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| Result: Searchterm 'sequence'
found in 105 messages |
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More Results:  Database (378) News Service (28) Resources (10) |
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William Richardson
Tue. 20 Jun.17,
12:33
[Start of:
'MRI 1w/kg sequences Siemens Avanto FIT'
0 Reply]
 Category:
Sequences and Imaging Parameters
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| MRI 1w/kg sequences Siemens Avanto FIT |
I have recently been asked to build protocols for Spines and extremities that are 1 watt per kilogram SAR. In speaking with Applications at Siemens they inform me that I can only change certian parameters to help lower SAR but it will all be dependent upon each patient and which sequences are running. I need to present to our MRI QA commitiee if we can or if we cannot do 1w/kg SAR as we are determining if we can scan cochlear implants? Does anyone have any ideas or solutions?
Thank You
Will R.
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Marta Lancione
Thu. 5 May.16,
14:55
[Start of:
'Drawing MRI sequence'
0 Reply]
Category:
General
|
| Drawing MRI sequence |
Does anyone know of existing LaTeX macros or packages or any other software for drawing Magnetic Resonance Imaging pulse sequences?
I didn't find anything online. Thank you so much for your help!
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John Smith
Wed. 11 Nov.15,
22:14
[Start of:
'Faster pulse sequences'
0 Reply]
Category:
General
|
| Faster pulse sequences |
Hi,
I have been learning about faster MRI sequences and have two questions
1) With "Fast (Turbo) gradient echo", in which we apply a spoiler gradient, do we not eventually end up with no longitudinal magnetization because TR is always shorter than T1? Hence shouldn't we eventually get no signal at all?
2) in SSFP (Steady-state free precession) we can apply an RF pulse of 90 degrees (in which T1>>T2) to get heart-blood contrast. How is this any different to a standard spin-echo sequence in terms of timing?
Thank you
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Windy F
Sat. 3 May.14,
17:32
[Start of:
'GE SWAN sequence parameters.'
0 Reply]
Category:
Sequences and Imaging Parameters
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| GE SWAN sequence parameters. |
GE SWAN sequence parameters. Does anyone know how to make this faster, but not effect image quality?
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Glad Mihai
Mon. 26 Sep.11,
11:53
[Start of:
'Siemens CINE Sequence details'
0 Reply]
Category:
Sequences and Imaging Parameters
|
| Siemens CINE Sequence details |
Hello there fellow NMR enthusiasts, I have a question regarding the CINE-Sequence that a Siemens 3 T scanner does, in particular I am interested in the retro iPAT sequence. What I want to know is what the exact parameters are.
For example, I have set a TR of 2.7 ms, but the actual recording time of one scan is close to 300 ms. Why is that? What else gets added to this time?
If anyone has links to useful information about sequences, then I am more than happy to check them out.
Regards, Glad
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