Radiation Therapy Physics

Concepts Review Blog

Sara Lorraine Gill, MSRS, CMD

Medical Dosimetrist and Educator

What is matter

What is matter

Sara Lorraine Gill
Published on: 11/02/2026

What is matter? Matter is anything that has mass and occupies space. That means everything around us is made of matter. Regardless of size, it all counts because it takes up space and has mass and therefore weight.

RTPhysics Concept Review
Start with Mindset

Start with Mindset

Sara Lorraine Gill
Published on: 11/02/2026

Mindset can move mountains. Building confidence comes from taking action and being willing to learn. Let RTPhysics guide you every step of the way!

RTPhysics Concept Review
Well hello there!

Well hello there!

Sara Lorraine Gill
Published on: 11/02/2026

Welcome to the Radiation Therapy Concepts Review Blog. Each post is emailed to subscribers on a weekly basis to help review important concepts in Radiation Therapy Physics.

RTPhysics Concept Review

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