Rapid T1 estimation using tagged magnetization-prepared gradient-echo MR imaging.
A technique for estimation of the longitudinal relaxation time of a large homogeneous object with an acquisition time of 4 s or less was developed by combining spatially selective rf tagging pulses with a T1-weighted magnetization-prepared gradient-echo sequence. Multiple 5-mm-wide tagged areas are laid orthogonal to the imaging section of interest. The contrast between each tag and the untagged regions differs because each tag is produced at a different time. The T1 value is determined from the nulling time at which tagged and untagged areas have no contrast.
Niitsu
M
M
Department of Radiology, University of Tsukuba, Japan.
Campeau
N G
NG
Riederer
S J
SJ
Anno
I
I
Itai
Y
Y
D000273:Adipose Tissue / Q000033:anatomy & histology; D001853:Bone Marrow / Q000033:anatomy & histology; D003300:Copper; D019327:Copper Sulfate; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007866:Leg / Q000033:anatomy & histology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008961:Models, Structural; D009132:Muscles / Q000033:anatomy & histology; D012815:Signal Processing, Computer-Assisted; D013977:Tibia / Q000033:anatomy & histology
D003300:Copper; D019327:Copper Sulfate