Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Equipment Test 2
| Question | Answer |
|---|---|
| An increase in kVp would ______ the ______ of the emission spectrum. | Increase, amplitude and position |
| The penetrability of an x-ray bean is called x-ray _____ | quality |
| The _______ is/are outside the glass envelope | stators |
| The discrete portion of the x-ray spectrum would change position with a change in _______ | target material |
| A 15% increase in kVp is equivalent to | doubling the mAs |
| Primary windings is equal to 100 and the secondary windings is equal to 65,000 what would the output voltage be if the primary voltage is 50? | 32,500 |
| A diode allows electrons to flow from | cathode to anode |
| The operating console contains circuits that are | low voltage |
| Because of the line focus principle, the effective focal spot size decreases with decreasing______ | target angle |
| Thermionic emission at the filament creates a ______ | space charge |
| The target of the rotating anode is usually coated with a ______ alloy. | Tungsten |
| The most widely used support structure for the x -ray tube is the ______ | ceiling support system |
| Full wave rectified, three phase units provide an x-ray beam at _____ pulse(es) per second | 120 |
| An exposure taken at 100 kVp would have a continuous emission spectrum with a maximum energy of ______ kVp | 100 |
| The main purpose of added filtration is to reduce | patient dose |
| The most accurate type of timer is the _______ timer | electronic |
| The three main parts of the x-ray system are the x-ray tube, _______, and ______. | operating console, high voltage generator |
| High capacity tube rotors revolve at _____ rpm. | 10,000 |
| Charges in _______ result in directly proportional changes in the amplitude of the emission spectrum | mAs |
| In modern imaging systems, the components for rectification are___________ | Solid State Semiconductor |
| An increase in mAs would _______ the _____ of the emission spectrum | Increase, amplitude alone |
| When electrons bombard the target ________ % of their kinetic energy is converted to heat | 99 |
| The cathode side of the tube should be directed toward the ________ part of the patient | thicker |
| The _______ circuit provides electrons for the x-ray tube current | filament |
| The number of x-rays in the useful beam defines x-ray | quantity |
| Electron interactions at the inner shell of the target atoms produce ________ radiation | characteristic |
| If the distance from the source to the image (SID) is reduced by half, how is the x-ray intensity at the image affected | 4 |
| The amplitude of the emission spectrum with a ________ generator is _______ it is with a three phase generator | single phase, lower than |
| X-ray beam quality is improved by _______. | increasing filtration |
| The negative side of the x-ray tube holds the ______ | filament |
| At the target, the projectile electrons interact with | both A and B. outer shell and inner shell electrons |
| What would the output voltage be if the primary voltage is 220. The primary has 250 windings and the secondary has 275 windings. | 242 |
| A step down transformer is located in the _______ circuit. | filament |
| The half value layer (HVL) of an x-ray beam is a measurement of beam | quality |
| If an exposure is 0.5 mGy at an SID of 40 inches, what would the exposure be at an SID of 60 inches | 0.22 |
| An x-ray exposure of 220 mR is recorded at a distance of 40 inches. if the same technical factors are used, what will the exposure be if the distance increase to 72 inches? | 61.73 |
| A low quality beam would also have low ________ | penetrability |
| Added filtration will _______ beam quality and ______ beam quantity | increase, decrease |
| X-ray quantity increases in direct proportion to increase in _______ | mAs |
| What is the formula for heat units for HF x-ray machine | 1.41 x kVp x mA x seconds |
| Most of the x-rays produced at the target are ________ | Brehms |
| At 55 kVp, ____ of the x-rays produced are brems | 100% |
| Voltage across the x-ray tube is most constant with | high frequency |
| Approximately _____ of the kinetic energy of the projectile electrons is converted to the x-rays at the target | 1% |
| An x-ray beam that could pass through dense tissue would have high ____ | Both A and B Quality and penetrability |
| A single phase waveform has ________ ripple | 100 |
| The first component to receive power in the x-ray circuit is the ________ | autotransformer |
| Beam quality is affected by _______ | kVp and filtration |
| An increase of 15% in kVp is equivalent to increasing mAs ________ | 100% |
| Projectile electrons travel from _________ | cathode to anode |
| The difference in the wave form between the primary and secondary sides of the high voltage transformer is __________ | amplitude |
| During an exposure, most of the ________ energy of the projectile electrons is converted to _________ | kinetic , heat |
| Primary windings is equal to 5,000 and the secondary windings equals 100 what would the output amperage be if the input amperage is 2? | ??? |
| The ______ is the source of radiation in the x-ray tube | focal spot |
| How does added filtration affect the emission spectrum | reduced amplitude, shift to the right |
| The quantity of bremsstrahlung radiation increases proportional with increased ________ | mAs |
| The filament is made of | tungsten |
| Bremsstrahlung x-rays are produced by ________ at the target | slowing electrons |
| Variations in power distribution to the x-ray machine are controlled by the _______ | line voltage compensator |
| The rotating anode is turned by a _______ | magnetic field |
| With half wave rectification, the current flows through the x-ray tube during the ______ part of the cycle | positive |
| If the intensity of a 70 kVp exposure at 20 mAs is 1.o mGy what would it be at 5 mAs? | 0.25 mGy |
| The effective focal spot size is _____ the actual focal spot size | smaller than |
| The x-ray intensity is lower on the anode side of the tube because of the _________ | heel effect. |
Created by:
tnovak23