search

leoliuf / MRiLab

A Numerical Magnetic Resonance Imaging (MRI) Simulation Platform
https://leoliuf.github.io/MRiLab/
BSD 2-Clause "Simplified" License
204 stars 64 forks source link

Frequency Encoding #29

Closed ElmiraYazdani closed 5 years ago

ElmiraYazdani commented 5 years ago

Hi, I have a problem with frequency encoding According to the below image in VCtl. TE when we set TE, the frequency encoding (tMiddle) should be equal to VCtl.TE, here TE is 8ms but tMiddle in frequency direction is somewhere around 9. Actually, I did not change anything here, it is your default. If I change TE to every other value, the tMiddle will change to a number near VCtl.TE+1 or +2. How can I fix this problem? 1

leoliuf commented 5 years ago

TE is calculated with regards to the position of the excitation RF pulse. Notice that the RF pulse in your cases starts from ~1ms.

ElmiraYazdani commented 5 years ago

Thanks