Sökning: "contrast agents"

Visar resultat 16 - 20 av 248 avhandlingar innehållade orden contrast agents.

  1. 16. Cell response to imaging contrast agents suggested for atherosclerotic plaque imaging

    Författare :Amit Laskar; Ximing Yuan; Wei Li; Rolf GG Andersson; Eva Hurt-Camejo; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Oxysterols are the major cytotoxic components of oxidized low-density lipoprotein (OxLDL) that accumulate in atherosclerotic plaques. Their uptake by macrophages ensue foam cell formation, atherogenesis and plaque progression. LÄS MER

  3. 17. Are gadolinium contrast media really less nephrotoxic than iodine agents in radiographic examinations? A comparison in relation to their ability to attenuate x-rays in a pig model

    Författare :Barbara Elmståhl; Malmö Diagnostisk radiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Angiography; Computed tomography; toxicity; Contrast media; Glomerular filtration; Gadolinium; Iodine; Kidney failure; Nephrotoxicity.; Medicin människa och djur ; radiology; Clinical physics; Medicine human and vertebrates ; tomography; medical instrumentation; Diagnostik; Diagnostics; medicinsk instrumentering; tomografi; radiologi; Klinisk fysiologi;

    Sammanfattning : Purpose: To confront the statement that gadolinium contrast media (Gd-CM) are less nephrotoxic than iodine contrast media (I-CM) when used in x-ray angiographic and computed tomographic (CT) examinations. Methods: I) For CT measurements (mean density in Hounsfield numbers) 20-mL syringes filled with I- and Gd-CM at 0.01, 0.02, 0. LÄS MER

  4. 18. Gadodiamide injection for Enhancement of MRI in the CNS. Applications, dose, field and time dependence

    Författare :Per Åkeson; Malmö Diagnostisk radiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; Phantom study.; Comparative study; Human; Time dependence; Dosage; Enhancement; Gadolinium; MRI contrast media; Contrast media; Magnetic resonance imaging; Spine; Brain neoplasms; secondary; Brain; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Sammanfattning : Aims of the study The aims of this study using Gadodiamide injection were to investigate: · Whether Gadodiamide injection was comparable to Gd-DTPA for the enhancement of CNS lesions. · The contrast effect at different field strengths. · The effective time-window for the enhancement of blood-brain barrier damage. LÄS MER

  5. 19. On Nonlinear Acoustics in Contrast Echocardiography

    Författare :Marcus Ressner; Birgitta Janerot-Sjöberg; Per Ask; Tomas Jansson; Hans Torp; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Ultrasound is one of the most commonly used noninvasive medical imaging techniques. Ultrasound contrast agents (UCA), consisting of encapsulated gas-filled microbubbles, have shown to increase the diagnostic precision in selected low echogenic patients. LÄS MER

  7. 20. One-click away from higher contrast : Improvements to peripheral clearance for same-day immunoPET in Alzheimer’s disease

    Författare :Eva Schlein; Dag Sehlin; Jordi Llop Roig; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Alzheimer’s disease AD ; bispecific antibody; Amyloid-β Aβ ; Receptor mediated transcytosis RMT ; Neonatal Fc receptor FcRn ; Blood-brain barrier BBB ; Inverse electron demand Diels−Alder reaction IEDDA; pre-targeting; tetrazine; bio-orthogonal; Fluorine-18; clearing agent;

    Sammanfattning : The brain is a challenging target for antibody-based positron emission tomography (immunoPET) to image amyloid-beta (Aβ). Antibodies detect pathology with high sensitivity, but due to their size and biological half-life, they cause a high background radiation, if radiolabelled. LÄS MER