X-ray tomography 103: filtered back-projection

I explain visually how the most classical X-ray tomography reconstruction method works. It is called Filtered Back-Projection (FBP) and consists of two parts: back-projection followed by filtering.
If you have not seen the previous videos in this series, it may be a good idea to watch them first. You will find them in this playlist:
• Tomography 100: the ba...
Human head slice image credit: Andrew Ciscel, Wikimedia commons, license CC BY-SA 2.0.