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| Result: Searchterm 'Sequences'
found in 59 messages |
| Result Pages: [1] 2 3 4 5 6 7 8 9 10 11 12 |
More Results:  Database (188) News Service (6) Resources (8) |
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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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John Smith
Wed. 11 Nov.15,
22:14
[Start of:
'Faster pulse sequences'
0 Reply]
Category:
General
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| 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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Al Berthiaume
Tue. 13 Jan.09,
19:50
[Start of:
'Siemens TRIO sequences'
1 Reply]
Category:
Protocols
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| Siemens TRIO sequences |
I'm looking for Siemens Trio tried and tested sequences. Specifically, MRA COW, MRV-head and a T2 SPACE of the shoulder.
Anyone...?
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Shelly Martinez
Thu. 3 Apr.08,
14:57
[Start of:
'STIR sequences'
1 Reply]
Category:
Sequences and Imaging Parameters
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| STIR sequences |
I am a little confused on STIR techniques.... I was always taught that you keep your TR down on STIR sequences around 2200 or so, Is this true?
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Elena sussi
Tue. 13 Nov.07,
13:32
[Start of:
'Haste and Rare sequences'
3 Replies]
Category:
Sequences and Imaging Parameters
|
| Haste and Rare sequences |
HASTE and RARE are developed only bay Siemens?
Has every other head office (Philips, GE, Toshiba, etc) these two sequences with these names or with other names?
I need to understand it, because I have to "edit" an important document, where I can't quote any specific MR producer!!
Could I perhaps say "sequences as HASTE" or "sequences type RARE"??
Thank you.
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