Functional Medical Imaging > Questions based > Flashcards
if signal is 40hz off resonance, how many often would it oscillate
1/40 = 25ms
Calc B-Field required to tip 189 degress?
180/360 = γ * B1 * TAU
How is T1 and Relaxitivity related
inversely
Gd-DTPA T1 equaution
1/T1’ = 1/T1 +[Gd-DTPA]r