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Current Postings on This Page (23):
• To Ray Z in Santa Monica -- My MRI was needed to diagnose an herniated
disc. I discussed the pains with my neurosurgeon. he said these pains sometimes
occur because of the brace used during the MRI. It can cause irritation of the
nerves leading to the left side of the chest. Bottom line..no further pain in
chest;
neck is repaired.
Bruce, Houston, Texas, USA, May 6, 2008
• To Bruce in Houston
TX - I have had 16 Coronary
Stents inserted and a month later (after the 16th) a Cervical and Thoracic
MRI - No problem. I need to ask. Was the Cervical MRI needed for an injury?
Could the injury have also been in the thoracic area causing you discomfort?
Perhaps you should look into
this.
RayZ, San Marcos, California, USA, April 3, 2008
• Chandra -- if you look at the posts below from
April 2005, you'll see that the U.S. FDA approved both Boston
Scientific's
Taxus and J&J's
Cypher for immediate MRI. Best wishes.
Forum Editor, Angioplasty.Org, April 1, 2008
• Dear Sir I am awaiting permission from someone as to whether or not I
am a candidate for MRI. In Oct 2006 I had two Johnson& Johnson Cypher 2 stents
implanted. Now I am suffering from Tongue Carcinoma and advised MRI. Am I able
to have the MRI? Please advice urgently.
R Chandra, India, March 31, 2008
• Bruce -- your story is very interesting.
We know that the FDA cleared MRI for stents, but we're not sure if they tested
for situations where there were 7 stents. You're the first person to
write in with this problem to our Forum. You should share your experience
with
the FDA and please let us know
how you are faring..
Forum Editor, Angioplasty.Org, March 15, 2008
• Since 03/2006 I have had 7 stents placed (3 to
resolve a failed bypass). Last stent was 2/21/2008. On 03/12/2008 I underwent
an MRI of the cervical spine. The test was very uncomfortable and I was
unable to focus when leaving the facility. I experienced significant
chest pain centralized under the sternum most of the evening and was unable
to
sleep that night due to nightmares (which I never have). Today, 03/13/2008,
I have not completely recovered. I will do my best to avoid an MRI in
the future, no matter what the FDA says.
Bruce, Houston, Texas, USA, March 13, 2008
• Angela -- read the posts below. The FDA has cleared
both Cypher and Taxus drug-eluting stents for immediate MRI.
Forum Editor, Angioplasty.Org, January 5, 2008
• CAN MY HUSBAND HAVE A MRI WITH TAXUS EXPRESS
2. PLEASE GET BACK WITH ME.
Angela M., Alabama, USA, December 29, 2007
• Due to a long term ongoing knee problem- osteoarthritis,
I'm to understand that my doctor may be considering an MRI for this issue.
However I do have two Multi-Link Vision Cobalt Chromium Coronary Stents
in my right coronary artery. I'm to understand that this may represent
a significant problem with doing an MRI... Is there a specific reason
why?
Nita, Wichita, Kansas, USA, March 19, 2007
• Thank you for your very fast reply to me regarding
my enquiry about having an MRI with two stents from June 2000. The MRI
went well and no problems occured. Thank you.
Murray Berman B.Sc. Phm., Pharmacist, Toronto Ontario Canada,
April 24, 2006
• Murray -- the two drug-eluting stents available
in the U.S. were both approved for immedate MRI imaging last April. The
Tristar is a bare metal stent made by Guidant. The IFU
(Instructions For Use) from Guidant states "Do not perform a magnetic
resonance imaging (MRI) scan on patients post-stent implantation until
the stent has completely endothelialized (eight weeks) to minimize the
potential for migration. The stent may cause artifacts in MRI scans due
to distortion of the magnetic field." Hope this helps. Please let
us know how things work out.
Forum Editor, Angioplasty.Org, March 20, 2006
• I awaiting permission from someone as to whether
or not I am a candidate for MRI. In June 2000 I had two Tristar stents
implanted. Dec 31 2005 I fell on my left shoulder and have a full tear
of of a tendon the Supraspatina. Am I able to have the MRI? My orthopedic
surgeon is delaying surgery until he is told it is OK. I am assuming that
in 2000 the stent was stainless steel ? Correct ? Thanks
Murray Berman B.Sc. Phm., Pharmacist, Toronto Ontario Canada,
March 20, 2006
• In Aug. 2004 I had 2 coronary stents placed: ACS
multi-linkpixel(13mm)and a Taxus Express2(20mm). During a cervical MRI
on 10-28-05 I felt heat and vibration in the sternum and just left of the
sternum in my chest about ten minutes into a proposed 30 minute MRI. It
was an "open MRI". I stopped the test. Anyone have an explanation for this?
