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  • DEXA scans vs QCT bone density scans

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    Old 03-14-2007, 04:39 PM   #1
    Helen C.
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    DEXA scans vs QCT bone density scans

    I had a QCT scan 4 years ago that said my bone density was normal. Then, this past September I had a DEXA scan that said I had significant osteoporosis (-2.9 lumbar spine). Yesterday my doctor told me that QCT scans can show more information and I should get a QCT test again, for comparison. I wonder if any of you guys have had both tests and if so, were the results identical or quite different.

     
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    Old 03-14-2007, 07:19 PM   #2
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    Re: DEXA scans vs QCT bone density scans

    What does QCT stand for? i've never heard of it.

     
    Old 03-15-2007, 09:15 AM   #3
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    Re: DEXA scans vs QCT bone density scans

    I haven't had the QCT but my research in the past turned up the same information - that the QCT produces more reliable information on the condition of the bones.

     
    Old 03-15-2007, 10:28 AM   #4
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    Re: DEXA scans vs QCT bone density scans

    Hi: QCT=Quantitative Computed Tomography. The info I was given about this scan was not good... I've had 2 of these, because at the time of the test my town didn't have a dexa, and my Endo was furious that I had this kind telling me it exposes you to a large amount of radiation. Also my mineral metabolism dr said it over estimates the t score by about 1 standard deviation point. Anyway you can read the link below and decide for yourself, but I won't be having another one of these.

    [url]http://courses.washington.***/bonephys/opbmd.html#WHO[/url]

    Scroll up to the para on QCT and the embedded link.

    Here's another explanation with the pros and cons.

    [url]http://www.ama-cmeonline.com/osteo_mgmt/module02/04reco/15.htm[/url]

    Last edited by DesertBloom; 03-15-2007 at 11:08 AM.

     
    Old 03-15-2007, 07:56 PM   #5
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    Re: DEXA scans vs QCT bone density scans

    DesertBloom, you posted some material a bit back on the iDEXA. What is your opinion of this now?

     
    Old 03-16-2007, 08:02 AM   #6
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    Re: DEXA scans vs QCT bone density scans

    Quote:
    Originally Posted by thyme2b View Post
    DesertBloom, you posted some material a bit back on the iDEXA. What is your opinion of this now?

    Hi thyme: I've always thought that this test would be similar to combining the positive testing results of the dexa and qct. Since the idexa gives you a volumetric/3d reading like the qct without the radiation and the accuracy of the dexa. My problem is I can't find anyone near me that has one. I also like the fact that it can check for fractures, one of my pet peeves, since they are so underdiagnosed. I have no idea what the cost would be, or if insurance companies are readily agreeing to pay for them.

     
    Old 03-16-2007, 09:53 PM   #7
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    Re: DEXA scans vs QCT bone density scans

    Quote:
    Originally Posted by DesertBloom View Post
    Hi thyme: I've always thought that this test would be similar to combining the positive testing results of the dexa and qct. Since the idexa gives you a volumetric/3d reading like the qct without the radiation and the accuracy of the dexa. My problem is I can't find anyone near me that has one. I also like the fact that it can check for fractures, one of my pet peeves, since they are so underdiagnosed. I have no idea what the cost would be, or if insurance companies are readily agreeing to pay for them.
    I plan to bring this up with Dr. Licata (Cleveland Clinic), about how to locate one and if insurance covers it. If I find anything new, I'll let you know.

     
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