Basics of Radiographs Flashcards
0
Q
2 ways to improve x-ray absorption differences?
A
alter absorption - contrast
more sensitivity - CT
1
Q
How does atomic number of tissue affect absorption?
A
to the 4th power
2
Q
2 kinds of contrast agents
A
Positive - increase absorption (barium, iodine
Negative - decrease absorption (air, CO2)
