GolfHos
 
*
June 02, 2020, 10:52:56 AM
Username: Password: Duration:

hey stroh

 
Pages: [1]   Go Down
  Print  
Author Topic: hey stroh  (Read 1609 times)
0 Members and 1 Lurker/Spider are viewing this topic.
birdymaker
Straitjacket
From: a third world country in the making

Karma: 18
Posts: 2923
Offline Offline


View ProfileIgnore this user
hey stroh
« on: November 22, 2007, 08:22:57 AM »

since we are on the subject, i'm having an mri on my knee next week. the question i have is, how is this possible with all the metal in my leg?
Logged Return to Top

women are like tornados. In the beginning there's a lot of sucking and blowing. In the end, the car's gone, the house is gone..
gleek
Flak Jacket

Karma: 107
Posts: 9484
Offline Offline

E chu ta!

View ProfileIgnore this user
Re: hey stroh
« Reply #1 on: November 22, 2007, 08:29:49 AM »

Mmmmm...leg-kebab.
Logged Return to Top

Woman, open the door, don't let it sting. I wanna breathe that fire again.
stroh
Sleeveless Hoodie
From: Impact Crater Springs, CA

Karma: 155
Posts: 16135
Offline Offline

We're doomed!

View ProfileIgnore this user
Re: hey stroh
« Reply #2 on: November 22, 2007, 08:33:26 AM »

since we are on the subject, i'm having an mri on my knee next week. the question i have is, how is this possible with all the metal in my leg?

Good question.  It is possible, and we do it all the time.
There are many myths, and misconceptions about metal in MRI.  The "medical metal" is always fine.  Stuff like your's, implants, joint replacements, dental work, etc.  Typically that stuff is titanium,(non ferro-magnetic) and while some stuff is stainless steel(ferris) it isn't a problem from a safety stand point.

Contrary to shows like House.  Cussing Pain (I paid for that episode for about a month) The magnet isn't strong enough to pull metal out of a body.

The issue is if the metal is close to the area of anatomy we are attempting to image.  Your metal is plenty far away from your knee.  You pic.s will come out just fine.  Even if we are looking at your ankle, we can still get some useful information, though a lot of the area will be obscured by the metal.  Nothing we can do about it, can't take it out.  Same as dental work.

The big things we worry about are loose non medical metal.  Car keys, can fly through the air.  Office chairs, like dystopia showed, etc.
The next is electronics.  The magnet will kill them.  Cell phones, and of course the biggie....pacemakers.

The last two are the most dangerous.  In a magnetic field, the field itself has the ability to induce electric current.  If that current finds it's way to a "circuit"  i.e.  pacemaker wires, it cna shock the heart into a bad rhythm. Again, bad.
Typically when the current finds a metal object, it is not in a circuit, and thus has resistance.
current+resistance = heat.  very bad.

You however, are good to go.  Good luck.  Cool
Logged Return to Top
birdymaker
Straitjacket
From: a third world country in the making

Karma: 18
Posts: 2923
Offline Offline


View ProfileIgnore this user
Re: hey stroh
« Reply #3 on: November 22, 2007, 08:39:11 AM »

thank you sir. Smiley
Logged Return to Top

women are like tornados. In the beginning there's a lot of sucking and blowing. In the end, the car's gone, the house is gone..
Spanky
Full Metal Jacket

Karma: 48
Posts: 4842
Offline Offline


View ProfileIgnore this user
Re: hey stroh
« Reply #4 on: November 22, 2007, 08:43:25 AM »

Interesting. Basic electrical generation. A conductor, a magnetic field, and reletive motion between the two. So any metal in the body will generate an electric current, for that matter the body itself will. But because the the metal has no resistance there is no heat.

This is a topic I would love to ponder over some other day, my brain doesn't want to work that hard today.
Logged Return to Top
stroh
Sleeveless Hoodie
From: Impact Crater Springs, CA

Karma: 155
Posts: 16135
Offline Offline

We're doomed!

View ProfileIgnore this user
Re: hey stroh
« Reply #5 on: November 22, 2007, 09:01:15 AM »

Interesting. Basic electrical generation. A conductor, a magnetic field, and reletive motion between the two. So any metal in the body will generate an electric current, for that matter the body itself will. But because the the metal has no resistance there is no heat.

