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	<title>Comments on: MRI And Metal</title>
	<atom:link href="http://mrimetaldetector.com/blog/2009/03/mri-and-metal/feed/" rel="self" type="application/rss+xml" />
	<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/</link>
	<description>Info on ferromagnetic detection and MRI safety &#38; screening</description>
	<lastBuildDate>Sat, 04 Feb 2012 18:25:20 +0000</lastBuildDate>
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		<title>By: Tobias Gilk</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-74774</link>
		<dc:creator>Tobias Gilk</dc:creator>
		<pubDate>Sat, 04 Feb 2012 18:25:20 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-74774</guid>
		<description>Titanium grommets pose two different problems, depending on whether we&#039;re talking about MRI or CT scans. 

For CT, X-rays (what CT scanners use) won&#039;t penetrate through the grommet, so it may leave an area with less resolution in the &#039;shadow&#039; of the grommet. CT scanners imaging works rotate around the patient, so hopefully this effect will be minimized by the act of &#039;taking the pictures&#039; from a multitude of angles. 

For MRI, any metal will distort the anatomy immediately around it. The good news is that titanium is one of the least-distorting metals, so the disruptive effects may be negligible for your daughter.

In either case, I would recommend sitting down with your radiologist and discussing the pro&#039;s and con&#039;s of each imaging option. Bring whatever information you have about the grommets for the radiologist to help you to make an informed decision about what imaging options would be best.

I hope that this helps.</description>
		<content:encoded><![CDATA[<p>Titanium grommets pose two different problems, depending on whether we&#8217;re talking about MRI or CT scans. </p>
<p>For CT, X-rays (what CT scanners use) won&#8217;t penetrate through the grommet, so it may leave an area with less resolution in the &#8216;shadow&#8217; of the grommet. CT scanners imaging works rotate around the patient, so hopefully this effect will be minimized by the act of &#8216;taking the pictures&#8217; from a multitude of angles. </p>
<p>For MRI, any metal will distort the anatomy immediately around it. The good news is that titanium is one of the least-distorting metals, so the disruptive effects may be negligible for your daughter.</p>
<p>In either case, I would recommend sitting down with your radiologist and discussing the pro&#8217;s and con&#8217;s of each imaging option. Bring whatever information you have about the grommets for the radiologist to help you to make an informed decision about what imaging options would be best.</p>
<p>I hope that this helps.</p>
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		<title>By: Tobias Gilk</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-74772</link>
		<dc:creator>Tobias Gilk</dc:creator>
		<pubDate>Sat, 04 Feb 2012 18:17:43 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-74772</guid>
		<description>Renzo,

There are two issues in play with respect to your spinal prosthesis... one is &#039;would MRI imaging endanger you because of the implant&#039;, and the other is &#039;would MRI images show anything useful near the implant&#039;?

The relative newness of your implant would have me hopeful that it would be &#039;MRI-friendly&#039; and not put you at any risk if you had an MRI, but you should have an implant card (or this information should be in your medical record) that identifies the manufacturer, make, model and serial number of the implant (actually, it&#039;s probably implant&lt;strong&gt;S&lt;/strong&gt;&lt;em&gt;, what with the anchors or screws that were used to affix the plate to your vertebrae). This information will help an MRI provider determine if imaging you would present specific risks.

The other question is whether or not an MRI image around you implant would show anything. Metal distorts (sometimes erases) the image of anatomy right around it on an MRI scan. The amount and type of metal (and the type of MRI scan that they&#039;re running) all influence how much distortion is created. While an MRI might be of no real risk to you, they might not be able to see what they need to for the MRI study, so you might not be a good candidate to participate.

As always, whenever there are questions about the safety of a particular implant for MRI imaging, take everything you know about the implant (or whatever you can get from your doctor / medical record) to the MRI provider and talk with them about the potential risks.

