Search for dissertations about: "Contrast enhanced computed tomography"

Showing result 1 - 5 of 20 swedish dissertations containing the words Contrast enhanced computed tomography.

2. 1. Low kilovoltage computed tomography to reduce contrast medium dose in patients at risk of acute kidney injury

   Author : Fredrik Holmquist; Lund Diagnostisk radiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Computed tomography; Image quality; Radiation dosimetry; contrast medium induced nephropathy; Iterative reconstruction algorithms;

   Abstract : Background: Patients with reduced renal function may be at risk of contrast medium-induced acute kidney injury (CI-AKI) following intravenous iodine contrast medium (CM) enhanced computed tomography (CT). Reducing the CM dose may reduce this risk. READ MORE

4. 2. Contrast-enhanced ultrasound in children

   Author : Alvaro Torres Urzua; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Background: Contrast-enhanced ultrasound (CEUS) is a diagnostic tool that is used for many applications in adults. Many of these applications are considered “off-label” use but still play an important role in diagnostic imaging. READ MORE

5. 3. Acute Colonic Diverticulitis : The role of computed tomography in primary diagnosis, prediction of complications and surgical intervention

   Author : Arnar Thorisson; Abbas Chabok; Torkel Brismar; Uppsala universitet; []
   Keywords : Colonic diverticulitis; complicated diverticulitis; computed tomography; low-dose CT; Radiology; Radiologi; Surgery; Kirurgi;

   Abstract : The overall aim of this thesis was to expand the current knowledge regarding the advantages and limitations of computed tomography (CT) for patients with acute diverticulitis and evaluate outpatient treatment for uncomplicated diverticulitis.Paper I: A retrospective evaluation of 602 patients with reported uncomplicated diverticulitis. READ MORE

6. 4. Small-Animal Imaging with Liquid-Metal-Jet X-Ray Sources

   Author : Daniel Larsson; Hans Hertz; Anna Burvall; David Paterson; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; X-ray; x-ray imaging; small animal; phase contrast; tomography; Fysik; Physics;

   Abstract : Small-animal x-ray imaging is an important tool for medical research. The penetration power of x-rays makes it possible to investigate the 3D structure of small animals and other thick biological samples by computed tomography (CT). READ MORE

7. 5. Characterization and Optimization of Silicon-strip Detectors for Mammography and Computed Tomography

   Author : Han Chen; Mats Danielsson; cheng xu; Andrew Maidment; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mammography; anti-scatter grid; photon-counting; spectral computed tomography; silicon strip; ASIC; energy resolution; Compton scatter; material decomposition; K-edge imaging; Medical Technology; Medicinsk teknologi;

   Abstract : The goal in medical x-ray imaging is to obtain the image quality requiredfor a given detection task, while ensuring that the patient dose is kept as lowas reasonably achievable. The two most common strategies for dose reductionare: optimizing incident x-ray beams and utilizing energy informationof transmitted beams with new detector techniques (spectral imaging). READ MORE