Sökning: "Scatter correction"
Visar resultat 1 - 5 av 12 avhandlingar innehållade orden Scatter correction.
1. Corrections for improved quantitative accuracy in SPECT and planar scintigraphic imaging
Sammanfattning : 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. LÄS MER
2. Advances in quantitative emission tomography : development and analysis of methods for validation and correction
Sammanfattning : The nuclear medicine imaging techniques SPECT and PET are sensitive tools in mapping various physiological and biochemical processes in vivo. This work was devoted to investigations of methodological and physical properties of the SPECT technique as well as developing methods for validation and correction. LÄS MER
3. Evaluation of attenuation and scatter corrections in lung and brain SPECT
Sammanfattning : 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. LÄS MER
4. Development and evaluation of scatter correction techniques in SPECT
Sammanfattning : .... LÄS MER
5. Novel computational methods for image analysis and quantification using position sensitive radiation detectors
Sammanfattning : The major advantage of position sensitive radiation detector systems lies in their ability to non invasively map the regional distribution of the emitted radiation in real-time. Three of such detector systems were studied in this thesis, gamma-cameras, positron cameras and CMOS image sensors. LÄS MER