I had a 2 D Echo W/Dopper in May '13 --which showed my aorta root was Normal and measured 3.4 cm.

Then I had a CT-Scan on Pul. Veins with a nitro pill--Aug.'13 before a heart ablation- showing Aortic Root was 4.0 cm. and borderline aortic aneursym.
Not sure how aortic root could be normal 3 months earlier and then 3 months later not ??
Also wondered if the nitro pill, making veins enlarged, would of had anything to do with the dilation of the aortic root....??