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| Result: Searchterm 'AIN'
found in 209 messages |
| Result Pages: 1 2 3 4 5 6 7 8 9 [10] 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 |
More Results:  Database (389) News Service (888) Resources (128) |
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James Shingola
Fri. 15 Jul.16,
19:22
[Start of:
'What does this mri report mean'
0 Reply]
 Category:
General
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| What does this mri report mean |
Small developing vertical cleft along the radial side of the membranous TFC disc fibers, best seen on image 11 series 5. There is no evidence of contrast transit into the distal radioulnar joint. The remainder of the TFC disc is intact and grossly unremarkable.
Intact intrinsic ligaments. There is no widening of the intervals. There is no contrast in the midcarpal compartment.
Increased interstitial signal within the ECU tendon is likely due to tendinopathy and a developing longitudinal split. The remaining tendons are grossly unremarkable.
Normal caliber median and ulnar nerves.
Minimal generalized wrist osteoarthrosis with minimal to mild chondromalacia, small intraosseous cysts and minimal osteophytosis.
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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
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| 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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reed curt
Wed. 29 Jun.16,
03:38
[Reply (2 of 3) to:
'shoulder mri pathology'
started by: 'reed fobes'
on Wed. 29 Jun.16]
Category:
Applications and Examinations
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| shoulder mri pathology |
patient lifts weights, only posterior aspect soreness and mild pain, no decreased rom, dull ache posterior aspect, one day old injury, 20 year old patient
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Rahul Manay
Mon. 27 Jun.16,
20:35
[Start of:
'Fractional Anisotropy'
0 Reply]
Category:
General
|
| Fractional Anisotropy |
Hi,
I have been trying to mathematically derive the formula to find FRACTIONAL ANISOTROPYrn(Fractional anisotropy is a method that is used to emphasize and evaluate white matter fiber tracts)
The formula that is given in many textbooks and published paper
FA= Squareroot(3/2) * (Sqaureroot[ (lambda1-lambda)^2 + (lambda2-lambda)^2 + (lambda3-lambda)^2]/ Sqaureroot( Lambda1^2+Lambda2^2+Lambda3^2))
I understand the purpose of Lambda but unable to understand the need for SQUAREROOT (3/2)rnrnPlease do kindly explain the reason behind having SQUAREROOT(3/2) for the Fractional Anisotropy formula
-Rahul Manay
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Jason Mondoro
Mon. 20 Jun.16,
20:41
[Start of:
'What am I looking at?'
0 Reply]
Category:
General
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| 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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