Scanning Tips Flashcards
1
Q
⬆️ SNR
A
⬆️ NEX = ⬆️ scan time
⬆️ FOV (160 to 165)
⬆️ BW
⬇️ Matrix (320 to 288)
2
Q
Receive only coils create _____ artifact.
A
Aliasing (wrap) - the inherent body coil is used to transmit RF which excites tissue outside of the coil.
3
Q
Why do transmit/receive coils decrease SAR?
A
Transmits RF to only the body part, turns off and receives a signal. Little chance of wrap, necessary for implants.
4
Q
PD image shows water/edema _____ than muscle.
A
Brighter
5
Q
To reduce metal distortion on 3T
A
Double receiver bandwidth to create level observed by 1.5T
