDT ; Non-destructive Evaluation NDE ; crack detection.;

    Sammanfattning : A theoretical model for identification of acoustical non-linearity using Burger's equation was implemented in a MATLAB program. The program identified both the non-linearity parameter and the distance from the signal source. Tests were performed in order to verify the theories. LÄS MER