• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

T2 prolongation due to scalar decoupling in multiple echo sequences

M

Mark R

Diamond Member
I can understand why a non-specific 180 degree refocusing pulse shouldn't refocus J-coupling.

I also, think I understand, how repetitive selective pulses can decouple a system - e.g. an AX system by repetitively inverting the X spin so that the A spin feels an average.

How is scalar coupling inlvolved in the mechanism of T2 prolongation of fat in MRI using multiple echo sequences? My understanding is that these pulses are non-specific and hence shouldn't cause much decoupling - yet the prolongation of T2 is quite significant.

What's going on? Any one know? Any good pointers?
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top