Sunday, December 12, 2010

Using MRI’s with an optimized protocol to detect metal debris by Hollis Potter MD

Great web cast –made for Surgeons-which I found to be very informative but it is very technical.

 Normally, you will be asked to get an x-ray, an ultra sound and blood test to detect metal debris associated with the implant.  Dr Potter proposes 3 observations surrounding MRIs that are optimized using medical artifact reduction sequencing:
·         MRIs can be used to assist in evaluating tissue surrounding the joint replacement with special sequencing.
o   She said that MRIs can detect synovial response before it proceeds to bone loss.
·         MRIs are more sensitive than x-rays with the right protocol.
·         MRIs are the most accurate way to detect bone loss following an implant

I will be asking my Surgeon why I would postpone getting an MRI protocol run even if the blood level of metal is not high (this is used to indicate further testing which might include an MRI.)  My last CTs showed that I have progressing osteolysus involving the anterior medial acetabulum.  Fluid collection was noted last year in the left bursa which has resolved for now. Last year, that accumulation of fluid was attributed to the metal debris.  This CT scan was NOT done to detect problems with the implant.  I was following up on another medical issue and this was all noted by the radiologist because he couldn't see the pelvis very well due to the "streak artifact" in the x-ray from the metal debris.


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