CT Flashcards
1
Q
What amount of head CTs require contrast?
A
50 - 90%
2
Q
What things are necessary for brain function?
A
Glucose and oxygen
3
Q
What is dose modulation?
A
Dose determined during the topogram to calculate the lowest dose possible while maintaining image quality
4
Q
What line is used to position for head protocols?
A
IOML perp to the floor
5
Q
What is prospective ECG gating?
A
Scanning the heart only during times of the least cardiac motion in the cardiac cycle
6
Q
What is retrospective ECG gating?
A
Continuous scanning of the heart then creating images retrospectively with data collected at certain ECG gating points
