Search for dissertations about: "low-dose CT"

Showing result 1 - 5 of 17 swedish dissertations containing the words low-dose CT.

  1. 1. Adolescent Idiopathic Scoliosis. The Role of Low Dose Computed Tomography

    University dissertation from Department of Radiology, Lund University

    Author : Kasim Abul-Kasim; Lund University.; Lunds universitet.; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; low-dose spine CT; effective dose; screw misplacement; adolescent idiopathic scoliosis; outcome.; titanium screws; image quality; neurovascular complication; phantom;

    Abstract : Continuous implementation of new operative methods for correction and stabilization of spinal deformities in young patients with AIS demands a detailed morphological analysis of the vertebral column. CT spine according to protocols available in daily clinical practice means high radiation dose to these young individuals. READ MORE

  2. 2. CT Urography Efforts to Reduce the Radiation Dose

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Pär Dahlman; Uppsala universitet.; [2011]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Urinary tract malignancy; renal cell carcinoma; urography; x-ray computed tomography; radiation dosage; dose escalation; hematuria diagnosis; MEDICINE Physiology and pharmacology Radiological research Diagnostic radiology; MEDICIN Fysiologi och farmakologi Radiologisk forskning Diagnostisk radiologi; Radiology; Radiologi;

    Abstract : Computed tomography urography (CTU) is today the imaging method used to investigate patients with suspected urinary tract malignancy, replacing the old imaging method intravenous pyelography (IVP) about a decade ago. The downside of this shift was that the effective radiation dose to the examined patient was eight times higher for CTU compared to IVP. READ MORE

  3. 3. Neonatal Exposure to Low-Dose Ionizing Radiation in Mice Developmental Neurotoxic Effects of Single and Fractionated Doses and Interaction with Nicotine

    University dissertation from Uppsala

    Author : Sonja Buratovic; Uppsala universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis aims to investigate the developmental neurotoxic effects of low-dose exposure to ionizing radiation, alone or together with nicotine, during a defined critical period of neonatal brain development in mice. Investigation of neurotoxic effects following fractionated or acute low-dose radiation, resembling the clinical situation during repeated CT scans or radiation delivered to non-target tissue during radiotherapy, and possible interaction effects with other agents, is of great importance for risk and safety evaluation. READ MORE

  4. 4. Low-Dose Ionizing Radiation Induces Neurotoxicity in the Neonate Acute or fractionated doses and interaction with xenobiotics in mice

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Sonja Buratovic; Uppsala universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ionizing radiation; Neonatal; Neurotoxicity; Behaviour; Nicotine; Ketamine; Mouse; Cognition; Acute irradiation; Fractionated irradiation;

    Abstract : This thesis examines the developmental neurotoxic effects of exposure to low-dose ionizing radiation (IR), alone or together with xenobiotics, during a critical period of neonatal brain development in mice.During mammalian brain development there is a period called the brain growth spurt (BGS), which involves extensive growth and maturation of the brain. READ MORE

  5. 5. Low-dose computed tomography of the abdomen and lumbar spine

    University dissertation from Örebro : Örebro university

    Author : Muhammed Alshamari; Örebro universitet.; [2016]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Tomography; X-Ray Computed; Radiography; Radiation Dosage; Abdomen; Spine; Lumbosacral Region; Regression Analysis; Kirurgi; Surgery;

    Abstract : Radiography is a common radiologic investigation despite abundant evidence of its limited diagnostic value. On the other hand, computed tomography (CT) has a high diagnostic value and is widely considered to be among the most important advances in medicine. READ MORE