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Medical Forum / General / General / January 2005MRI -- Suggested improvements
They say you shouldn't move but don't define a tolerance level (obviously you move; you're breathing aren't you?). Suggestion: It's the responsibility of the operator to ensure that you CAN'T move (at least the appropriate parts). Strap the patient down. There's this banging... Sheesh...what on earth is that about? Maybe my particular machine had a screw loose? (I think not though.) Whatever it is, get it fixed! There's no reason for noise in what should be a an electronic machine. The less movement the better. That's why pictures of the head or extremities are much better than the chest or abdomen. There are ways to compensate for motion, but they make the scan longer which can lead to discomfort -- and more motion. High-field scan times are shorter than open-mri scan times, so if you're claustrophobic, you might actually be in the open machine longer than you would have been in the closed machine. The banging is part of the normal operation of the machine. The MRI must change the magnetic field very quickly and this causes movement of metal bands. This causes air to vibrate and hence, noise. Usually ear plugs are provided. Some of the newer MRIs are quieter. > They say you shouldn't move but don't define a tolerance level > (obviously you move; you're breathing aren't you?). Suggestion: It's [quoted text clipped - 5 lines] > it is, get it fixed! There's no reason for noise in what should be a > an electronic machine. >The less movement the better. That's why pictures of the head or >extremities are much better than the chest or abdomen. There are ways [quoted text clipped - 3 lines] >actually be in the open machine longer than you would have been in the >closed machine. I gave you the solution: strap the patient down. How do you MRI a child or a person who can't/won't keep still? >The banging is part of the normal operation of the machine. >The MRI must change the magnetic field very quickly and this causes >movement of metal bands. This causes air to vibrate and hence, noise. >Usually ear plugs are provided. Back to engineering school. You just haven't made the silent operation a priority. >Some of the newer MRIs are quieter. See and with just a little more work you might get it right. >> They say you shouldn't move but don't define a tolerance level >> (obviously you move; you're breathing aren't you?). Suggestion: It's >> the responsibility of the operator to ensure that you CAN'T move (at >> least the appropriate parts). Strap the patient down. >> There's this banging... Sheesh...what on earth is that about? Maybe >my >> particular machine had a screw loose? (I think not though.) Whatever >> it is, get it fixed! There's no reason for noise in what should be a >> an electronic machine. >I gave you the solution: strap the patient down. How do you MRI a >child or a person who can't/won't keep still? Sedation or even anesthesia is an option if the MRI is really necessary. >Back to engineering school. You just haven't made the silent operation >a priority. Priority is imaging, that's rather obvious, isn't it? If you can't stand the little discomfort, you have to stay at home. >See and with just a little more work you might get it right. What on earth is your problem. Why the agressive talk? The guys who invented NMR got the Nobel prize for this fantastic technique. If you're really interested in making it less noisy, go to engineering school and fix it. It won't be "just a little work". >>I gave you the solution: strap the patient down. How do you MRI a >>child or a person who can't/won't keep still? >Sedation or even anesthesia is an option if the MRI is really >necessary. And who decides on that? And if it's not really necessary why are you doing it in the first place? >>Back to engineering school. You just haven't made the silent operation >>a priority. >Priority is imaging, that's rather obvious, isn't it? If you can't >stand the little discomfort, you have to stay at home. Is English your first language? Getting the machine to image is obviously its main function but if in doing so (say) it burnt the patient to a crisp, I'd say the makers hadn't made safety a priority. In this case the constructors have taken an attitude like yourself: we don't care; screw the patient. The solution is either massively ramped-up competition such that MRI operators are super hungry and are willing and anxious to "sell" their service to the public (they'll find a way to make it quiet) or simply regulation. >>See and with just a little more work you might get it right. >What on earth is your problem. Why the agressive talk? "Contemptuous" would be a better word. >The guys who invented NMR got the Nobel prize for this fantastic >technique. Which way do I face to worship their god-like brilliance? > If you're really interested in making it less noisy, go >to engineering school and fix it. It won't be "just a little work". Really? Is this the way you treat all your customers? One of them complains so it's, "Tough, fix it yourself!" >>>I gave you the solution: strap the patient down. How do you MRI a >>>child or a person who can't/won't keep still? [quoted text clipped - 4 lines] >And who decides on that? And if it's not really necessary why are you >doing it in the first place? Because it's really funny to put people in small cylinders. Ffor certain pathologies MRI is a useful diagnostic tool , but not absolutely needed. But it can be the first choice, or it could be a second choice (for example, after CT). These decisions are made depending on the analysis of effectiveness (sensitivity+specificity), safety, and efficiency (cost-effectiveness) of the diagnostic means. For example, MRI is rather expensive, so you shouldn't use it for common fractures because RX is much cheaper, however, safety is better for MRI then for RX. People at risk for contrast allergy won't get a CT-angiography, but rather an MR-angiography, the latter is more expensive, but safer for this patiënt. For certain tumours MR is much better for detection than CT. Et cetera. >>>Back to engineering school. You just haven't made the silent operation >>>a priority. [quoted text clipped - 3 lines] > >Is English your first language? No, i'm terribly sorry. But I try to make it look like my first language :) >Getting the machine to image is >obviously its main function but if in doing so (say) it burnt the >patient to a crisp, I'd say the makers hadn't made safety a priority. >In this case the constructors have taken an attitude like yourself: we >don't care; screw the patient. Nonsense. Find some arguments before you make such statements. And what's wrong with the noise? This is just discomfort, nothing more. >>What on earth is your problem. Why the agressive talk? > >"Contemptuous" would be a better word. OK. Why the contemptuous talk? >>The guys who invented NMR got the Nobel prize for this fantastic >>technique. [quoted text clipped - 3 lines] >> If you're really interested in making it less noisy, go >>to engineering school and fix it. It won't be "just a little work". >Really? Is this the way you treat all your customers? One of them >complains so it's, "Tough, fix it yourself!" I have no customers, nor am i an NMRconstructor or operator. But I wouldn't say that to them, I only say this to you, because you are making a lot of statements without any arguments or nuances or respect, but merely looking for sensation. Greetings P. |
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