منابع مشابه
Fundamentals of Medical Physiology
as “adverse selection.” One way to prevent adverse selection is to promote the formation of groups, or alliances, for purchasing insurance that will spread the associated risk and make premiums more affordable. Adverse selection has garnered extensive political attention. It served as the driver behind the Clinton proposal to create “regional health alliances,” and it prompted the individual ma...
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Optical imaging techniques offer simplistic while highly sensitive modalities for molecular imaging research. In this chapter, the major instrumental necessities for microscopic and whole-animal imaging techniques are introduced. Subsequently, the resulting imaging modalities using visible or near-infrared light are presented and discussed. The aim is to show the current capabilities and applic...
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OVER THE LAST SEVERAL DECADES, an increase in longevity and life expectancy has raised the average age of the world’s population. Among the countries currently classified by the United Nations as more developed (with a total population of 1.2 billion in 2005), the overall median age rose from 29.0 in 1950 to 37.3 in 2000 and is forecast to rise to 45.5 by 2050 (Ref 1). This worldwide increase i...
متن کاملX-ray imaging: Fundamentals and planar imaging
X-ray imaging is the most widespread and well-known medical imaging technique. It dates back to the discovery by Wilhelm Conrad Röntgen in 1895 of a new kind of penetrating radiation coming from an evacuated glass bulb with positive and negative electrodes. Today, this radiation is known as short wavelength electromagnetic waves being called X-rays in the English speaking countries, but “Roengt...
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Magnetic particle imaging (MPI) is a new medical imaging technique which performs a direct measurement of magnetic nanoparticles, also known as superparamagnetic iron oxide. MPI can acquire quantitative images of the local distribution of the magnetic material with high spatial and temporal resolution. Its sensitivity is well above that of other methods used for the detection and quantification...
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ژورنال
عنوان ژورنال: Journal of Nuclear Medicine
سال: 2010
ISSN: 0161-5505,2159-662X
DOI: 10.2967/jnumed.110.081026