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2-2 x rays - BENG101 Foundations of Biomedical Imaging Fall...

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BENG101 Foundations of Biomedical Imaging Fall 2009 X-rays
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Introduction X-rays discovered by William Rontgen in 1895 Tube emitting photons caused a fluorescent screen to glow, (even when tube placed inside a box!) Tube emitting new type of radiation, called X-rays (mysterious nature) Different media had different attenuation and it could be captured on film First X-ray picture of his wife’s hand (December 1895)
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What are X-Rays? X-ray photons have high energies and short wavelengths. ( E = hf) Wavelength:10 -10 m (Angstrom), Energy: KeV (eV: 1.6x10 -19 J) EM Spectrum
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