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+.
That is why some of your MP4 files can upload to YouTube, while other MP4 videos can't. Reason 1 The MP4 file is too long or large to upload to YouTube. By default, you can upload videos that are 15 minutes long. To upload longer videos, you may follow these guide. How to Successfully Upload MP4 to YouTube? In order to successfully upload any MP4 to YouTube, we had better compress and convert MP4 to YouTube more compatible MP4 format. Make Preparation: Run MP4 to YouTube Converter