CT vs. MRI for Aortic Root

[masterji]

Hi All,

I had a CT done for my aortic root the first time I was diagnosed with AVR. It was mildly dilated. Now, that it has been an year, I am scheduled for another CT . Is there a reason why doctors want to look at CTs as opposed to MRI. I was just wondering because there is so much radiation involved.

Thanks,
Masterji

 

[MikeHeim]

From what I understand, both would work to get accurate measurements. MRI's are significantly more expensive to both the hospital and patient, however.

 

[dot4toto]

Hi...

The way I understand it, they can get a better picture with the CT scan.
Thats what I was told. I've had so many emergency MRI's because I have a reaction to CTscan contrast and I first have to be worked up with meds for 2 days...But the doctor's first choice was always a CT scan. That's just my experience....Someone more in the know will post for you and explain why they do what test when..

 

[RobThatsMe]

Hi Masterji,

Just a consideration to be aware of.

The measurement results between the MRI and a CT will differ slightly.

I know this from first hand experience. My initial scans of my aortic dissection after my surgery were done via CT, then, for my 1st follow-up, they requested an MRI. The results differed, and to be sure, they sent me for a CT. The results of the CT were identical to my initial CT - post surgery.
EVer since then, I always get an annual CT.

I would recommend that, whatever test you decide is right for you, as you continue to be checked for follow-ups, be sure they use the same test type so that your comparisons will be accurate.

Rob

 

[BackDoc]

CT in this instance is the test of choice. CT scans are much quicker and provide for reducing as much body movement as possible. You are asked to take a breath and hold it--this stops extra body movement allowing a better image of the valve as well as the aortic root.

MRI is also a good diagnostic procedure, but for the reason above CT is superior for cardiac scanning.