This is a topic I would love to ponder over some other day, my brain doesn't want to work that hard today.

Relative to "the field".

And my brain is the same state as yours right now. Tongue
Logged Return to Top
stroh
Sleeveless Hoodie
From: Impact Crater Springs, CA

Karma: 155
Posts: 16135
Offline Offline

We're doomed!

View ProfileIgnore this user
Re: hey stroh
« Reply #6 on: November 22, 2007, 09:03:19 AM »

Coming up on 5SST, Holiday edition.  Wink
Logged Return to Top
gleek
Flak Jacket

Karma: 107
Posts: 9484
Offline Offline

E chu ta!

View ProfileIgnore this user
Re: hey stroh
« Reply #7 on: November 22, 2007, 09:13:08 AM »

http://www.healthsystem.v...h/adult_radiology/mri.cfm

Quote
Due to the use of the strong magnet, MRI cannot be performed on patients with implanted pacemakers, intracranial aneurysm clips, cochlear implants, certain prosthetic devices, implanted drug infusion pumps, neurostimulators, bone-growth stimulators, certain intrauterine contraceptive devices, or any other type of iron-based metal implants. MRI is also contraindicated in the presence of internal metallic objects such as bullets* or shrapnel, as well as surgical clips, pins, plates, screws, metal sutures, or wire mesh.

*You do live in/near the most dangerous city in America after all.  Wink
Logged Return to Top

Woman, open the door, don't let it sting. I wanna breathe that fire again.
stroh
Sleeveless Hoodie
From: Impact Crater Springs, CA

Karma: 155
Posts: 16135
Offline Offline

We're doomed!

View ProfileIgnore this user
Re: hey stroh
« Reply #8 on: November 22, 2007, 09:19:39 AM »

http://www.healthsystem.v...h/adult_radiology/mri.cfm

Quote
Due to the use of the strong magnet, MRI cannot be performed on patients with implanted pacemakers, intracranial aneurysm clips, cochlear implants, certain prosthetic devices, implanted drug infusion pumps, neurostimulators, bone-growth stimulators, certain intrauterine contraceptive devices, or any other type of iron-based metal implants.   Troo Dat!  Very dangerous.
Quote
MRI is also contraindicated in the presence of internal metallic objects such as bullets* or shrapnel, as well as surgical clips, pins, plates, screws, metal sutures, or wire mesh.

 
BS
See: Shellock, Frank MD  et al  MRI saftey


*You do live in/near the most dangerous city in America after all.  Wink  LOL  True.  In reality, we take precautions when dealing with bullets, or shrapnel type fragments, depending on their anatomical location.  We have turned away patients with those objects lying to near critical neurological structures, for fear of heating and injuring those structures.  Bullets near the spinal cord, brain, eyes, etc.

[/quote]
« Last Edit: November 22, 2007, 09:21:44 AM by stroh » Logged Return to Top
Clive
Full Metal Jacket

Karma: 77
Posts: 4358
Offline Offline


View ProfileIgnore this user
Re: hey stroh
« Reply #9 on: November 22, 2007, 03:00:16 PM »

There are many myths, and misconceptions about metal in MRI.  The "medical metal" is always fine.  Stuff like your'syours, implants, joint replacements, dental work, etc.  Typically that stuff is titanium,(non ferro-magnetic) and while some stuff is stainless steel(ferris ferrous) it isn't a problem from a safety stand point.
This correction has been brought to you by the fine folks at Twoiron Speling and Grammer Nahtzees, Lmtd.
Logged Return to Top
Pages: [1]   Return to Top
  Print  
 
Jump to:  

Related Posts
Hey stroh
Hey Stroh, you ever use your MRI to irradiate your golf balls to get more distan
by Dunk

Hey stroh
Hey stroh, you ever use that big ol' MRI to heat up your lunch?  '
by Clive

HumVees are for ********s
Hey Stroh, who did the mini avatar of you.  ;D ;DHey I thought that you wer
by Jules

Hey Jules - as long as Stroh isn't here............
Hey Fuzzy, is this similar to what you are wearing. ;D ;D ;D
by Jules

 


 
  Powered by SMF | SMF © 2001-2009, Lewis Media

Dilber MC Theme by HarzeM