Sökning: "single-photon emission computed tomography"

Visar resultat 16 - 20 av 64 avhandlingar innehållade orden single-photon emission computed tomography.

1. 16. Studies of Nuclear Fuel by Means of Nuclear Spectroscopic Methods

   Författare :Peter Jansson; Roland Carchon; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation sciences; irradiated nuclear fuel; nuclear spectroscopy; tomography; safeguard; Strålningsvetenskap; Radiation biology; Strålningsbiologi; Kärnfysik; Nuclear Physics;

   Sammanfattning : The increasing demand for characterization of nuclear fuel, both from an operator and authority point of view, motivates the development of new experimental and, preferable, non-destructive methods. In this thesis, some methods based on nuclear spectroscopic techniques are presented. LÄS MER

3. 17. Myocardial Perfusion and Function: Comparative assessment by ECG, SPECT and MRI

   Författare :Eva Persson; Lund Klinisk fysiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; tomografi; medicinsk instrumentering; Physiology; radiologi; radiology; tomography; medical instrumentation; Klinisk fysiologi; Clinical physics; ST-segment deviation ; myocardial ischemia ; myocardial perfusion ; MRI; CMR; MPS; ECG; SPECT; Fysiologi; Cardiovascular system; myocardial function ; Kardiovaskulära systemet;

   Sammanfattning : Evaluation of myocardial perfusion and function is important in management of patients with suspected or known coronary artery disease. This thesis focuses on the use of common diagnostic methods, myocardial perfusion single-photon emission computed tomography (MPS) and electrocardiography (ECG), to enhance and validate the diagnostic information. LÄS MER

4. 18. Tomographic ventilation-perfusion lung scintigraphy in cardiopulmonary disease

   Författare :Jonas Jögi; Lund Klinisk fysiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Technegas; Ventilation-Perfusion Single Photon Emission Computed Tomography; Chronic obstructive pulmonary disease; Heart failure; Pulmonary embolism;

   Sammanfattning : Respiration relies, among other things, on the balance between regional ventilation and perfusion in the lungs. There are many cardiopulmonary diseases, such as pulmonary embolism (PE), chronic obstructive pulmonary disease (COPD) and left heart failure (LHF), which can affect respiration negatively. LÄS MER

5. 19. Development of radioligands for emission tomography imaging of dopamine D1 and benzodiazepine receptors

   Författare :Christian Foged; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Dopamine D1 receptors; Benzodiazepine BZ receptors; PET; SPECT.Stoc;

   Sammanfattning : Brain imaging of dopamine and benzodiazepine (BZ) receptors in vivo is of central interest in neuropsychiatric disorders such as schizoprenia, Huntington's disease and epilepsy. The objective was to develop new radioligands for emission tomography of dopamine D1 and BZ receptors. LÄS MER

7. 20. The Effect of CO2-Pneumoperitoneum on Ventilation Perfusion Distribution of the Lung

   Författare :Christof Strang; Göran Hedenstierna; Suzanne Odeberg-Wernerman; Uppsala universitet; []
   Nyckelord :lung; atelectasis; computed tomography; multiple inert gas elimination technique; model; pig; Pa–ECO2 ratio; surgery; laparoscopy; lung; blood flow; single photon emission computed tomography; ventilation perfusion distribution; gas exchange; hypoxic pulmonary vasoconstriction; MEDICINE; MEDICIN;

   Sammanfattning : Laparoscopic operations are a common and popular way for abdominal procedures. They are usually performed by insufflation of carbon dioxide (CO2) into the abdominal cavity. However, insufflation of CO2 may interfere with cardiac and circulatory as well as respiratory functions. The CO2-pneumoperitoneum (PP) may cause hypercarbia and acidosis. LÄS MER