Chapter7 Word Scramble
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| Question | Answer |
| what is the unit to indicate the total quantity of x-rays in an exposure? | mAs milliamperes-seconds |
| Which of the following will result in increased radiographic density? 1. increased mA 2. Increased exposure time 3. Decreased source-image receptor distance Choose A. 1 & 2 B. 1 &3 C. 2 & 3 D. 1,2,3, | A 1 & 2 |
| The mass density of the body part is referred to as _____________? | tissue density |
| The primary controller of radiographic density is __________. | mAs |
| The difference in radiographic density btwn any 2 adjacent portions of the image is called ____________ | Contrast |
| The primary factor controlling radiographic constrast & penetration is ______________ A. mA B. exposure time C. mAs D. kVp | D. kVp |
| high contrast produced by low kVp results in an image with __________________________ | a short scale of contrast |
| Generalized unwanted exposure on the image is called _________________ | fog |
| A decrease in SID will result in _______________ | a increase of SID source image receptor distance |
| a mispresentation in the size and shape of the strucuture being examined is called __________ | Distortion |
| the fuzzy unsharpness at the edges of structures or body parts is called _______________ | fog |
| what is OID | object-image receptor distance |
| what is penumbra | unsharp edges |
| What is the inverse law? | intensity is inversely proportional to the square of the distance |
| what does SID stand for ? | source image receptor distance |
| what is "size distortion"? | magnification of a part |
| what is elongation ? | object appears longer |
| What is "shape distortion"? | result of unequal magnification |
| what is "foreshortening"? | object appears shorter |
| What is density? | overall blackness on the image |
| long scale contrast? | Produced by high kVp |
| what is contrast? | difference in density btwm adjacent structures |
| What is short scale contrast? | produced by low kVp |
| what is quantum mottle? | grainy or mottled image |
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