|
Magnetic
Resonance -
Technology
Information
Portal |
Welcome to MRI Technology • |
|
|
 | Info
Sheets |
| | | | | | | | | | | | | | | | | | | | | | | | |
 | Out-
side |
| | | | |
|
| | | | | |
| Result: Searchterm 'Coil'
found in 50 messages |
| Result Pages: 1 2 3 4 5 6 7 8 [9] 10 |
More Results:  Database (193) News Service (27) Resources (17) |
|
|
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.
|
|  View the whole thread | | |
Reader Mail
Sun. 2 Apr.06,
14:47
[Start of:
'Open MRI'
0 Reply]
Category:
Coils
|
| Open MRI |
What is the difference between rapid coil, multiple array and QD coil?
And which one is the best?
|
| | Reply to this thread
(login or register first) | |
Thomas Rice
Thu. 9 Feb.06,
18:45
[Reply (2 of 5) to:
'Protection Against Noise'
started by: 'Donna Ponticello'
on Sat. 13 Aug.05]
Category:
Patient Care and Comfort
|
| Protection Against Noise |
We fold up wash cloths and put pads against those. The little ones kinda like there head to be snugged in the coil. Also they like to be warm, try turning off the bore fan and warm the room a little. Good Luck!
|
| | 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
|
| | View the whole thread | | |
Dan McGuan
Thu. 6 Oct.05,
20:35
[Reply (1 of 2) to:
'Machine Opening artifact'
started by: 'Neil Brice'
on Tue. 28 Sep.04]
Category:
Artifacts
|
| Machine Opening artifact |
Neil,
I think you're talking about the edges of the shimmed volume of the magnet, or the coil.
Magnets are shimmed to a specific volume in the field (every model magnet is different). When you attempt to scan an object that reaches the edge of this volume you will see distortion from imaging the unshimmed area of the magnet.
Also shimming large objects that exceed the range of the receiver portion of the coil will cause distortions.
Hopefully this answers your question?
Good Luck,
Dan McGuan
|
| | View the whole thread | |
| |
| | Result Pages : 1 2 3 4 5 6 7 8 [9] 10 | |
|
| |
 | Look
Ups |
| |
|
MR-TIP.com uses cookies! By browsing MR-TIP.com, you agree to our use of cookies. | | | [last update: 2024-02-26 03:41:00] |
|
|
bottom
top
