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Michael Cunningham
Fri. 20 Jan.17,
21:18
[Start of:
'Why reset relative SNR value on GE Optima?'
0 Reply]
 Category:
Sequences and Imaging Parameters
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| Why reset relative SNR value on GE Optima? |
Hello, if anyone works on a GE Optima, or any other MRI that has a relative SNR reset button during scan, please explain to me the purpose of this button. I see that it brings the relative SNR back up to 100 percent, but it can't actually be improving the image quality, can it? I just don't understand what the button is actually doing. The manual states that pressing the button brings the value to 100. Clearly. But what is actually happening other than making me feel better about my scan. Thanks.
mjcunningham RT (R) (MR)
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tracie smith
Thu. 8 Dec.16,
16:11
[Reply (20 of 21) to:
'MRI registry equations'
started by: 'Donna Nusser'
on Tue. 18 Aug.09]
Category:
Basics and Physics
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| MRI registry equations |
Hi i saw your post to this forum and i am studying for the MRI registry as well. I have taken it twice and scored a 74 last time. This is my final attempt and i saw threads with people sharing info and study guides. I wasn't sure how to post to the main forum but if you could repost this to the main forum that would be appreciated so much. if anyone can email any information or study test etc. I am so nervous being my third attempt and ive been out of school so long lol My job is on the line if I dont pass. Ive been studying MRI in Practice hopefully that will help but I just wanted to leave my email address traciem218@gmail.com if anyone has any study hints ect. please send them Im in desperate need to pass this. I hope yours went well if you've taken it yet. Thanks in advance for any infornTraciern
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Mitchell Sapp
Fri. 15 Jul.16,
15:05
[Start of:
'Crash cart requirements for contrast'
0 Reply]
Category:
General
|
| Crash cart requirements for contrast |
We are an outpatient surgical center with an MRI department and on-site physicians and we frequently have contrasted exams. What are the MRI department-specific requirements for the crash cart? We currently have a fully loaded crash cart that is honestly stocked with a lot of medications we would never administer even during a reaction. So in an effort to cut restocking costs, what are we REQUIRED to have on hand? And which organization would govern that? (The ACR white paper on MRI safety doesn't seem to cover this topic.)
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Clifford Thornton
Thu. 30 Jun.16,
17:48
[Start of:
'Max. SAR per second - Whole Body (Normal, 1st Controlled, 2nd Control)'
0 Reply]
Category:
Safety
|
| Max. SAR per second - Whole Body (Normal, 1st Controlled, 2nd Control) |
Hello fellow imaging technologists & professionals!
I'm involved in the development of a new type of cardiovascular medical device.
This device employs MRI technology/scans to power, guide, and control the medical devices and their active elements.
I conducted some research into the following question, "How much x-ray energy is allowed within a human every sec from a MRI machine?"
With regards to SAR rates, I understand that these are the upper-limits for the various settings for a full-body scan:
Normal setting: Whole body SAR - 2
1st Level Controlled: Whole body SAR - 4
2nd Level Controlled: Whole body SAR - >4
Would you agree with these calculations that I performed, and if not, why? And what would be a better way to calculate this?
For WHOLE BODY SAR:
-SO IF IN NORMAL MODE FOR MRI, THE MAX. ALLOWABLE SAR IS "2" OVER A 6 MIN. PERIOD, THEN
-6 MIN. = 360 SECONDS
-2 / 360 = 0.00555
FOR 1ST LEVEL CONTROLLED:
-SO IF IN 1ST LEVEL CONTROLLED FOR MRI, THE MAX. ALLOWABLE SAR IS "4" OVER A 6 MIN. PERIOD, THEN
-6 MIN. = 360 SECONDS
-4/ 360 = 0.01111
Other questions -- What is the difference between normal setting, 1st conrolled and 2nd controlled?
What is the clinical purpose of these various settings?
Any insights that you would be willing to share in regards to the above would be greatly appreciated!
I was trained and registred as a diagnostic echocardiographer, specializing in cardiovascular ultrasound, therefore I need help with MRI information/specifications. I am now focusing on the medical device field, but this technology/device happens to be highly dependent on MRI technology.
Any help from the group would be greatly appreciated!!
Thanks & regards,
Clifford Thornton
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Jason Mondoro
Mon. 20 Jun.16,
20:41
[Start of:
'What am I looking at?'
0 Reply]
Category:
General
|
| What am I looking at? |
My wife has had severe back pain for months and the insurance finally allowed us to get an MRI. Can anyone tell me what we are looking at here? and maybe a guess at a diagnosis? Our doctor is on vacation and we won't have an answer for about another week. http://imgur.com/a/spxfp Thank you in advance!
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