Sökning: "MDCT"

Hittade 4 avhandlingar innehållade ordet MDCT.

  1. 1. Pancreatic ductal adenocarcinoma : computed tomography for diagnosis, local staging and prediction of postoperative complications

    Författare :Louiza Loizou; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Pancreatic ductal adenocarcinoma (PDAC) is a disease with a dismal prognosis, being the 4th leading cause of cancer deaths in Sweden and worldwide. The only potentially curative therapy is surgery. Unfortunately, by the time of diagnosis only 20% of patients have a resectable tumor and the overall 5-year survival rate does not exceed 5%. LÄS MER

  3. 2. Evaluation of cone beam computed tomography with respect to effective radiation dose and diagnostic properties

    Författare :Nils Kadesjö; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Cone beam computed tomography (CBCT) is an x-ray modality providing three-dimensional x-ray images. CBCT devices have high resolution compared to traditional medical CT, making them suitable for examination of fine details. LÄS MER

  4. 3. Quantization, Perception and Speech Coding

    Författare :Fredrik Nordén; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis is about compression of speech signals, a research area known as speech coding. The aim of a speech coder is to provide efficient digital representations of speech signals, required in digital transmission and storage systems. Contemporary speech coding algorithms typically separate the speech signal into sets of parameters. LÄS MER

  5. 4. Clinical presentation, prognostic factors and epidemiology of ischemic bowel disease in the very old

    Författare :Maria Wadman; Geriatrik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; multislice CT; abdominal plain film; Ischemic bowel disease; elderly; epidemiology; operations; symptoms;

    Sammanfattning : Background: Acute ischemic bowel disease (AIBD) is a potentially death-threatening vascular emergency predominantly affecting the elderly (>65 years). The prognosis is dismal and early diagnosis and treatment is of vital importance for the outcome. Clinical presentation is unspecific. The five studies were retrospective. LÄS MER