Imaging of human brain activity at 0.15 T using fluid attenuated inversion recovery (FLAIR) pulse sequences.
A 3-4% change in signal intensity correlated with visual stimulation was observed in the occipital lobes of three normal volunteers examined with MRI at 0.15 T using fluid attenuated inversion recovery pulse sequences. Similar results were observed at 1.0 T. A double difference technique in which difference images are themselves opposed provided an increase in sensitivity.
Hajnal
J V
JV
Picker International, Wembley, Middlesex, United Kingdom.
Collins
A G
AG
White
S J
SJ
Pennock
J M
JM
Oatridge
A
A
Baudouin
C J
CJ
Young
I R
IR
Bydder
G M
GM
D001921:Brain / Q000033:anatomy & histology / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010775:Photic Stimulation