Best to you!</description>
		<content:encoded><![CDATA[<p>Renzo,</p>
<p>There are two issues in play with respect to your spinal prosthesis&#8230; one is &#8216;would MRI imaging endanger you because of the implant&#8217;, and the other is &#8216;would MRI images show anything useful near the implant&#8217;?</p>
<p>The relative newness of your implant would have me hopeful that it would be &#8216;MRI-friendly&#8217; and not put you at any risk if you had an MRI, but you should have an implant card (or this information should be in your medical record) that identifies the manufacturer, make, model and serial number of the implant (actually, it&#8217;s probably implant<strong>S</strong><em>, what with the anchors or screws that were used to affix the plate to your vertebrae). This information will help an MRI provider determine if imaging you would present specific risks.</p>
<p>The other question is whether or not an MRI image around you implant would show anything. Metal distorts (sometimes erases) the image of anatomy right around it on an MRI scan. The amount and type of metal (and the type of MRI scan that they&#8217;re running) all influence how much distortion is created. While an MRI might be of no real risk to you, they might not be able to see what they need to for the MRI study, so you might not be a good candidate to participate.</p>
<p>As always, whenever there are questions about the safety of a particular implant for MRI imaging, take everything you know about the implant (or whatever you can get from your doctor / medical record) to the MRI provider and talk with them about the potential risks.</p>
<p>Best to you!</em></p>
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		<title>By: Tobias Gilk</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-74770</link>
		<dc:creator>Tobias Gilk</dc:creator>
		<pubDate>Sat, 04 Feb 2012 18:07:24 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-74770</guid>
		<description>Most civilian ammunition is lead or, for small game hunting shot, steel. Unless you were shot with military munitions (unlikely if it was a .25 calibre), the bullet was most likely non-magnetic.

Anytime you have had metal inside your body (even if it was removed), it is necessary to have a detailed conversation with the MRI provider&#039;s staff to let them know all of the details about it so that they can work with you to determine whether or not there&#039;s a risk to your health, going forward.

Many times, patients with retained bullets can get MRI scans without undue risk, and I would think that this would be the like case with your scenario... but do talk with the MRI provider to make sure!</description>
		<content:encoded><![CDATA[<p>Most civilian ammunition is lead or, for small game hunting shot, steel. Unless you were shot with military munitions (unlikely if it was a .25 calibre), the bullet was most likely non-magnetic.</p>
<p>Anytime you have had metal inside your body (even if it was removed), it is necessary to have a detailed conversation with the MRI provider&#8217;s staff to let them know all of the details about it so that they can work with you to determine whether or not there&#8217;s a risk to your health, going forward.</p>
<p>Many times, patients with retained bullets can get MRI scans without undue risk, and I would think that this would be the like case with your scenario&#8230; but do talk with the MRI provider to make sure!</p>
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		<title>By: Tobias Gilk</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-74769</link>
		<dc:creator>Tobias Gilk</dc:creator>
		<pubDate>Sat, 04 Feb 2012 18:03:15 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-74769</guid>
		<description>Dawn,

All metal creates some &#039;artifact&#039; in MRI imaging. The more magnetic the metal, the more distortion it causes around the area where it&#039;s located. For MRI imaging this can mean that -- even though it&#039;s not a safety risk for you -- the metal in the implant makes it difficult / impossible to view the anatomy nearby on an MRI scan.

It is also not uncommon for some implants to be subjected to slight magnetic pull during MRI imaging. This can also be experienced as &#039;vibration&#039; which can sometimes feel like either a burn or electric shock, because the sensation is (sometimes) being created in an area that doesn&#039;t have the nerve receptors to correctly characterize the sensation.

Particularly given what you said about the MRI image being useless, this suggests that your implants have a fair amount of magnetic material, so, if that&#039;s the case, it wouldn&#039;t surprise me at all that you felt motion.

