Gradient echo – Dr Donald McRobbie

Gradient echo GRE MRI from picture to proton

Gradient echo signal and contrast

December 21, 2018

Gradient echo (GE, GRE, FLASH, SPGR, T1-FFE, FE) is one of the hardest elements of MRI to understand. Image signal and contrast in spoiled gradient echo depends upon three user-selected parameters: Flip angle <90º TR – repetition time, typically > 10 ms TE – echo time, typically > 2 ms Signal and contrast also depend … More Gradient echo signal and contrast

Gradient echo signal and contrast calculator

November 24, 2018

First choose tissue T1 and T2 values.Then select your scanning TR, TE and flip angle. You can also set a field inhomogeneity factor. The calculator uses an estimated value of T2* based upon this and the tissue T2.The graph shows the signal intensity (max = 1) for both tissues, the contrast and the relative contrast … More Gradient echo signal and contrast calculator

Dr Donald McRobbie

Medical physics and MRI

Tag: Gradient echo

Gradient echo signal and contrast

Gradient echo signal and contrast calculator