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CMI 360 EXAM 1 (1-4) 126 QUESTIONS WITH GUARANTEED PASSED ANSWERS!!
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CMI 360 EXAM 1 (1-4) 126 QUESTIONS WITH GUARANTEED PASSED ANSWERS!!
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CMI 360 EXAM 1 (1-4)126 QUESTIONS WITH
GUARANTEED PASSED
ANSWERS!!
CMI 360
Evatee 10/20/24 CMI 360
,CMI 360 EXAM 1 (1-4) 126 QUESTIONS WITH
GUARANTEED PASSED ANSWERS!!
radiation Answer - the emission of energy as waves and/or particles
can move through space, or a material medium
ionizing radiation Answer - radiation with enough kinetic energy to *liberate*
an electron from an atom or molecule
non-ionizing radiation Answer - insufficient energy to liberate electrons
example of gamma rays in diagnostic imaging? Answer - to image the
distribution of radiopharmaceuticals in nuclear imaging
example of x-rays in diagnostic imaging? Answer - radiography and CT imaging
example of visible light in diagnostic imaging? Answer - observation and
interpretation of images
example of radiofrequency in diagnostic imaging? Answer - ultrasound and
MRI
how are x-rays produced? Answer - from the interaction of a *high energy
electron* with a *metal target*
electrons knock out an electron from *inner shell* of a metal atom
, electrons from a *higher shell* fills the *vacancy* and emits an *x-ray photon*
(characteristic x-ray)
the *energy of the photon* is *equal to the difference in binding energy of the
two shells*
radiation Answer - energy that travels through space or matter
electromagnetic (EM) radiation Answer - has no mass, is unaffected by either
electrical or magnetic fields, and travels at a constant speed in a given medium
travels in straight lines
electromagnetic radiation propagates as a pair of? Answer - perpendicular
electric and magnetic fields
amplitude (a) Answer - wave intensity, maximal height
wavelength Answer - distance between any 2 identical points on adjacent
cycles
period Answer - time required to complete one cycle of a wave
frequency (v) Answer - # of periods/sec (1/ period)
phase Answer - temporal shift of one wave with respect to the other
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