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Photoelectric vs Compton effect | Visual Explanation

This video contains a simplified, visual explanation of the differences and clinical applications of the Photoelectric and Compton effect. Summary: - There are two major ways in which diagnostic x-rays interact with tissue. - In the photoelectric effect, a single electron absorbs all the energy of an incident photon, while in the Compton effect, the incident photon only transfers a portion of its energy to an electron. - The photoelectric effect is the dominant type of interaction in materials with higher atomic numbers, such as contrast agents, bone and lead. - Compton scattering is the dominant type of interaction in material with lower atomic numbers, such as human tissue and air. #Photoelectric #Compton #Xray Timecodes: 0:00 Introduction 0:19 What is the photo-electric effect? 1:10 What is the compton effect? 1:30 Compton scattering in X-ray imaging (Image quality, dose, background radiation) 1:47 Summary 1 2:03 Photo-electric effect - When? 2:16 Why lead as shielding material? 2:23 Photoelectric vs. Compton vs. Pair production 2:33 Photoelectric effect in X-ray imaging (contrast) 3:05 K-edge 4:11 Summary 2 4:40 The end