Search for dissertations about: "bertil axelsson"

Showing result 1 - 5 of 10 swedish dissertations containing the words bertil axelsson.

2. 1. The incurable cancer patient at the end of life : Medical care utilization, quality of life and the additive analgesic effect of paracetamol in concurrent morphine therapy

   Author : Bertil Axelsson; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Palliative; cancer; place of death; health care utilization; quality of life; morphine; paracetamol; pain; Kirurgi; Surgery; Kirurgi; Surgery; kirurgi;

   Abstract : Only 12% of the patients died at home. When the period between diagnosis and death was less than one month, every patient died in an institution. Younger patients, marriedpatients, and those living within the 40 km radius of the hospital utilized more hospital days. READ MORE

4. 2. Quantitative SPECT : studies of some factors influencing quantitation accuracy in single photon emission computed tomography

   Author : Bertil Axelsson; Stockholms universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Abstract : .... READ MORE

5. 3. Evaluation of attenuation and scatter corrections in lung and brain SPECT

   Author : Agnetha Gustafsson; Bertil Axelsson; Göteborgs universitet Avdelningen för radiofysik Department of Radiations Physics; []
   Keywords : SPECT; attenuation; scatter; detectability; Monte Carlo simulation; MEDICINE; MEDICIN;

   Abstract : Single Photon Emission Computed Tomography (SPECT) is used to image functional processes in the human body. The image process is affected by physical effects such as attenuation, scatter, spatial resolution and statistical noise. READ MORE

6. 4. Corrections for improved quantitative accuracy in SPECT and planar scintigraphic imaging

   Author : Anne Larsson; Lennart Johansson; Katrine Åhlström Riklund; Bertil Axelsson; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Quantitative SPECT; scintigraphic imaging; attenuation correction; scatter correction; collimator-detector response; septal penetration; background correction; Monte Carlo simulation; Radiological physics; Radiofysik;

   Abstract : A quantitative evaluation of single photon emission computed tomography (SPECT) and planar scintigraphic imaging may be valuable for both diagnostic and therapeutic purposes. For an accurate quantification it is usually necessary to correct for attenuation and scatter and in some cases also for septal penetration. READ MORE

7. 5. Calibration of Ionization Chambers for Measuring Air Kerma Integrated over Beam Area in Diagnostic Radiology

   Author : Peter Larsson; Gudrun Alm Carlsson; Jan Persliden; Bertil Axelsson; Linköpings universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; KAP-meter; DAP-meter; PKA; kerma area product; energy dependence; calibration; Radiological physics; Radiofysik;

   Abstract : The air kerma area product PKA is an important quantity used by hospital physicists in quality assurance and optimization processes in diagnostic radiology and is recommended by national authorities for setting of diagnostic reference levels. PKA can be measured using a transmission ionization chamber (kerma area product (KAP) meter) mounted on the collimator housing. READ MORE