Image Production Flashcards
What is receptor exposure?
The overall amount of radiation to reach the IR
What is mAs?
the main controlling factor of receptor exposure
Relationship between receptor exposure and mAs?
Direct relationship
What is contrast?
Difference in adjacent areas
What are the controlling factors of contrast
kVp and LUT
What is the main controlling factor of subject contrast?
kVp
What is the main controlling factor of image contrast?
LUT
What are geometric factors?
Recorded Detail (Spatial Resolution)/Distortion
What is the grid ratio formula?
Grid Ratio= height (h)
————–
distance (d)
Receptor Exposure and Contrast will always be inversely proportional, except for:
Filtration
What is the grid conversion formula?
mAs 1 = conversion factor 1
——— —————————–
mAs 2 = conversion factor 2
Sampling frequency is the main controlling factor of what in digital radiography?
Spatial Resolution