Fluoroscopy (physics)
test with 100% correct
answers
Fluoroscopy is a _____ type of imaging modality. - answer dynamic
(diagnostic radiography is static)
Fluoroscopy was invented by _____ in the year _____. - answer Thomas
Edison in 1896
Image intensifiers were created in _____ to electronically amplify the
brightness of an image by _____-_____ times. - answer 1948
500-8,000
The principal advantage of image intensified fluoro is an increased
_____. - answer brightness
Structures designed for vision:
, a.) Rods are...
b.) Cones are... - answer a.) Sensitive to low light levels (scotopic)
b.) Sensitive to bright light levels (photopic)
Image brightness must be high and is controlled by ... -
answer ...automatic brightness control (ABC)
In fluoro procedures, generally (low/high) kVp and (low/high) mA are
preferred. - answer high kvp
low mA
*kvp is based on body part and mA is usually 5)
Image Intensifier:
What does the glass envelope do? - answer - Surrounds all of the
components and provides mechanical support of internal components
- Has a vacuum tube
What does the input phosphor do? What is it made from? - answer -
Receives x-rays from the tube and converts them into light
- Composed of cesium iodide
test with 100% correct
answers
Fluoroscopy is a _____ type of imaging modality. - answer dynamic
(diagnostic radiography is static)
Fluoroscopy was invented by _____ in the year _____. - answer Thomas
Edison in 1896
Image intensifiers were created in _____ to electronically amplify the
brightness of an image by _____-_____ times. - answer 1948
500-8,000
The principal advantage of image intensified fluoro is an increased
_____. - answer brightness
Structures designed for vision:
, a.) Rods are...
b.) Cones are... - answer a.) Sensitive to low light levels (scotopic)
b.) Sensitive to bright light levels (photopic)
Image brightness must be high and is controlled by ... -
answer ...automatic brightness control (ABC)
In fluoro procedures, generally (low/high) kVp and (low/high) mA are
preferred. - answer high kvp
low mA
*kvp is based on body part and mA is usually 5)
Image Intensifier:
What does the glass envelope do? - answer - Surrounds all of the
components and provides mechanical support of internal components
- Has a vacuum tube
What does the input phosphor do? What is it made from? - answer -
Receives x-rays from the tube and converts them into light
- Composed of cesium iodide
