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| Result: Searchterm 'MRI'
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Kathy Dumont
Tue. 15 Jan.08,
18:40
[Reply (4 of 6) to:
'Protection against magnetic exposure'
started by: 'Kathy Dumont'
on Sat. 5 Jan.08]
 Category:
Safety
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| Protection against magnetic exposure |
Thank you very much for your answer, Michael.
No, in France the doctors often forget to take care of the quantity of Gado we inject... and I think the problems of NSF are not very well known in France... There are not many studies which tell that the patients have fibrosis after Gado injection. The doctors who work in the department where the patients are hospitalized don’t know the effects of Gado injection in the nephropathy disease. So, it’s very difficult to know if there are NSF after Gado…
There are still many doctors who don’t know that metallic things are so much attracted… We have to take care when a doctor (not a radiologist, luckily) get into a MRI room. So, you can easily understand that NSF are unknown! ;-)
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|  View the whole thread | | |
Kathy Dumont
Sun. 6 Jan.08,
20:31
[Reply (2 of 6) to:
'Protection against magnetic exposure'
started by: 'Kathy Dumont'
on Sat. 5 Jan.08]
Category:
Safety
|
| Protection against magnetic exposure |
Thank you very much Reader, for you answer very quickly! Sorry, I didn’t express myself very well. No, I don’t want to know about the “Gauss lines” (it’s how we say in France).
In the site of the World Health Organization, they talk about “The International EMF Project”.
I’m searching for informations about the effets of the magnetic fields on the human health. And the laws, if they exist in USA?
In France, there are no limits or laws which say the limits (time limits, job in high fields…) when you work at mri.
We just tell the pregnant not to go in the mri room. That’s all. I think you’re getting ahead France in this domain. For me, mri technology is like radiology’s first times, when Marie Curie discovered that tumor increased while X Ray exposure increased. You know?
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Reader Mail
Sat. 5 Jan.08,
21:38
[Reply (1 of 6) to:
'Protection against magnetic exposure'
started by: 'Kathy Dumont'
on Sat. 5 Jan.08]
Category:
Safety
|
| Protection against magnetic exposure |
Hi,
I'm not really sure which information you need.
Here are some links which may help you:
http://www.fda.gov/cdrh/ode/guidance/793.pdf
or try to search the FDA website by yourself
http://www.fda.gov/search.html
or try to search Health Canada (also in french):
http://www.hc-sc.gc.ca/index_e.html
search for "specific absorption rate", "MRI guidelines"
Hope this helps
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| | View the whole thread | | |
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
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| 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
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Fritz y
Wed. 5 Dec.07,
13:04
[Start of:
'How to measure air volume in part of the trachea or the nose!'
0 Reply]
Category:
Sequences and Imaging Parameters
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| How to measure air volume in part of the trachea or the nose! |
Hi
I´m trying measure air volume in 3D and 2D space on a MRI scan.
What program is good to performe this measurement?
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