The sievert unit, in the context of CT scans, does not correspond to the actual radiation dose that the scanned body part absorbs but to another radiation dose of another scenario, the whole body absorbing the other radiation dose and the other radiation dose being of a magnitude, estimated to have the same probability to induce cancer as the CT scan.
1 Sign into YouTube. 2  Click the Upload button at the top of the page. 3  Before you start uploading the video you can chose the video privacy settings. 4  Select the video you'd like to upload from your computer. 5  You can also record a video from your webcam, create a video slideshow or import a video from Google+.
Uploading a video clip to YouTube easy once you have your Google ID. Sign into YouTube using your Google ID, and follow these steps to put a clip on YouTube: 1.