Proton Therapy vs X-Ray Radiation

Radiation can be one of the scariest words you hear after a cancer diagnosis. In this episode of What I Wish I Knew, host and cancer survivor McKenna Avery shares what it felt like to finish 33 rounds of proton radiation, including the emotional “last day” moment, and the three things she wishes she knew sooner: that proton therapy can be an option, the power of visualization during treatment, and why consistent moisturizing matters.Dr. Dan sits down with radiation oncologist Dr. James Urbanic (UC San Diego) for a grounded, patient-first explanation of radiation therapy and the real-world decision-making behind it. They break down the goals of treatment (symptom relief, life prolongation, post-surgery “cleanup,” and curative intent), why some cancers are treated with radiation to preserve function (including larynx/voice box, cervix, and anal cancers), and how the field has advanced with better imaging, tighter accuracy, and faster planning.You’ll also hear a clear, non-hype comparison of proton therapy vs conventional X-ray (photon) radiation, including the Bragg peak, why “best” depends on the situation, and how technique differs from modality (3D conformal, IMRT/IMPT, SBRT, SRS). Dr. Urbanic walks through what planning day looks like (CT imaging, immobilization devices, contrast considerations, and behind-the-scenes safety checks), what side effects can look like across body areas (including skin reactions and why proton skin reactions may be more pronounced), how clinicians think about re-irradiation, and where immunotherapy may or may not fit alongside radiation. The conversation also touches on cost, insurance authorization realities, access gaps, and what patients should listen for when deciding if a care team feels trustworthy and thorough. This conversation is for patients, survivors, caregivers, and clinicians seeking clarity, not marketing. Educational only, not medical advice.Episode Chapters:00:00:00 - Cold Open: Progress, Immunity, and Hope00:00:29 - Welcome + McKenna’s Proton Radiation Story00:01:06 - Three Things McKenna Wishes She Knew About Proton Therapy00:02:03 - Meet Dr. James Urbanic00:02:51 - From Ships to Cancer Care: Dr. Urbanic’s Path00:05:31 - Radiation Therapy Basics Explained00:07:22 - The Goals of Radiation Treatment00:09:00 - When Radiation Replaces Surgery00:10:48 - How Radiation Therapy Has Evolved00:13:30 - When Patients Want to “Go Natural”00:18:25 - Radiation Myths, Safety, and Trust00:21:46 - What Is Proton Therapy?00:26:41 - Who Proton Therapy Helps Most00:32:39 - Cost, Coverage, and Insurance for Proton Therapy00:40:27 - Proton Therapy Hype vs Reality00:42:39 - SBRT, SRS, and Modern Radiation Techniques00:50:30 - Immunotherapy and Radiation Used Together01:01:54 - What Happens on Radiation Planning Day01:06:15 - AI and Machine Learning in Radiation Planning01:11:52 - What Treatment Looks Like Behind the Scenes01:21:03 - Radiation Side Effects: Short-Term and Long-Term01:24:25 - Re-Irradiation: When and Why It’s Considered01:31:28 - Diet, Exercise, and Mind-Body Support During Treatment01:38:46 - The Future of Radiation: New Particles, New Questions01:43:23 - Access, Geography, and Proton Center Availability01:48:18 - Questions Every Patient Should Ask01:50:40 - Resilience, Meaning, and Joy in the WorkDisclaimer:This episode is for general educational purposes and reflects personal experiences and professional perspectives. It is not medical advice and is not a substitute for individualized diagnosis or treatment planning. Always consult your oncology team for guidance specific to your situation. If you think you may be experiencing an urgent medical issue, seek immediate care.