Exam (elaborations)
RADT 2401 TEST #1
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Exam of 2 pages for the course radt at radt (RADT 2401 TEST #1)
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RADT 2401 TEST #1Name the type of exam that fluoroscopy is considered? - Answer -Dynamic
Who commonly controls fluoroscopy? - Answer -Radiologist
mA range for fluoroscopy - Answer -between 0.5-5
SOD for fixed fluoroscopy - Answer -15 inches
What is each part of the image intensifier tube and its function - Answer -input screen-
converts beam to light
photocathode- light to electrons
electrostatic lens- focus electrons to anode
anode- allows electrons to output screen
output screen- absorbs electron and emits light to make images
What is brightness gain - Answer -increased intensity, caused by acceleration and
focusing of electrons
What does the image intensifier control based on it shape - Answer -shaped concave,
controls distortion
Factors that determine image intensification fluoroscopy resolution - Answer -minification
gain, input and output diameter, electrostatic focal point
What is it called when there is distortion of the image around the edges of the image
intensifier - Answer -Vignetting
most common solution to quantum mottle - Answer -increase mAs
Post-processing features in fluoro - Answer -digital subtraction, edge enhancement,
window and leveling
who/what is the source of radiation exposure to personmel - Answer -patient
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