How accurate is a CT Coronary Angiogram in detecting Coronary Artery Disease?

Dr. Kanigan-Igham, how accurate is a CT coronary angiogram in predicting narrowing of the heart arteries? That's a great question. So the sensitivity of CT coronary angiograms is around 99%. So there's pretty much nothing that's as good as a CT coronary angiogram in terms of looking for disease in the heart arteries. Even compared to traditional angiography where essentially you're just looking at the outside, the the outline of the artery with a dye, CT is looking at the whole artery from outside to inside and can identify smaller bits of plaque than a normal traditional angiogram can't do. So the sensitivity is fantastic. The very slight reason why it falls down is because sometimes it can over-cool things slightly because if you've got lots of calcium in the arteries, then it can make it seem slightly worse than it is, but actually you'd much rather have a test that picked up more things that you can later clarify as not being present, rather than a test that shows that everything's okay, when in reality it's not. So, CT Corneal Engineering is a fantastic tool, and that's why they're so widely adopted in UK practice at the moment.