Help
Options
Question
If you increase mAs then density will.....
click to flip
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't know
Question
if you decrease mAs then density will....
Remaining cards (57)
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
Density and Contrast
| Question | Answer |
|---|---|
| If you increase mAs then density will..... | increase |
| if you decrease mAs then density will.... | decrease |
| How are mAs and densityt related? inversely/directly | directly |
| What is the influencing factor of density? | kVp |
| What is the controlling factor of density? | mAs |
| If you increase your SID then denisty will decrese/increase? | decrease |
| If you increase OID then denisty will decrease/increase? | decrease |
| What does filtration alter? | intensity |
| if you decrease filtration then density will increase/decrease? | increase |
| Filtration and density have a ____ relationship. | inverse |
| Beam restriction will ______ scatter photons. | reduce |
| if you increase beam restriction the density will ______. | decrease |
| Increased part thickness will result in a _______ of density. | decrease |
| Additive pathology will increase/decrease density. | decrease |
| destructive pathology will increase/decrease density | increase |
| Grids and density have a _______ relationship. | inverse |
| A high grid ratio will do what to the density? | decrease |
| Film/screen speed has a _______ relationship with density. | direct |
| Film/screen speed and mAs have a _____ relationship to denisty. | direct |
| Definition of density _______________. | the degree of blackening on the film |
| Density is controlled by ____. | mAs |
| ____ controls the current through the xray tube. | mAs |
| What is governed by the 15% rule ? | kVp |
| optimal density is __-__? | 0.25-2.25 |
| grids absorb scatter radiation which affect ______. | density |
| change ___ by 30% in order to see a visible change in denisty. | mAs |
| when mAs is increased, SID decrease, kVp is increased, FSS is increased, grid ratio is decreased, beam restriction is dcreased......... density will _______. | increase |
| The difference between adjacnt densities is ________. | Contrast |
| The controlling factor of contrast is ___. | kVp |
| If you increase kVp then contrast will increase/decrease. | decrease |
| Few shades of gray, low kVp, short scale, narrow latitude will have a (high/low) contrast? | high |
| Many shades of gray, high kVp, long scale, wide latitude will have a (high/low) contrast. | low |
| If you increase mAs contrast will ____________. | Do nothing (no effect) |
| Does the anode heel effect affect contrast? | No |
| If you increase SID contrast will _______. | increase |
| Distance and Contrast are (directly/inversely) related? | directly |
| If you increase filtration contrast will _______. | decrease |
| If you increase beam restriction contrast will ______. | increase |
| Additive pathology will (increase/decrease) contrast. | decrease |
| Destructive pathology will (increase/decrease) contrast. | increase |
| A higher grid ratio will (increase/decrease) contrast. | increase |
| Will Film screen speed effect contrast? | no |
| Does film processing effect contrast? | Yes. |
| Increase temp time or rate of film processing the contrast will (increase/decrease) | decrease |
| Decreasing temp, time or rate during film processing will (increase/decrease) contrast. | increase |
| the difference between adjacent tissues or shades of gray | contrast |
| contrast is controlled by ___. | kVp |
| three forms of contrast are _____,______,______. | film, subject, developer |
| What would you use to to calculate the change in beam intensity? | inverse sqaure law |
| primary function of contrast is to ____ _____ _____. | make detail visible |
| what is produced by the photoelectric effect? | contrast |
| Short scale contrast is produced by _ _____ ___. | a lower kVp |
| High contrast has a (long/short) scale contrast. | short (few shades of gray) |
| Long scale contrast will have (low/high) contrast. | low |
| low contrast is produced at (high/low) kvp. | high |
| many shades of gray will have a (low/high) contrast. | low |
| Because grids reduce the amount of scatter contrast is (increased/decreased) | increased |
| Films with a (wide/narrow) latitude will have short scale contrast which means there are few shades of gray. | narrow |
Created by:
jwheeler29
Popular Radiology sets