|
Magnetic
Resonance -
Technology
Information
Portal |
Welcome to MRI Technology • |
|
|
 | Info
Sheets |
| | | | | | | | | | | | | | | | | | | | | | | | |
 | Out-
side |
| | | | |
|
| | | | | |
| Result: Searchterm 'Matter'
found in 13 messages |
| Result Pages: 1 2 [3] |
More Results:  Database (10) News Service (28) Resources (3) |
|
|
Reader Mail
Wed. 12 Dec.07,
10:07
[Reply (1 of 2) to:
'double ir physic'
started by: 'soontorn siriserussa'
on Sun. 2 Dec.07]
 Category:
Sequences and Imaging Parameters
|
| double ir physic |
Different types of double inversion recovery (DIR, 2IR) sequences are used to improve the suppression of blood signal (black blood technique) or to null the signals from two different tissue types (e.g. white matter and cerebrospinal fluid).
The black blood technique (used in cardiovascular MRI) works with two inversion pulses, where the first pulse is nonselective and the second pulse is slice-selective. TI is set to a value at which the signal of the recovering inverted blood is zero (http://www.mr-tip.com/serv1.php?type=db1&dbs=Double%20Inversion).
The second technique (also named gray matter only) is used in brain imaging to improve the detection of lesions, for example in the diagnostic of multiple sclerosis. Two 180° pulses with different TI are used to suppress two different types of tissue simultaneously.
Hope this helps
|
|  View the whole thread | | |
bob smith
Wed. 17 Oct.07,
06:41
[Reply (1 of 2) to:
'does the metaloceramic dental crowns are problem for MRI'
started by: 'Dimitar Todorov'
on Thu. 9 Mar.06]
Category:
Safety
|
| does the metaloceramic dental crowns are problem for MRI |
hey everyone
I had an MRI (1.5 Tesla) and I have a dental crown and bridge, and metal fillings. I think I have the metal bonding porcelain crowns made with Nickel-Chromium, but it doesn’t matter. You will feel nothing. It doesn’t matter if you have titanium, or anything else. The MRI people are more worried about metal in soft tissue which can move around during the scan. Anything on your teeth or bone is fixed and therefore won’t cause problems. And for the patient, who cares about pain / discomfort, there is none, you’ll experience no sensation at all due to dental work.
Hope this helps
|
| | View the whole thread | | |
Ilene Williams
Tue. 14 Aug.07,
18:55
[Reply (6 of 10) to:
'MRI Study Guide'
started by: 'Nicole DeMoss'
on Fri. 10 Mar.06]
Category:
General
|
| MRI Study Guide |
One of your members recommended www.mrireviewstore.com. I ordered a CD from them for $70 and it has nothing on it. I've tried to contact them but have gotten no response. Any suggestions or help on this matter?
Ilene Williams
|
| | View the whole thread | |
| |
| | Result Pages : 1 2 [3] | |
|
| |
 | 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
