نتایج جستجو برای: contrast agent
تعداد نتایج: 629223 فیلتر نتایج به سال:
OBJECTIVES Prophylactic acetylcysteine along with hydration seems to be better than hydration alone in preventing the reduction in renal function induced by a contrast dye. BACKGROUND Contrast media can lead to acute renal failure that may occasionally require hemodialysis. METHODS One hundred eighty-three consecutive patients with impairment of renal function, undergoing coronary and/or pe...
Current options for modelling contrast agent nonlinearities do not predict acoustic propagation. Other popular formulae are restricted to the linear steady state (e.g. for crosssections, sound speed and attenuation). Hence all options for modelling contrast agents have limited applicability to most of the insonification conditions to which they are exposed in vivo. This paper provides a theoret...
Gadolinium chloride (GdCl3) was studied as a contrast agent for nuclear magnetic resonance. This rare-earth element dramatically alters proton resonance (paramagnetic moment = 10.8 Bohr magnetons). Acute toxicity was determined by intravenous injections in mice; mean lethal dose was 100-200 mg of GdCl3 . 6 H2O/kg. Changes in T1 of plasma, kidney, liver, and brain of mice and rats were measured ...
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