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| Result: Searchterm 'Sound'
found in 20 messages |
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More Results:  Database (33) News Service (85) Resources (56) |
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Reader Mail
Wed. 29 Oct.14,
20:38
[Start of:
'Vibrant Sound Bridge and MRI'
0 Reply]
 Category:
Devices, Scanner, Machines
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| Vibrant Sound Bridge and MRI |
Hello everyone,
I have a Vibrant Soundbridge implanted on both sides of my skull, which contain a magnet. I use them due to severe hearing impairment.
Now the question is, I was told that MRI was prohibited for patients with a Vibrant Soundbridge.
Could anyone suggest an alternative to this problem please? Is there another equipment allowing me to have the conclusions normally obtained from MRI? My problem is an accident to my spinal cord, which requires further investigation using an MRI.
I would appreciate any help!
Thanks a lot
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Naji Kerio
Tue. 2 Mar.21,
21:17
[Start of:
'Need to check for my middle/inner ear on my MRI'
0 Reply]
Category:
General
|
| Need to check for my middle/inner ear on my MRI |
Hello. I'm new to this forum and I was wondering if I can share MRI images for a professional's opinion here. If not here, I'd like to know whether there is a forum for this. rnrnI have been having serious vertigo issues (intense spinning) for weeks. Although it has improved dramatically and still is in terms of the nausea and the vertigo attacks, I'm still experiencing regular dizziness, and looking sideways and driving is a bit tricky. I suspected it could have something to do with the inner or middle ear, so I had a brain MRI and made sure to ask for analysis of the inner and middle ear and any associated nerves. When I picked up my MRI results today, all that showed as abnormal was the sinuses with cyst in the right sphenoid sinus. To make sure the middle and inner ear were analyzed I asked the desk woman. She didn't know, made some calls and found out they apparently were not analyzed. rnrnI got the CD, retrieved my ancient PC laptop that is turtle slow and tried to check for images. Don' t know what to check for and having difficulty navigating. The images are divided into T1 TSE Ax, T2 FS AX, T2 AX SPACE IA, FLAIR COR, 2 image fors DIFF AX (ANGLE, and mIP images. I'm specifically trying to rule out conditions that sounded a lot like what I'm experiencing: labyrinthitis and vestibular neuritis. Thank you.
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Arnold Buggins
Fri. 21 Dec.18,
11:21
[Start of:
'Deaf in one ear but MRI scan says 'everything's normal''
0 Reply]
Category:
General
|
| Deaf in one ear but MRI scan says 'everything's normal' |
(I'm not a professional user of MRI, just someone who has recently had an MRI scan and is puzzled at the result. I hope it's still OK to post here).rnrnSeveral months ago I received a violent blow to the side of my head, and ever since, I have been totally deaf in the ear on that side. Even worse, instead of hearing anything in that ear, I'm getting a constant really loud whistling sound in that ear. As you can imagine, this is causing me a great amount of distress.rnrnI was given a CT scan which showed nothing, so then I was given an MRI scan, and I recently got the result. To my great surprise (and dismay) the letter i got from the specialist said that the scan showed that 'everything was perfectly normal'. My first reaction was to phone him and ask just how I could be totally deaf in one ear if the scan showed everything was normal, but I live in the UK, and you're not even allowed to approach a specialist directly - you have to get your doctor to do this for you. In view of how overstretched our health service is here, it could be months before I can get any answers.rnrnThis is why I'm posting here. I don't know anything about MRI scanners and all the Internet searches I've done just come up with answers to things like 'are they safe?' and 'how noisy are they?'rnrnSo can anyone tell me how an MRI scan can show there's nothing wrong with me when I'm totally deaf in an ear that had nothing wrong with it before that blow to the head?rnrnAny answers will be very gratefully received.
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Sound Imaging
Wed. 3 Aug.16,
23:00
[Reply (1 of 3) to:
'Need to quench a scanner now'
started by: 'Eduardo Mendes'
on Tue. 19 Jul.16]
Category:
General
|
| Need to quench a scanner now |
I would be able to assist you however you may want to contact me direct...kathy@soundimaging.com
Best Regards,
Kathy Juarez
Tel: 858.771.0619
Fax: 858.368.8556
Email: kathy@soundimaging.com
skype: kathy_soundimaging
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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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