click below
click below
Normal Size Small Size show me how
Physics Final Study
| Question | Answer |
|---|---|
| X-ray beam energy is improved by ____________. | Increased filtration |
| Increasing kVp increases the _________ of an x-ray beam. | Energy |
| When SID is increased, ______ must be increased by _____ to maintain constant exposure to the image receptor. | mAs, SID^2 |
| The main purpose of added filtration is to reduce ____________. | Patient dose |
| A compensating filter is used to create ________ exposure with a body part of _________ thickness. | uniform, nonuniform |
| The HVL is lowered by a decrease in ________. | kVp |
| Added filtration will ______ beam energy and ______ HVL. | increase, increase |
| X-ray intensity is proportional to ____. | kVp^2 |
| X-ray quantity is _______ proportional to the ________ of the distance from the source. | inversely, square |
| X-ray intensity is directly proportional to _____. | mAs^2 |
| If the intensity of a 70 kVp exposure at 20 mAs is 1.0 mGya, what would it be at 5 mAs? | 0.25 mGya |
| If the quantity of electrons hitting the target is doubled, the x-ray intensity is __________. | increased by a factor of two |
| X-ray intensity is proportional to ______. | kVp2 |
| An increase of 15% in kVp is equivalent to increasing mAs _____. | 100% |
| X-ray intensity increases in direct proportion to increases in __________. | mAs |