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Spectral imaging is an umbrella term for energy-resolved X-ray imaging in medicine. [1] The technique makes use of the energy dependence of X-ray attenuation to either increase the contrast-to-noise ratio, or to provide quantitative image data and reduce image artefacts by so-called material decomposition.
Natural color X-ray photogram of a wine scene. Note the edges of hollow cylinders as compared to the solid candle. William Coolidge explains medical imaging and X-rays.. An X-ray (also known in many languages as Röntgen radiation) is a form of high-energy electromagnetic radiation with a wavelength shorter than those of ultraviolet rays and longer than those of gamma rays.
X-ray devices, the spectrum camera, the electron microscope, and the gas chromatograph were developed and commercialized in advance of other Japanese companies. Shimadzu became a corporation in 1917. [8] The American arm of the company, Shimadzu Scientific Instruments, was founded in 1975. [7]
There exist several efficient designs for analyzing an X-ray emission spectrum in the ultra soft X-ray region. The figure of merit for such instruments is the spectral throughput, i.e. the product of detected intensity and spectral resolving power. Usually, it is possible to change these parameters within a certain range while keeping their ...
In 2000 Impulse Dynamics participated in a three-party transaction with Guidant and US-based healthcare company Johnson & Johnson [15] and, in 2005, it was announced that Johnson & Johnson invested $80 million in Impulse Dynamics. [3] Ben-Haim also co-founded Spectrum Dynamics LLC., a company specializing in cardiac molecular imaging. [6]
Nowadays, in all forms of digital X-ray imaging (radiography, fluoroscopy, and CT) the conversion of X-ray energy into visible light can be achieved by the same types of electronic sensors, such as flat panel detectors, which convert the X-ray energy into electrical signals: small bursts of electric current that convey information that a ...
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Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object.Applications of radiography include medical ("diagnostic" radiography and "therapeutic radiography") and industrial radiography.
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