Anyone have a similar experience? Would a "closed MRI" using less magnetism
get me through this test? Any responses are greatly appreciated.
John Colarusso, patient, Bronx, NY USA, October 28, 2005
• Ashok -- the reason MRI scans were avoided in
stent patients for several months after stent placement was to give the
endothelium (inner lining of the artery) a chance to cover and anchor the
stent -- there was concern that the strong magnetic field would dislodge
the metallic stent. Now tests have been run (see postings below) that have
shown this does not occur and the FDA now says it's okay to do an MRI immediate
post-stenting. Your hypothesis is, however, theoretically interesting --
that the iron in red blood cells is attracted to a magnetized stent. I
don't think the magnetism remains in the metal stent after an MRI, nor
would it be strong enough to cause red cells to congregate -- of course,
it would also be interesting to look at the data from stent patients who
have had MRI scans and see if the restenosis rate is abnormal.
Forum Editor, Angioplasty.Org, September 30, 2005
• I had an angioplasty done at Apollo Hospital
Chennai, India in December 1998 and then the doctors advised me to refrain
from high magnetic field like mri scan for the first 6 months after angioplasty.
In 2003 i had an MRI done and the doctors said it was ok. Being a physics
student its scientific as the metal stent would be magnetised and then
would attract cells therefore enhancing the chances of restenosis. All
the best
Ashok Punjabi, ONGC, Delhi, India, August 25, 2005
• UPDATE2: Today the FDA approved
the CYPHER stent from Johnson & Johnson / Cordis for immediate
MRI as well. So now both the drug-eluting stents have been okayed for
immediate MRI imaging!
Forum Editor, Angioplasty.Org, April 20, 2005
• UPDATE: Just a few days ago, the FDA approved
Boston Scientific's TAXUS stent for MRI-compatibility. This means that
MRIs can be done immediately after stent placement. The company was able
to demonstrate that no ill effects are caused by MRI. This has something
to do with the stent designs, but also to the fact that newer generation
MRI scanning uses lower fields of power than the older machines, thus
the effect on metallic stents is nil. You can read the company's press
release here.
Other stents may possibly be safe as well, but the TAXUS is the only
one currently approved by the FDA.
Forum Editor, Angioplasty.Org, USA, April 09, 2005
• Is there a length of time one should wait
after a coronary artery stent is put in before allowing a patient to
have an MRI study, or can MRI be done safely immediately or a couple
of weeks after stent placement? Keith T. Chesser, M.D. UAB Medical West
Dep. of Radiology Birmingham, AL
Keith Chesser, M.D., UAB Medical West Radiology, Birmingham,
Alabama, USA, M.D. on Thursday, February 17, 2005
• My husband had a drug eluting stent placed
in his aorta July 2004. He needs to have a MRI for a shoulder problem.
Will the MRI have any effect on the stent or the dosage of the drug due
to the heat?
Pat Tenvold, Redwood City, CA 94062, October 16, 2004
• I am 48 year old female who underwent MRI and
MRA April 19,1999. I had stainless steel implant done in December of 1999.
I was frightened about having this done because I am not familiar with
the strength of the magnetism of the MRI. I kept repeating to those doing
the test that I had this implant and they didnt seem concerned.
Patricia C., Daytona Beach, Florida, USA, 26 Apr 2000
• As a magnetician, engineer and physicist, I can understand the question
relating to so-called non-magnetic stainless but I assure you your concerns may
be unfounded. Your question assumes that the force on the stent caused by huge
MRI magnetic field will move the stent against the surrounding tissue. Since
the stent is embedded in soft tissues I cannot see any such relative motion effects
coming into place. All tissue in question will "tug together" if at all. The
strain will occur well away from the stainless/artery boundary, if at all. Also
since the mass of the stent is so small, any resulting forces will be small as
well.
Matthew Dugas, Advanced Research Corporation, Minnesota, USA, November
22, 1998
• As an engineer who has received a Palmaz-Schatz
stent over two years ago, I am very interested in the answer to this question
also. My guess is that a hi-energy magnetic field may cause migration of
even the so called "non-magnetic" stainless steel stents, possibly causing
fracturing of plaque and or separation of arterial tissue.
Michael Izzi, patient & engineer, Long Island, New York, USA,
May 16, 1998
• Has anyone ever seen or heard of a problem in
any patient who has undergone an MR exam following recent stent placement,
i.e., within 24 to 48 hours?
Jerry Breen, MD, Dept. of Radiology, Mayo Clinic, Rochester, Minnesota,
USA, February 6, 1998
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