Sökning: "vascularity"

Visar resultat 1 - 5 av 29 avhandlingar innehållade ordet vascularity.

  1. 1. Angiogenesis in human renal cell carcinoma : hypoxia, vascularity and prognosis

    Författare :Johanna Sandlund; Torgny Rasmuson; Börje Ljungberg; Kjell Grankvist; Anders Bergh; Elisabeth Kjellén; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Endoglin CD105; CD31; prognosis; CA IX; HIF-2α; renal cell carcinoma; tissue microarray; immunohistochemistry; real-time PCR; stage; grade; Oncology; Onkologi;

    Sammanfattning : Background: Angiogenesis is recognised as a critical step in tumour progression. The angiogenic switch is activated by various trigger signals, such as hypoxia, low pH, and genetic mutations. Renal cell carcinoma (RCC) is often an aggressive tumour, and advanced disease has limited treatment options and bad prognosis. LÄS MER

  2. 2. Nuclear magnetic resonance and microcirculation: The influence of pulsatile brain-tissue motion on measurements of intravoxel incoherent motion and assessment of haemodynamics using exo- and endogenous tracers

    Författare :Ronnie Wirestam; Lund Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; diagnostic radiology; cortical activation; diffusion; tumor; tumour; ischemic stroke; ischaemic stroke; tracer kinetics; bolus tracking; phase mapping; brain motion; intracranial dynamics; blood flow; haemodynamics; vascularity; MRS; perfusion; MRI; magnetic resonance; Clinical physics; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Sammanfattning : In this project, the potential of magnetic resonance (MR) imaging and spectroscopy in studies of microcirculation and haemodynamics was evaluated. The spatial and temporal characteristics of human pulsatile brain-tissue movements in healthy individuals, relevant for the understanding of the cerebrospinal-fluid (CSF) circulation and the pathogenesis of hydrocephalus, were thoroughly investigated. LÄS MER

  3. 3. Influence of Islet-derived Factors in Islet Microcirculation and Endocrine Function

    Författare :Carl Johan Drott; Per-Ola Carlsson; Leif Jansson; Albert Salehi; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; diabetes mellitus; pancreas; blood flow; islet vascularity; islet-derived; TSP-1; ghrelin; CART; irisin; Medical Cell Biology; Medicinsk cellbiologi;

    Sammanfattning : Diabetes mellitus is a disorder with complex pathology and is frequently associated with vascular complications. In the islet micro milieu locally generated factors may affect both the physiology and the morphology of the tissue. LÄS MER

  4. 4. Ultrasound in the management of women with post-menopausal bleeding

    Författare :Elisabeth Epstein; gynekologisk och prenatal ultraljudsdiagnostik Obstetrisk; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; gynaecology; Obstetrics; observer variation; reproducibility; vascularity index; power Doppler; hydrosonography; biopsy; ultrasound; post-menopausal bleeding; malignancy; Endometrium; andrology; reproduction; sexuality; Obstetrik; gynekologi; andrologi; reproduktion; sexualitet;

    Sammanfattning : The aim of this thesis was to investigate how ultrasound can be used in the diagnostic work-up of women with post-menopausal bleeding (PMB) to optimise and individualise their management. The thesis is based on six studies comprising post-menopausal women with (Study I-VI) and without (Study VI) abnormal bleeding. LÄS MER

  5. 5. The Impact of Pancreatic Islet Vascular Heterogeneity on Beta Cell Function and Disease

    Författare :Sara Ullsten; Per-Ola Carlsson; Joey Lau; Sara Bohman; Rebecca L. Hull; Uppsala universitet; []
    Nyckelord :Pancreatic islets; heterogeneity; islet vascularity; blood flow; islet transplantation; islet amyloid; insulitis; type 1 diabetes; beta cell proliferation; Medicinsk vetenskap; Medical Science;

    Sammanfattning : Diabetes Mellitus is a group of complex and heterogeneous metabolic disorders characterized by hyperglycemia. Even though the condition has been extensively studied, its causes and complex pathologies are still not fully understood. The occurring damage to the pancreatic islets is strikingly heterogeneous. LÄS MER