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MRI Forum: Improving MEDIC/MERGE/M-ffe a ...
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  Category:  Sequences and Imaging Parameters
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Dan Lopez

Sun. 27 Aug.23,
00:03
Improving MEDIC/MERGE/M-ffe and GRE/FFE image quality
I work on an Ingenia Elition Philips scanner. I'm having trouble with Axial C-spine sequences for both M-ffe and FFE. On the M-ffe there is always motion in the cord and the contrast is poor. With the FFE the closer we get to the lungs the worse the quality becomes. There is usually loss of signal and the image doesn't look uniform. I've tried a bunch of different parameter combinations to try giving it more signal and contrast while decreasing the motion in the cord but it never seems to look that good. Any suggestions would be appreciated.
 
 

Mffe & FFE

Renate Semrau

Mon. 28 Aug.23,
07:23
Hi,
Sequences with multiple echoes are unfortunately sensitive to motion and flow artifacts, with the mFFE the echoes are still cumulated afterwards. The use of the head-neck coil provides better SNR. Important are good flow compensation, rest slab, try out foldover direction l/r vs. a/p. Shimming may help, synergy is sometimes better as clear, don't take too many slices, but maybe the signal loss is also a technical problem. Problems in the lung region are common. In short, we use 2D T2 TSE with continuous flow comp.


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  Category:  Sequences and Imaging Parameters
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