Sökning: "Mats Danielsson"

Visar resultat 1 - 5 av 24 avhandlingar innehållade orden Mats Danielsson.

1. 1. Spectral Computed Tomography with a Photon-Counting Silicon-Strip Detector

   Författare :Mats Persson; Mats Danielsson; Hans Bornefalk; Jiang Hsieh; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photon-counting; silicon-strip detector; spectral computed tomography; ring artifacts; fluence rate; basis material decomposition; sub-pixel information; Fysik; Physics;

   Sammanfattning : Computed tomography (CT) is a widely used medical imaging modality. By rotating an x-ray tube and an x-ray detector around the patient, a CT scanner is able to measure the x-ray transmission from all directions and form an image of the patient’s interior. LÄS MER

3. 2. Spectral image quality and applications in breast tomosynthesis

   Författare :Karl Berggren; Mats Danielsson; Mats Lundqvist; Erik Fredenberg; Paul E. Kinahan; KTH; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medical Technology; Medicinsk teknologi;

   Sammanfattning : In the 1970s, it was determined that screening mammography is an efficient tool in fighting the increasing number of women dying from breast cancer, and many countries have established screening programs since then. Mammography systems have improved substantially over the years with one of the major advances being the transition from x-ray film to digital x-ray detectors. LÄS MER

4. 3. Spectral Photon-Counting Computed Tomography with Silicon Detectors: New Models and Applications

   Författare :Fredrik Grönberg; Mats Danielsson; Mats Persson; Amir Pourmorteza; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photon-counting; spectral computed tomography; material decomposition; pulse pileup; Compton scatter; image formation; fotonräknande; spektral datortomografi; materialbasupdelning; pulsöverlagring; Comptonspridning; bildbildning; Physics; Fysik;

   Sammanfattning : X-ray computed tomography (CT) is a widely used imaging modality that enables visualization of nearly every part of the human body. It is used for diagnosis of disease and injury as well as medical treatment planning. LÄS MER

5. 4. Decision making in emergency management

   Författare :Mats Danielsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk psykologi; Engineering Psychology;

   Sammanfattning : The thesis is based on two studies conducted on behalf of the Swedish Emergency Services Agency. One study focused on the problems associated with selection and training of future emergency directors in Sweden. The other study surveyed the emergency directors’ needs for decision support systems in major accidents. LÄS MER

7. 5. Det teckenspråkiga klassrummet : en arena för möte mellan elever och lärare

   Författare :Louise Danielsson; Margareta Ahlström; Siv Fischbein; Mats Granlund; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; classroom interaction; deaf and hearing teacher; deaf pupils; sign language; educational interaction model; gender; special school; specialpedagogik; Special Education;

   Sammanfattning : The aim of this study is to investigate the interaction in sign language in a classroom in the special school for deaf and hard of hearing pupils. Three questions are of particular interest: What characterizes interaction in educational situations where the whole class is present compared to half the class and when the pupils in small groups are solving problems given by the teacher? How are a hearing and a deaf teacher interacting in the classroom? And How are boys and girls interacting in different educational situations?Theoretically the study is based on an educational interaction model. LÄS MER