I hope this helps.</description>
		<content:encoded><![CDATA[<p>Dawn,</p>
<p>All metal creates some &#8216;artifact&#8217; in MRI imaging. The more magnetic the metal, the more distortion it causes around the area where it&#8217;s located. For MRI imaging this can mean that &#8212; even though it&#8217;s not a safety risk for you &#8212; the metal in the implant makes it difficult / impossible to view the anatomy nearby on an MRI scan.</p>
<p>It is also not uncommon for some implants to be subjected to slight magnetic pull during MRI imaging. This can also be experienced as &#8216;vibration&#8217; which can sometimes feel like either a burn or electric shock, because the sensation is (sometimes) being created in an area that doesn&#8217;t have the nerve receptors to correctly characterize the sensation.</p>
<p>Particularly given what you said about the MRI image being useless, this suggests that your implants have a fair amount of magnetic material, so, if that&#8217;s the case, it wouldn&#8217;t surprise me at all that you felt motion.</p>
<p>I hope this helps.</p>
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		<title>By: Pops's Mum</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-73475</link>
		<dc:creator>Pops's Mum</dc:creator>
		<pubDate>Thu, 26 Jan 2012 09:33:17 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-73475</guid>
		<description>Hi,  my daughter has a mystifying deterioration of her hearing.  With a complicated medical history (including single site - so far - Langerhams) I would like to push for a closer examination of her entire hearing mechanisms to rule out any possible recurrance of past problems.  However she has been fitted with titanium grommets.  Will these rule out effective imaging due to either the metalic nature of thier construction or glare produced from them under imaging which will obscure the very tiny and complex mechanisms of the hearing system?</description>
		<content:encoded><![CDATA[<p>Hi,  my daughter has a mystifying deterioration of her hearing.  With a complicated medical history (including single site &#8211; so far &#8211; Langerhams) I would like to push for a closer examination of her entire hearing mechanisms to rule out any possible recurrance of past problems.  However she has been fitted with titanium grommets.  Will these rule out effective imaging due to either the metalic nature of thier construction or glare produced from them under imaging which will obscure the very tiny and complex mechanisms of the hearing system?</p>
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		<title>By: RENZO</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-73440</link>
		<dc:creator>RENZO</dc:creator>
		<pubDate>Wed, 25 Jan 2012 22:30:48 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-73440</guid>
		<description>Tobias Gilk:
I was not concerned until I found this blog however, this is what I have.
Major motorcycle accident giving me an prothisis device metal plate behind back neck holding something between my discs.???
Sorry,I also have brain injury (Memory) and don&#039;t remember anything more substantial. I am looking to volunteer for Mri study for memory patients.The surgery I believe was only 3-years ago therefore, I don&#039;t think they would put any type metal that would affect an Mri. (UofW) and I am to install several teeth implants in the very near future (2012) Maybe I should hold off.??
Thanks</description>
		<content:encoded><![CDATA[<p>Tobias Gilk:<br />
I was not concerned until I found this blog however, this is what I have.<br />
Major motorcycle accident giving me an prothisis device metal plate behind back neck holding something between my discs.???<br />
Sorry,I also have brain injury (Memory) and don&#8217;t remember anything more substantial. I am looking to volunteer for Mri study for memory patients.The surgery I believe was only 3-years ago therefore, I don&#8217;t think they would put any type metal that would affect an Mri. (UofW) and I am to install several teeth implants in the very near future (2012) Maybe I should hold off.??<br />
Thanks</p>
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		<title>By: Tobias Gilk</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-72506</link>
		<dc:creator>Tobias Gilk</dc:creator>
		<pubDate>Wed, 18 Jan 2012 03:52:43 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-72506</guid>
		<description>If you are concerned, you could ask the MRI center about getting an X-ray of your back... that could show whether those needles are there. I don&#039;t know how a metal needle would &#039;melt&#039; in your back. 

If the needles are only 1 to 2 mm long, that&#039;s pretty tiny. Even if they were raw iron, the most magnetic metal, at such a small size I don&#039;t think that they would experience much attractive force. They might vibrate during an MRI exam, and feel odd (even uncomfortable), but I think that it&#039;s definitely within the realm that a radiologist with the MRI center should (perhaps with the benefit of an X-ray) work with you to make an informed decision about whether or not to proceed with the MRI scan.

