Home

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
home:tests:imaging [10.25.2016] – [Imaging tests including MRI, CT scan, and X-rays] sallieqhome:tests:imaging [09.14.2022] (current) – external edit 127.0.0.1
Line 1: Line 1:
-<note>Dear MPKB Reader: You have arrived at one of the articles that has not yet completed the development and review process in the knowledge base. Some of the content here may be helpful, but please know that this page is not complete. There are about 400 articles in the KB, and this is one we are still working on. Thanks for your patience.</note>+
  
 ====== Imaging tests including MRI, CT scan, and X-rays ====== ====== Imaging tests including MRI, CT scan, and X-rays ======
    
  
-Magnetic resonance imaging (MRI) is a test that produces very clear pictures, or images, of the human body without the use of x-rays. MRI uses a large magnet, radio waves and a computer to produce these images as [[http://my.clevelandclinic.org/services/magnetic_resonance_imaging_mri/hic_magnetic_resonance_imaging_mri.aspx|described here]].+Magnetic resonance imaging (MRI) is a test that produces very clear pictures, or images, of the human body without the use of x-rays. MRI uses a large magnet, radio waves and a computer to produce these images as [[https://my.clevelandclinic.org/services/magnetic_resonance_imaging_mri/hic_magnetic_resonance_imaging_mri.aspx|described here]].
  
 64-slice CT scanner. Beta blockers are usually given in conjunction with this type of scan, and an IV contrast material is used. Evidently the contrast dose is lower but the radiation exposure is higher, compared to the older 16-slice CT scans.  64-slice CT scanner. Beta blockers are usually given in conjunction with this type of scan, and an IV contrast material is used. Evidently the contrast dose is lower but the radiation exposure is higher, compared to the older 16-slice CT scans. 
Line 12: Line 12:
 Xrays are very subjective in interpretation. It is best to get the original radiographer's reports (usually available from the lab who took the Xray films) Xrays are very subjective in interpretation. It is best to get the original radiographer's reports (usually available from the lab who took the Xray films)
  
-[[http://xkcd.com/radiation/]]+[[https://xkcd.com/radiation/]]
  
 Risk is not only from radiation exposure, but may arise from dyes used, depending on individual sensitivity, so it is prudent to ask what contrast agents are in use for the proposed scan. Risk is not only from radiation exposure, but may arise from dyes used, depending on individual sensitivity, so it is prudent to ask what contrast agents are in use for the proposed scan.
Line 18: Line 18:
  
  
-{{tag>incomplete}}+{{tag>incomplete tests}}
  
 +<note>Dear MPKB Reader: You have arrived at one of the articles that has not yet completed the development and review process in the knowledge base. Some of the content here may be helpful, but please know that this page is not complete. There are about 400 articles in the KB, and this is one we are still working on. Thanks for your patience.</note>
 +
 +<nodisp>
 ===== Notes and comments ===== ===== Notes and comments =====
 TECH TECH
Line 49: Line 52:
  
 If you are having an MRI with contrast they will be using an I.V. form of the element gadolinium, that is usually largely eliminated with no problem in most people. There may be a problem in those with kidney problems, and the FDA has issued a black box warning recently about this. It mostly involve MRA's, but could be relevant to MRI's. See:  If you are having an MRI with contrast they will be using an I.V. form of the element gadolinium, that is usually largely eliminated with no problem in most people. There may be a problem in those with kidney problems, and the FDA has issued a black box warning recently about this. It mostly involve MRA's, but could be relevant to MRI's. See: 
-http://kidneydiseases.about.com/b/a/007094.htm +https://kidneydiseases.about.com/b/a/007094.htm 
  
 The gadolinium would be fine for most people on the MP, but everyone should be aware of the black box warning. In those with kidney involvement I would always see if an MRI without contrast would be good enough to visualize what needs to be examined.  The gadolinium would be fine for most people on the MP, but everyone should be aware of the black box warning. In those with kidney involvement I would always see if an MRI without contrast would be good enough to visualize what needs to be examined. 
Line 84: Line 87:
  
 This is a horrible source, but it might be worth following up on these studies: This is a horrible source, but it might be worth following up on these studies:
-http://www.cracked.com/article_18840_5-common-medical-procedures-that-secretly-arent-worth-it_p1.html+https://www.cracked.com/article_18840_5-common-medical-procedures-that-secretly-arent-worth-it_p1.html
  
  
Line 95: Line 98:
 The New England Journal of Medicine (Nov.29, 2007) reported the average American's radiation exposure has doubled since 1980, largely because of the booming use of CT scans. A patient undergoing an abdominal CT scan receives over 50 times more radiation than in a standard X-ray. A person who receives two scans is bathed in as much radiation as if he stood two miles from ground zero at Hiroshima. The New England Journal of Medicine (Nov.29, 2007) reported the average American's radiation exposure has doubled since 1980, largely because of the booming use of CT scans. A patient undergoing an abdominal CT scan receives over 50 times more radiation than in a standard X-ray. A person who receives two scans is bathed in as much radiation as if he stood two miles from ground zero at Hiroshima.
  
-For a more readable synopsis and comment, see [[http://www.msnbc.msn.com/id/22010076/\Msnbc]]+For a more readable synopsis and comment, see [[https://www.msnbc.msn.com/id/22010076/\Msnbc]]
  
 Part of the research report says: Part of the research report says:
Line 120: Line 123:
  
 ===== References ===== ===== References =====
-    * +    * </nodisp> 
home/tests/imaging.txt · Last modified: 09.14.2022 by 127.0.0.1
© 2015, Autoimmunity Research Foundation. All Rights Reserved.