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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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Steven Ford
Fri. 26 Oct.18, 02:29
[Reply (1 of 2) to: 'When to shim?' started by: 'Matt H' on Fri. 27 Oct.17]
Category:
General |
When to shim? |
you ask a complex question. Any sequence that is not a standard spin echo can benefit from shimming, but its not always worth it.
If you are scanning a knee in the center of the magnet, or nearly so, you might not see much difference in gradient echo scans, which in general are quite sensitive to shim problems. But if you are doing fat-water separation or fatsat images, you will see a difference even in this example.
Because hardware varies, its hard to say in one blanket statement for every case. For sure, do it on fatsat or fat-water imaging. The next most sensitive studies are off-center imaging such as shoulders. Beyond that, you should experiment a little. Of course, erring on the side of caution is a good idea.
Steven Ford
Professional Imaging Services, Inc.
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Steven Ford
Fri. 26 Oct.18, 02:22
[Reply (1 of 2) to: 'Is It Illegal?' started by: 'JD mittler' on Wed. 17 Jan.18]
Category:
General |
Is It Illegal? |
You did not mention your state, and this would be covered by state law, not federal. I am not a lawyer but we sell and service MRIs all over the country. Almost certainly this is not illegal, however it is almost certainly in violation of your hospital's accreditation standards, and your hospital's insurance company would also be alarmed at this. Free advice--get a different job, this is a remarkably bad idea. Find an employer who believes in using qualified people to do their jobs.
Steven Ford
Professional Imaging Services, Inc.
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Steven Ford
Fri. 26 Oct.18, 02:19
[Reply (2 of 3) to: 'Damage from quench' started by: 'Dan Russell' on Fri. 9 Feb.18]
Category:
Equipment |
Damage from quench |
All things are possible but this would be hard to imagine. More likely the coldhead-compressor failed and that led to the quench.
Steven Ford
Professional Imaging Services, Inc.
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Milica Dragicevic
Wed. 15 Aug.18, 10:09
[Start of: 'Spacer' 0 Reply]
Category:
General |
Spacer |
Hi,
I am Milica, an English-Serbian translator and I am currently translating an operator manual for MRI device.
I was wondering if you could help me and explain to me a term related to the in-bore camera calibration for this device.
The sentence I am having trouble with is: Measurement position 1: with 5 spacers. More specifically, could you explain to me the term "spacer" in this context.
Thank you very much for all your help.
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