I hope this helps.</description>
		<content:encoded><![CDATA[<p>If you are concerned, you could ask the MRI center about getting an X-ray of your back&#8230; that could show whether those needles are there. I don&#8217;t know how a metal needle would &#8216;melt&#8217; in your back. </p>
<p>If the needles are only 1 to 2 mm long, that&#8217;s pretty tiny. Even if they were raw iron, the most magnetic metal, at such a small size I don&#8217;t think that they would experience much attractive force. They might vibrate during an MRI exam, and feel odd (even uncomfortable), but I think that it&#8217;s definitely within the realm that a radiologist with the MRI center should (perhaps with the benefit of an X-ray) work with you to make an informed decision about whether or not to proceed with the MRI scan.</p>
<p>I hope this helps.</p>
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		<title>By: Marie</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-72375</link>
		<dc:creator>Marie</dc:creator>
		<pubDate>Tue, 17 Jan 2012 04:47:51 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-72375</guid>
		<description>Hi, i googled MRI and found here.
I have leg pain and MRI on my back is scheduled. But i had gold needle insertion in my back 10 years ago. I forgot to mention to my doctor. Mri center said gold is ok. But my concern is the gold needle may not be pure gold. It could have been 24k or some mixed gold. The needles were 1-2mm long, 10-20 were inserted, and the acupuncurist said it will melt. But i don&#039;t think that&#039;s the case. I never took X-ray since then, so I don&#039;t they are still in my back. Would the acupuncture needle be affected by mri machine? (are they going to move inside my spines?) If so, should I take CT instead?</description>
		<content:encoded><![CDATA[<p>Hi, i googled MRI and found here.<br />
I have leg pain and MRI on my back is scheduled. But i had gold needle insertion in my back 10 years ago. I forgot to mention to my doctor. Mri center said gold is ok. But my concern is the gold needle may not be pure gold. It could have been 24k or some mixed gold. The needles were 1-2mm long, 10-20 were inserted, and the acupuncurist said it will melt. But i don&#8217;t think that&#8217;s the case. I never took X-ray since then, so I don&#8217;t they are still in my back. Would the acupuncture needle be affected by mri machine? (are they going to move inside my spines?) If so, should I take CT instead?</p>
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		<title>By: Ray Currey</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-60037</link>
		<dc:creator>Ray Currey</dc:creator>
		<pubDate>Wed, 06 Jul 2011 06:46:41 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-60037</guid>
		<description>I have a combination rotator cuff injury (more than one tear). I have no health insurance, so it has taken me 6 months to get this far. I am told an MRI is neccessary to fully diagnose and or operatw on my shoulder. My bicept is retracting now. The problem is, I had a gunshot wound to the head in 1989. It waqs a .25 calibre and it was retrieved from what I am told. Am I safe to have the MRI? I am nearly homeless and haven&#039;t worked in many months. I have to get my arm fixed. Any advice would be appreciated.</description>
		<content:encoded><![CDATA[<p>I have a combination rotator cuff injury (more than one tear). I have no health insurance, so it has taken me 6 months to get this far. I am told an MRI is neccessary to fully diagnose and or operatw on my shoulder. My bicept is retracting now. The problem is, I had a gunshot wound to the head in 1989. It waqs a .25 calibre and it was retrieved from what I am told. Am I safe to have the MRI? I am nearly homeless and haven&#8217;t worked in many months. I have to get my arm fixed. Any advice would be appreciated.</p>
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		<title>By: Dawn</title>
		<link>http://mrimetaldetector.com/blog/2009/03/mri-and-metal/comment-page-1/#comment-58225</link>
		<dc:creator>Dawn</dc:creator>
		<pubDate>Tue, 28 Jun 2011 02:16:02 +0000</pubDate>
		<guid isPermaLink="false">http://mrimetaldetector.com/blog/?p=390#comment-58225</guid>
		<description>2 years ago I had about 60% of my right talus (ankle) replaced with donor bone.  As a result of putting me back together, I have 2 screws going through my talus and a plate with 4 screws on my tibia.  Last week I went back to my Ortho complaining of pain again, he saw 2 &quot;areas of concern&quot; on the x-rays and wanted an MRI.  Before the surgery I was very adament about using the correct type of hardware so that we could use MRI later if needed.  I don&#039;t know what type he used, all he would say is that I would be fine.  I had the scan and the tech stopped it early.  She said that it was a big blob so she had the Radiologist go ahead and take a peep at it.  He said this was a pointless scan due to there being so much metal in there, that hardly anything could be seen.  So, now I am left very confused as to what else we can do to see in there to determine what needs to be done next to fix this anke.  Aside from that, I felt no pain during the scan, but is it possible for the machine to have been pulling a little on the metal inside my leg?  She only scanned for about 15 minutes or so, but on a couple of the longer scans it felt like the pull was getting stronger.  Now, I am a little OCD, so it is perfectly okay if you need to tell me I am crazy.  I won&#039;t take offense.  :)    I&#039;m just curious if I really felt something or if it was all in my head.</description>
		<content:encoded><![CDATA[<p>2 years ago I had about 60% of my right talus (ankle) replaced with donor bone.  As a result of putting me back together, I have 2 screws going through my talus and a plate with 4 screws on my tibia.  Last week I went back to my Ortho complaining of pain again, he saw 2 &#8220;areas of concern&#8221; on the x-rays and wanted an MRI.  Before the surgery I was very adament about using the correct type of hardware so that we could use MRI later if needed.  I don&#8217;t know what type he used, all he would say is that I would be fine.  I had the scan and the tech stopped it early.  She said that it was a big blob so she had the Radiologist go ahead and take a peep at it.  He said this was a pointless scan due to there being so much metal in there, that hardly anything could be seen.  So, now I am left very confused as to what else we can do to see in there to determine what needs to be done next to fix this anke.  Aside from that, I felt no pain during the scan, but is it possible for the machine to have been pulling a little on the metal inside my leg?  She only scanned for about 15 minutes or so, but on a couple of the longer scans it felt like the pull was getting stronger.  Now, I am a little OCD, so it is perfectly okay if you need to tell me I am crazy.  I won&#8217;t take offense.  <img src='http://mrimetaldetector.com/blog/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />     I&#8217;m just curious if I really felt something or if it was all in my head.</p>
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