front 1 . Which of the following is accurate regarding the relationship between milliamperage (mA) and exposure time to maintain the exposure to the image receptor (IR)? A. Direct proportional B. Direct C. Inverse D. Inverse proportional | back 1 no data |
front 2 2. The exposure indicator value reflects excessive exposure to the IR. Which of the following is the best for correcting the exposure error? A. Decrease kVp by 50% B. Increase mAs by 15% C. Decrease mAs by 50% D. Decrease mAs by 15% | back 2 no data |
front 3 3. What exposure factor affects both the quality and the quantity of the x-ray beam? A. kVp B. SID C. mA D. Focal spot size | back 3 no data |
front 4 4. Which of the following is not affected by kilovoltage? A. Compton interactions B. Spatial resolution C. Subject contrast D. Radiation quantity | back 4 no data |
front 5 5. Increasing the mAs has ________ effect on brightness displayed in digital imaging. A. a direct B. a proportional C. an inverse D. no | back 5 no data |
front 6 6. Which of the following would maintain radiation exposure to the IR when the kilovoltage is decreased by 15%? A. Increase mAs by 15% B. Increase mAs by 50% C. Double the mAs D. Halve the mAs | back 6 no data |
front 7 7. A quality image is produced using 70 kVp at 25 mAs and an 8:1 ratio grid. What is the correct change in the exposure technique to maintain radiation exposure to the IR when changing to a 12:1 ratio grid? | back 7 no data |
front 8 A. 60 kVp at 25 mAs B. 70 kVp at 25 mAs C. 70 kVp at 50 mAs D. 60 kVp at 50 mAs | back 8 no data |
front 9 8. Without exposure technique compensation, increasing the OID by 4 for a knee film image would: 1. increase magnification 2. decrease exposure to IR 3. increase contrast A. 1 and 2 only B. 1 and 3 only C. 2 and 3 only D. 1, 2 and 3 | back 9 no data |
front 10 9. A quality image is produced using 80 kVp at 10 mAs with a 6:1 ratio grid. Calculate the change in exposure technique to maintain radiation exposure to the IR when changing to a 12:1 ratio grid. A. 60 kVp at 17 mAs B. 80 kVp at 20 mAs C. 60 kVp at 6 mAs D. 92 kVp at 5 mAs | back 10 no data |
front 11 10. Which of the following factors does not affect spatial resolution? A. Focal spot size B. SID C. OID D. Grid | back 11 no data |
front 12 11. Which of the following factors does not affect the radiation exposure to the IR? A. Collimation B. Focal spot size C. Compensating filters D. Body habitus | back 12 no data |
front 13 12. What exposure factor change is recommended to maintain radiation exposure to the IR when increasing the patient thickness by 5 cm? A. Double the kVp B. Double the mAs C. Decrease kVp by 15% D. Increase mAs by 15% | back 13 no data |