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| Result: Searchterm 'Bit'
found in 15 messages |
| Result Pages: 1 2 [3] |
More Results:  Database (35) News Service (35) Resources (8) |
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Matthew Barker
Tue. 8 Jun.10,
04:28
[Reply (2 of 3) to:
'ARMRIT Parenteral Procedures'
started by: 'Matt B.'
on Wed. 3 Jan.07]
 Category:
General
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| ARMRIT Parenteral Procedures |
I thought I'd follow up on this a few years later. The illegal bit is nonsense. The ARMRIT is an ACR approved accrediting body. Many states I've encountered will honor the ARMRIT for a state license.
The law varies from state to state but in most cases, a venipuncture/phleb certification is fine. ACLS coursework goes a long way as well and will even set you ahead of most ARRT's.
You are injecting under the direction of an MD, regardless of your certification.
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|  View the whole thread | | |
Lyle Downing
Sat. 26 Sep.09,
20:27
[Reply (4 of 12) to:
'90 excitation pulse vs 180 inversion pulse'
started by: 'Bjorn Redfors'
on Sat. 27 Jun.09]
Category:
Basics and Physics
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| 90 excitation pulse vs 180 inversion pulse |
Perhaps this will help shed some light on this.
Keep in mind that before the initial 90 pulse all protons contributing to the MR signal are in a relaxed state completely in alignment with the static magnetic field. Flipping them 90 degrees into the transverse plane does align them up initially and yes they do relax at different rates as they give up their energy. The 180 pulse takes whatever state they are in at the time and flips them in order to not make them all 180, but to quickly get a cleaner non contaminated representation of the tissues in question. So for example after the initial 90 and after letting the protons relax for a bit you might see water at say 50 degrees and fat at say 70 degrees flipping them 180 keeps whatever energy state they are in the time.
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| | View the whole thread | | |
Steven Smith
Wed. 20 Dec.06,
22:46
[Start of:
'scan matrices and steps'
2 Replies]
Category:
General
|
| scan matrices and steps |
Hello,
I've just joined this forum because I'm a Japanese-English translator and often translate MRI related material, but my knowledge is a bit patchy. I have a rather basic question. Part of a product specification goes (translated):
Scan Matrix: 64 – 1024 x 64 – 1024; 4 steps per
I assume this is 4 steps per scan, but wanted to check just in case. Also could anyone explain what is meant by steps in this context?
Thanks very much
Steven Smith
www.fwtranslations.co.uk
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Susan Angelico
Thu. 15 Sep.05,
20:07
[Reply (1 of 3) to:
'3T imaging parameters'
started by: 'Nancy Dudek'
on Fri. 26 Aug.05]
Category:
Sequences and Imaging Parameters
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| 3T imaging parameters |
At 3T the T1 time is longer (so the TR should also be longer) and the T2 time is shorter (TE can be shorter). However, when we got a 3T machine we tested different TR and TE's and found out that in practice the useful range don't has a big difference from that of a 1.5T MR system.
The contrast looks a bit different - that's normal.
In addition, ask the manufacturer.
There are a lot of other parameters that affect the contrast in 3T.
Hope this will help
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| | View the whole thread | | |
salah almahal
Tue. 1 Feb.05,
21:55
[Reply (2 of 6) to:
'Brain Protocol'
started by: 'Oscar Cidri'
on Tue. 7 Sep.04]
Category:
Protocols
|
| Brain Protocol |
hi Oscar,
T2,FLAIR LONG TR and T1-------- TRANSVERSE.
FLAIR ,T1 --------------- SAGITTAL.
DWSSH.
3D ANGIO.
This for routine brain ,although the protocol depend on the clinical diagnosis.
is it for ms,infarction,pitutary abnormalities,orbit abnormalities,ect.....
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