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| Result: Searchterm 't2'
found in 66 messages |
| Result Pages: 1 2 3 4 [5] 6 7 8 9 10 11 12 13 14 |
More Results:  Database (155) News Service (28) Resources (5) |
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Belinda Williams
Mon. 21 Jul.14,
21:44
[Start of:
'?'
1 Reply]
 Category:
Coils
|
| ? |
I work on GE excite open speed. On lumbar spine t2 axials, it appears like the coil looses signal and makes image dark and grainy. The coil gives good signal on the other sequences and tests good when engineer has tested it. The sag t2 is bright like it should but ax is dark. Any ideas why?
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Mario Terakaj
Thu. 6 Feb.14,
08:50
[Start of:
'Tirm'
0 Reply]
Category:
Sequences and Imaging Parameters
|
| Tirm |
Dears!!
I try to understand why TIRM have a long TR and long TE ( value of T2 image ) but sequences bring a T1 mark
Thanks!!!
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aaron yonts`
Thu. 19 Sep.13,
07:56
[Reply (1 of 3) to:
'why there is T2* but not T1*'
started by: 'Isa Toni Toni'
on Wed. 24 Jul.13]
Category:
Sequences and Imaging Parameters
|
| why there is T2* but not T1* |
i may just be giving general info but a t2* is aquired from a gradient echo compared to a t2 with a spin echo. according to mri in practice a t2* can help show some things a normal t2 would not, such as ms plaques in a cervical spine
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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
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| 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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Eric Gonzalez
Thu. 11 Oct.12,
12:52
[Reply (1 of 2) to:
'STIR-TR'
started by: 'MICHAEL LONG'
on Fri. 14 Nov.08]
Category:
Sequences and Imaging Parameters
|
| STIR-TR |
My understanding with Stir is to have longer TR and shorter TE than a normal T2 sequence. Ive also wondered this question and have not found a definite answer as I guess it could vary from manufacturer to manufacturer?
Im on a Siemens Avanto 1.5T, and typically our STIR sequence ranges from:
TR = 4000 - 10,000ms (I try not to go beyond 7,000)
TE = 20 - 40ms
...obviously you can adjust values for different outcomes depending what you are trying to identify.
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