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This dissertation by Johan Zötterman explores the use of Laser Speckle Contrast Imaging (LSCI) in reconstructive surgery. It investigates the technology's application for non-invasive tissue perfusion monitoring, comparing it to other methods like Laser Doppler Flowmetry (LDF). Through various studies, the research evaluates LSCI's effectiveness in detecting venous outflow obstruction and predicting flap necrosis in surgical procedures. The work highlights LSCI's advantages, such as fast acquisition time and spatial resolution, while acknowledging limitations like sensitivity to motion artifacts and inability to provide absolute perfusion data. The dissertation is intended for medical professionals and researchers interested in advanced imaging techniques for surgical applications.

Diagnostic imaging. --- Laser Doppler perfusion imaging.

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Magnetic resonance imaging. --- Perfusion (Physiology) --- Body fluids --- Physiology --- Clinical magnetic resonance imaging --- Diagnostic magnetic resonance imaging --- Functional magnetic resonance imaging --- Imaging, Magnetic resonance --- Medical magnetic resonance imaging --- MR imaging --- MRI (Magnetic resonance imaging) --- NMR imaging --- Nuclear magnetic resonance --- Nuclear magnetic resonance imaging --- Cross-sectional imaging --- Diagnostic imaging --- Diagnostic use --- Magnetic Resonance Imaging --- Perfusion Imaging

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In recent years, there have been outstanding achievements in stroke diagnosis and care. Our better understanding of the pathophysiological mechanisms and the advances in neuro-imaging have enabled us to diagnose stroke syndromes with remarkable precision and uncover underlying vessel pathologies that can be directly correlated to the stroke event. Within a short period of time, mechanical thrombectomy became the standard of care for patients with large vessel occlusions and symptom onset up to 24 hours, while other recent trials also suggest the use of perfusion imaging to guide intravenous thrombolysis in the extended time window. In this Special Issue, we will also extensively discuss relevant topics on secondary stroke prevention, including the prompt use of nonvitamin k oral anticoagulants and the potential effect of reversal agents in patients with intracerebral hemorrhage related to their use. We will also delineate treatment options for stroke patients with indication for long-term anticoagulation and high bleeding risk. Finally, a particular mention will be made for young patients with stroke, the extent of the diagnostic work-up, and the selection of those who would benefit from patent foramen ovale closure.

Medicine --- atrial fibrillation --- cerebral infarction --- carotid stenosis --- ultrasonography --- outcomes --- cryptogenic stroke --- neurosonology --- Holter monitoring --- transcranial Doppler --- cervical duplex --- stroke --- hemorrhage --- thrombectomy --- cone-beam computed tomography --- cerebral angiography --- platelet reactivity --- ischemic stroke --- aspirin resistance --- infarction volume --- multiplate --- reperfusion --- therapy --- outcome --- intravenous thrombolysis --- NIHSS --- Barthel index --- functional dependence --- ultrasound --- acute ischemic stroke --- perfusion imaging --- contrast agent --- intracerebral hematoma --- subarachnoid hemorrhage --- large vessel disease --- clinical outcome --- prognosis --- functional magnetic resonance imaging --- neuronal plasticity --- recovery of function --- motor cortex --- ankle-brachial index difference --- inter-ankle blood pressure difference --- peripheral artery disease --- anemia --- blood transfusion --- red blood cells --- outcome assessment --- endothelial progenitor cells --- atherosclerosis --- computed tomography angiography