Test 4

The anode's function is to accelerate electrons and then stop them

What produces the electrons and what stops them?

What are 2 types of x-rays?

Which of the following happens during characteristic x-ray production

Which of the following happens during Bremsstrahlung x-ray production

x-ray production efficiency: @100 kVp, less than [blank_start]1[blank_end]% of energy turns into x-rays @60 kVp, less than [blank_start]0.5[blank_end]% of energy turns into x-rays

mAs affects the [blank_start]quantity[blank_end] and kVp affects the [blank_start]quality[blank_end] of x-rays in the spectrum

Increase filtration, [blank_start]increase[blank_end] energy, [blank_start]decrease[blank_end] quantity

Filtration affects quality and quantity of x-rays in the spectrum

Gray (Gy): ([blank_start]rad[blank_end]) [blank_start]absorbed dose[blank_end] Sievert (Sv): ([blank_start]rem[blank_end]) [blank_start]equivalent dose[blank_end]

Double the mA you [blank_start]double[blank_end] the dose of radiation

If kVp increases 15% then mAs [blank_start]decreases[blank_end] by 50% If kVp is decreased by 15% then mAs [blank_start]doubles[blank_end]

Doubling the SID [blank_start]reduces[blank_end] the intensity by 1/4

Adding filtration improves [blank_start]quality[blank_end] and decreases [blank_start]quantity[blank_end]

Adding more filtration increases contrast

Classical scatter: [blank_start]unmodified[blank_end] or [blank_start]coherent[blank_end] Compton scatter: [blank_start]modified[blank_end] or [blank_start]incoherent[blank_end]

What type of scatter happens at low energy?

Photoelectric effect is characteristic radiation

What type of scatter occurs when an electron receives too much energy and is kicked out from its orbiting shell

Compton occurs in the inner shells

During Compton scatter, the greater the angle the incident photon is scattered, the [blank_start]lower[blank_end] its energy

Phototrasmutation or photodisintegration, a photon will interact with an atom and outputs neutron, proton or alpha particle which will change the properties of the atom

Pair production demonstrates the law of conservation of energy

Effects of ionizing radiation [blank_start]Chemical[blank_end]: free radials; turns diamonds green in reactors [blank_start]Luminescence[blank_end]: causes certain materials to give off light [blank_start]Photographic[blank_end]: exposes film [blank_start]Physiologic[blank_end]: burn skin, cause genetic changes [blank_start]Thermoluminescence[blank_end]: converts to light in certain chemicals when heated

What part of the image intensifier should not reflect, refract or bend light?

Csl does what?

ZnCdS does what?

Label the image intensifier flow chart

The photocathode is positively charged

During each phase from photon entry to light output, the signal grows [blank_start]larger[blank_end]

What is the technique for mA when used for fluoroscopy?

What is the technique for kVp when used for fluoroscopy?

The smaller the input the [blank_start]bigger[blank_end] the image in the end

Which magnification field will show the biggest image?

Having the focal point further back will do what to the image?

What happens during magnification?

[blank_start]Brightness gain[blank_end]: system's ability to illuminate the image [blank_start]Gain[blank_end]: the ability of an amplifier to increase the power of input signals

Images are displayed in interlaced mode