slides - Brainmapping.ORG
slides - Brainmapping.ORG
slides - Brainmapping.ORG
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Spin Echo<br />
Spin Echo - Refocusing<br />
RF<br />
90°<br />
180°<br />
TR<br />
TE<br />
Signal<br />
Radiology<br />
How do you adjust the TR<br />
How do you adjust the TE<br />
Radiology<br />
http://en.wikipedia.org/wiki/File:HahnEcho_GWM.gif<br />
Spin Echo Contrast<br />
Spin Echo Parameters<br />
Spin Density Short Long<br />
T1-Weighted Short Intermediate<br />
T2-Weighted Intermediate Long<br />
A Echo / ⇢<br />
⇣<br />
⌘<br />
1 e TR/T 1<br />
e TE/T 2<br />
Spin Echo Contrast<br />
Spin Echo Parameters<br />
Spin Density 10-30ms >2000ms<br />
T1-Weighted 10-30ms 450-850ms<br />
T2-Weighted >60ms >2000ms<br />
ρ<br />
T2<br />
Long<br />
TR<br />
Short<br />
T1<br />
X<br />
Radiology<br />
Radiology<br />
Short<br />
TE<br />
Long<br />
Images Courtesy of Mark Cohen
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