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fang bright

Sun. 15 Jun.08,
08:56

[Start of:
'how to fill holes and gaps in rough sensitivity map?'
0 Reply]


 
  Category: 
Sequences and Imaging Parameters

 
how to fill holes and gaps in rough sensitivity map?
Hi, everyone:

I am calculating the sensitivity map for SENSE.
However there are quite some holes and gaps in the rough sensitivity map.
The locally polynomial fit sugggested by the SENSE paper seem not be able to fil those holes.(see the attachment).

Does anyone has an idea for filling these holes ?

Thank you very much!
 
 
sensitivity map using polynomial fit


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Tomas Randell

Thu. 16 Dec.04,
05:03

[Reply (2 of 4) to:
'CE MRA of the Liver'
started by: 'bob mitchell'
on Sun. 5 Dec.04]


 
  Category: 
Applications and Examinations

 
CE MRA of the Liver
Like lily lily we use a muliphase MRA with 3 phases (artery, portal vein and late phase).
We use an amount of 30 ml Gadolinium with an injection rate of 5 ml/sec. With this high flow rate, you get a more concentrated bolus and therefore a higher contrast for the second phase. We use CENTRA k-space acquisition and reduce the scan time with SENSE (a parallel imaging technique like ASSET ), this will help for a better timing.
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