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| Result: Searchterm 'Real'
found in 40 messages |
| Result Pages: 1 2 3 4 5 6 7 [8] |
More Results:  Database (47) News Service (47) Resources (9) |
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Rud Spring
Fri. 7 Apr.06,
21:02
[Reply (1 of 2) to:
'Slew Rate'
started by: 'Reader Mail '
on Sun. 2 Apr.06]
 Category:
Sequences and Imaging Parameters
|
| Slew Rate |
It's about how fast the gradient coil reaches the amplitude. It's the steepness of the curve. The time it takes to reach this amplitude is often referred to as "rise time".
At certain high slew rates the gradient switching is so fast that peripheral nerves get stimulated. A warning may be given like "possible peripheral nerve stimulation". It's not really dangerous, but you can feel your muscles contract a little. Some people are more sensitive to it than others.
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|  View the whole thread | | |
Kareem Badr
Tue. 24 Jan.06,
14:07
[Start of:
'Help Please'
1 Reply]
Category:
General
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| Help Please |
Dear Dr.Dan McGuan;
I’m Kareem Badr from Egypt, Cairo University, faculty of Engineering Systems and biomedical Engineering department.
Actually I have to make a technical report about MRI and really I need your help, so could please help me!
I want to ask if the MRI units are specialized for certain applications only, i.e. is Cardiac MRI
used for cardiac applications only?
If yes, could you please tell me all the applications and the units used
For example
Angiography MRI
Cardiac MRI
.
.
.
etc
Thanks so much, and sorry for the long mail
Waiting for your reply
Kareem Badr
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RAWLE CONLIFFE
Thu. 12 Jan.06,
08:59
[Reply (2 of 4) to:
'Contrast MRA COW.'
started by: 'Marilia White'
on Thu. 3 Mar.05]
Category:
Contrast Agents
|
| Contrast MRA COW. |
ITS REALLY NOT NECESSARY TO ROUTINELY DO CE MRA OF THE "COW". BY UTILIZING A 3D SPOILED FAST GRE THEN MANUALLY RECONSTRUCTING THE MIP THE ARTERIES ARE SUFFICIENTLY ENHANCED.
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| | View the whole thread | | |
Frank Wasserman
Mon. 7 Nov.05,
14:00
[Reply (1 of 2) to:
'Head Coil'
started by: 'M Shultz'
on Mon. 7 Nov.05]
Category:
Funktional MRI
|
| Head Coil |
A researcher who uses our system got a post card from a company:
http://www.insightneuroimaging.com/
He asked me if I have ever heard of them, and I thought I saw them at ISMRM but I don’t remember. Their head coil looks like more of an fMRI coil, but the lack of material in front of the face looks really nice for patients.
Frank
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| | View the whole thread | | |
Tomas Randell
Mon. 20 Jun.05,
19:38
[Reply (1 of 3) to:
'Metalic particles into the cornea'
started by: 'Jorge Cazal'
on Mon. 13 Jun.05]
Category:
Safety
|
| Metalic particles into the cornea |
For my personal opinion, it is not to expect that these microscopic steel particles are a contraindication for an MRI of the head. An injury of the patient by dislocation or
torque presents not a real risk because of the small size.
The possibility of heating is minimal and can be additional lowered by reducing the SAR. Artifacts may reduce the image quality a little, but diagnostic brain imaging is certainly possible. The use of a mid or low field MRI machine will also reduce any risks.
Hope this will help.
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