23. Measuring Attenuation
Published on: 20/07/2026
How photon attenuation affects beam intensity and dose in therapy.
RTPhysics Concept Review
Radiation Therapy Physics
Concepts Review Blog
Sara Lorraine Gill, MSRS, CMD
Medical Dosimetrist and Educator
21. Pair Production
Published on: 18/07/2026
How high-energy photons create matter through pair production.
RTPhysics Concept Review
18. Transmission & Attenuation
Published on: 06/07/2026
Radiation can transmit, scatter, or absorb as it passes through matter. Learn how attenuation works — and why it's essential to understanding dose delivery in radiation therapy.
RTPhysics Concept Review
17. Ionization & Excitation
Published on: 06/07/2026
Excitation vs. ionization: two ways radiation interacts with atoms. Learn how each process works and why ionization is the key to understanding how radiation deposits dose in tissue.
RTPhysics Concept Review
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