Sökning: "Regional cerebral blood flow"

Visar resultat 36 - 40 av 60 avhandlingar innehållade orden Regional cerebral blood flow.

  1. 36. Advances in brain SPECT : methodological and human investigations

    Författare :Marco Pagani; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :SPECT; 99Tcm-HMPAO; Computerised Brain Atlas; rC13F; Control Subjects; Alzheimer s Disease; Frontal Lobe Dementia;

    Sammanfattning : The aim of this work was to optimise and validate a new approach for examination of die regional cerebral blood flow (rCBF) using Single Photon Emission Computed Tomography (SPECT) for application in clinical research and patient care. It also involved the implementation of a software system for evaluation and analysis of rCBF. LÄS MER

  3. 37. MRI and SPECT neuroimaging in mild cognitive impairment and Alzheimer's disease

    Författare :Per Julin; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : This thesis concerns measurements of regional brain volumes using Magnetic Resonance Imaging (MRI) and of regional cerebral blood flow (CBF) using Single Photon Emission Computed Tomography (SPECT) in patients investigated for suspected dementia. In the first study (I), visually rated MRI-, SPECT and EEG-pathology were compared between patients with Alzheimer's disease (AD) and patients with Frontal Lobe Dementia (FLD). LÄS MER

  4. 38. Ventricular fibrillation and defibrillation in patients with implantable cardioverter defibrillators

    Författare :Mikael Runsiö; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :ventricular fibrillation; defibrilla~ion; implantable cardioverter defibrillator; haemodynamic; metabolism; hyperaemia; ischaemia; myocardial injury; histamine; neuropeptide 1: noradrenaline; endothelin; histamine; positron emission tomography.;

    Sammanfattning : Since the introduction of the implantable cardioverter defibrillator for humans with malignant ventricular arrhythmias in 1980, over 50, 000 patients world wide have received this device. The implantation procedure is simple and resembles the implantation of an ordinary pacemaker. LÄS MER

  5. 39. Clinical differentiation between frontotemporal dementia and Alzheimer's disease : psychometric, behavioral, neuroimaging and neurophysiological information

    Författare :Maria Lindau; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Frontotemporal dementia (FTD) initially affects the anterior regions of the brain, and gradually spreads to other cerebral areas. Behavioral alterations are described as the hallmark of FTD, whereas cognition is mostly found to be relatively spared. LÄS MER

  7. 40. Drug and disease effects on the human brain studied by functional MRI

    Författare :Love Engström Nordin; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: With the advent of magnetic resonance imaging (MRI) technology, various functional MRI (fMRI) techniques have become available for non-invasive neuroscientific studies and clinical diagnostics, which have led to a better understanding of the human brain function in normal and diseased subjects. In order to interpret the fMRI results correctly and design optimal research studies it is important to understand both the potentials and limitations associated with each fMRI technique. LÄS MER