1_Introduction to Medical Imaging (1)

Introduction to Medical Imaging – Chapter 1
Radiation and the Atom – Chapter 2
17-Feb-20
EM Wave and Particle Characteristics
Particle characteristics – when interacting with matter,
high energy EM radiation act as energy quanta: photons
E [Joule] = hn = hc/l, where h = Planck’s constant
(6.62x10 -34 Joule-sec = 4.13x10 -18 keV-sec)
If E expressed in keV and l in nm: E [keV] = 1.24/l [nm]
c.f. Bushberg, et al. The Essential Physics
of Medical Imaging, 2 nd ed., p.18.
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Transparency of Human Body to EM Radiation
c.f. Bushberg, et al. The Essential Physics
of Medical Imaging, 2 nd ed., p.18. c.f. Macovski, A. Medical Imaging Systems, p. 3.
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BME HCMUT 16