MRA PT 2

how is contrast in mra maximized

by enhancing the signal from flowing spins and suppressing signal from stationary spins
what are two ways to suppress stationary spins
- Perform 2 acquisitions and subtract them
- Short TR to saturate stationary spins
what is DSA or digital subtraction MRA

when contrast is selectively produced for moving spins during 2acquisitons
where can we place saturation pulses that will selectively suppress venous flow: leveing only arterial flow

Author

MriSensei

339126

Card Set

MRA PT 2

Description

MRI

Updated

2018-03-27T16:10:53Z

Show Answers