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MRI Forum
'Coil'
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Brent Johnson

Wed. 21 Aug.13,
19:38

[Start of:
'Hitachi Airis II question'
0 Reply]


 
  Category: 
Sequences and Imaging Parameters

 
Hitachi Airis II question
I have a question for a Hitachi Airis II .3T non-upgraded gradients
On T2 FSE sequences especially on thumb sagittal slices. Image quality very poor, grainy. What is ideal bandwidth and TE settings for improving image quality? Also is positioning and angle of slice a factor in image quality. The closer the anatomy is to edge of coil, does that effect image quality.

Thanks Brent
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Reader Mail

Fri. 26 Jul.13,
16:51

[Reply (1 of 2) to:
'STIR and l-spine'
started by: 'shruti soni'
on Wed. 27 Feb.13]


 
  Category: 
Sequences and Imaging Parameters

 
STIR and l-spine
I know from working on various coils and testing the images will vary with synthetic (phantoms) vs actual patient. Main item in coil repair is it scans correct w/a human. And if when you test the coil per Philips given guidelines and set parameters for testing SNR, etc. the coil may be just fine. 2nd the synthetic phantom your using is not compatible with that coil or in the system - found this out with 1.5T phantoms don't work on 0.2T coils.
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Kimberly Wilridge

Fri. 26 Jul.13,
16:42

[Start of:
'GE Signa - 17,18,19 Phantoms Found looking for 1'
1 Reply]


 
  Category: 
Coils

 
GE Signa - 17,18,19 Phantoms Found looking for 1
Getting this message on specific coils (CTL) 17,18,19 phantoms found looking for 1. Message never seen before and not sure if coils issue
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shruti soni

Wed. 27 Feb.13,
00:25

[Start of:
'STIR and l-spine'
1 Reply]


 
  Category: 
Sequences and Imaging Parameters

 
STIR and l-spine
we have got new spine coil for our 1.5 T philips achieva scanner. App came in and added new software and protocoal for that. when we run STIR sequence for l- spine with regular size patient, it comes out nice. However, with hypersthenic patient, it comes out very dark, suppressing signal from bone,fat and only shows csf in cord. could it be that TI not optimal for hypersthenic patient?
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Tetiana Dadakova

Fri. 17 Feb.12,
10:07

[Reply (1 of 2) to:
'MR750: ASSET Artifact or 32 Channel coil?'
started by: 'Reader Mail'
on Tue. 26 Jul.11]


 
  Category: 
Funktional MRI

 
MR750: ASSET Artifact or 32 Channel coil?
Hi,

We do have the same artifact on the same scanner with 32 channel coil. I was thinking about herringbone artifact as well first, but then some kind of "spikes" of very high or low intensity should be seen in k-space, which I don't see in our images. We have this artifact only for DTI.

If you find out what it is, please let me know.

Best regards.
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