CHAPTER 1 WITH QUESTIONS AND ANSWERS
"electronic emission" or "Thermionic Emission " is controlled by - -mA controls
-Anode - -AKA the "target" it is the positively charged electrode.
-As KVP decreases penetration - -Penetration decreases
-Cathode - -Filament
-CR, DR, CCD, and PSP - -Compiled radiography
Direct radiography
Charged coupled device
Phosphor storage plate
-digital images - -Tube>Patient>Digital Detector>Computer Station>Radiologist
-Focal point - -Gives radiographs sharp edges and good definition.
-High KvP produces - -Short wavelength and high frequency
-How does filtration improve patient exposure? - -Improves the quality of the beam
-HVL - -Half value layer (quality of the X-ray beam)
-improves the quality of the beam - -Filtration
-ion - -Process in which results in the removal of an electron (negative charge) from an atom, leaving the
atom with a net positive charge.
-mA is directionally proportional to the quantity of X-rays generated and the amount of exposure the
patient receives - -MA is directionally proportional to the quantity of X-rays generated and the amount
of exposure the patient receives
-Ma is the primary controller of - -Density- mA control the degree of blackening of the film
-number of crests in a wavelength - -Frequency
-properties of x-rays. - -1.form of electromagnetic radiation
2.have higher energy photons & shorter wavelength than visible light
3. Penetrate most forms of matter
4. Travel at the speed of light
5. Affect photographic film as much as light rays do
6. Make certain chemicals emit light
7. Can ionize matter