Fluoroscopy Exam Actual Exam
Questions With Reviewed 100%
Correct Detailed Answers
Guaranteed Pass!!
1. Which of the following can adjust the mottle level of an image?
1. changing mA
2. changing kVp
3. changing exposure factors
4. increasing the number of available photons - ANSWER ALL OF THEM
2. Total image brightness gain of an image intensifier system consists of ______ and _______. -
ANSWER Flux Gain and Minification Gain.
3. To calculate gain, assume that modern image intensifiers are constructed with a ____to____
inch output phosphor - ANSWER 1 to 2 inch
4. The electrons in the II tube are sped up by: - ANSWER the anode
5. The anode maintains a high potential difference of about: - ANSWER 25,000 volts (or 25
kVp)
6. The increased brightness of the output phosphor is due to which of the following?
1. flux gain
, 2. minification gain
3. smaller size of the output phosphor
4. additional energy of the electrons when they are sped in up in the II tube - ANSWER ALL
OF THEM
7. What is the brightness gain of an Image intensifier that has a 14 inch input phosphor, a
standard image intensifier and a flux gain of 100? - ANSWER 19,600 brightness gain.
Formula on #24
8. Brightness gain ________ image intensity and quality as the tube ages. - ANSWER
diminishes
9. The newer term for brightness gain is _______ which measures image intensifier
performance. - ANSWER Conversion Factor (CF)
formula for CF on #25
10. In mag mode, the FOV is _______. - ANSWER decreased
11. A patient's radiation dose is (increased or decreased) by ______ times, when switching
from a normal 9" mode to a 6" magnification mode. - ANSWER increased by 2.25 times
Formula on handout question 27.b
12. Contrast and resolution are (increased or decreased) with Cesium iodide Image intensifier
tubes - ANSWER increased
Questions With Reviewed 100%
Correct Detailed Answers
Guaranteed Pass!!
1. Which of the following can adjust the mottle level of an image?
1. changing mA
2. changing kVp
3. changing exposure factors
4. increasing the number of available photons - ANSWER ALL OF THEM
2. Total image brightness gain of an image intensifier system consists of ______ and _______. -
ANSWER Flux Gain and Minification Gain.
3. To calculate gain, assume that modern image intensifiers are constructed with a ____to____
inch output phosphor - ANSWER 1 to 2 inch
4. The electrons in the II tube are sped up by: - ANSWER the anode
5. The anode maintains a high potential difference of about: - ANSWER 25,000 volts (or 25
kVp)
6. The increased brightness of the output phosphor is due to which of the following?
1. flux gain
, 2. minification gain
3. smaller size of the output phosphor
4. additional energy of the electrons when they are sped in up in the II tube - ANSWER ALL
OF THEM
7. What is the brightness gain of an Image intensifier that has a 14 inch input phosphor, a
standard image intensifier and a flux gain of 100? - ANSWER 19,600 brightness gain.
Formula on #24
8. Brightness gain ________ image intensity and quality as the tube ages. - ANSWER
diminishes
9. The newer term for brightness gain is _______ which measures image intensifier
performance. - ANSWER Conversion Factor (CF)
formula for CF on #25
10. In mag mode, the FOV is _______. - ANSWER decreased
11. A patient's radiation dose is (increased or decreased) by ______ times, when switching
from a normal 9" mode to a 6" magnification mode. - ANSWER increased by 2.25 times
Formula on handout question 27.b
12. Contrast and resolution are (increased or decreased) with Cesium iodide Image intensifier
tubes - ANSWER increased
