146 / 945
Scan Time
•
Frequency encoding done at time of echo
•
Phase encoding done over many TRs
•
Time between TR-TE is dead time
RF
G
ss
G
PE
G
RO
90
°
180
°
TR
90
°
slice loop
Scan time = TR
×
N
av
×
N
PE
|
|
146 / 945
Scan Time
•
Frequency encoding done at time of echo
•
Phase encoding done over many TRs
•
Time between TR-TE is dead time
RF
G
ss
G
PE
G
RO
90
°
180
°
TR
90
°
slice loop
Scan time = TR
×
N
av
×
N
PE