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+.
Video Transcript. Hi, my name is Freddy Kuguru. And this is how to add a thumbnail to your YouTube video. You want to add a thumbnail to your YouTube video that's capturing and attractive that will bring, that will attract users to click on that thumbnail and watch your YouTube video.The way you can do this is through your video manager.Log into YouTube and then click the gear button in the top right corner and go into video manager. And you can also edit the thumbnail at instant or the moment when you upload a video.ideo Transcript. Hi, my name is Freddy Kuguru. And this is how to add a thumbnail to your YouTube video. You want to add a thumbnail to your YouTube video that's capturing and attractive that will bring, that will attract users to click on that thumbnail and watch your YouTube video.