I have a CT angiogram scheduled for Thursday, and was wonder...

I have a CT angiogram scheduled for Thursday, and was wondering if anyone could let me know what was involved exactly and what to expect.

Here's a good idea of what to expect for the test ... http://www.vascularweb.org/patients/NorthPoint/ CT_Scan.html

Here's an example of the result of CT angiography ...
http://www.ct-angiogram.com/

The pictures near the bottom of the page show a CT angiogram compared with a more traditional angiogram.

You've probably seen a typical CT machine on television, but in case you haven't here's a site with a couple pictures ...
http://www.radiologyinfo.org/en/info.cfm?PG=angioct