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Rethink Imaging: Daily Summaries Delivered
by Imalogix
Rethink Imaging is a podcast that delves into the fascinating world of radiology, offering a fresh perspective on medical imaging and its impact on patient care and healthcare outcomes. The podcast, hosted by Chris St John, aims to bridge the gap between complex radiological concepts and the curious mind, from seasoned professionals to radiology enthusiasts. Each episode features engaging discussions with leading experts in medical imaging, including radiologists, medical physicists, radiologic technologists, world-leading academics, and industry thought leaders. Through inspiring interviews, the podcast explores a wide range of topics, from advancements in imaging technology and diagnostic practices to the future of radiology in healthcare.
Latest Episodes
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- 4 days ago31 min
Why the “Average Patient” Can’t Exist in Medical Imaging | Dr. Ehsan Samei
In this episode of Rethink Imaging, host Chris St. John sits down with medical physics legend Dr. Ehsan Samei to dissect why medical imaging often treats patients as population aggregates rather than individuals. Dr. Samei breaks down the hidden "degrees of freedom" in scan acquisitions, challenges the industry's reliance on rigid manufacturer default protocols, and outlines how physicists and radiologists can work together to deliver truly personalized, patient-centric care.
- 2 weeks ago37 min
What 5.2 Million CT Scans Taught Us About Patient Radiation Dose | Tom Griglock & Kalpana Kanal
In this episode of Rethink Imaging, host Chris St. John sits down with Dr. Kalpana Kanal and Dr. Thomas Griglock to discuss the newly updated Diagnostic Reference Levels (DRLs) and Achievable Doses (ADs) published ten years after the benchmark 2014 study. Analyzing a massive dataset of 5.2 million CT exams from 2025, they break down the 22% reduction in national DRLs, explain why low dose isn't always good dose, and emphasize why clinical optimization and diagnostic image quality must take precedence over endless dose reduction.
- Sep 3, 202645 min
Radiology Can't Keep Up. Here's Where AI Actually Helps | Dr. Nina Kottler
In this episode of Rethink Imaging, host Chris St. John sits down with Dr. Nina Kottler, Associate Chief Medical Officer of Clinical AI at Radiology Partners. Moving past basic lesion detection, Dr. Kottler addresses the massive 10x capacity-volume mismatch causing severe turnaround delays across healthcare systems. She breaks down the shift from fragmented, narrow AI tools to agentic foundation models and explains why funding clinical AI governance is key to sustainable medical innovation.
- Aug 13, 202634 min
Where MRI Safety Standards Still Fall Short, and How to Fix Them with Tobias Gilk
In this episode of Rethink Imaging, host Chris St. John sits down with Tobias Gilk, an internationally recognized MRI safety expert and founder of The Invisible Force podcast. Moving beyond standard compliance checklists, Tobias exposes the critical gaps in modern MRI safety training, regulatory oversight, and physical environment workflows. From analyzing the fatal 2025 Long Island projectile accident to revealing how safety inefficiencies secretly drain facility revenue, this conversation provides a definitive blueprint for protecting patients while maximizing operational throughput.
- Jul 30, 202625 min
The MRI Safety Myth: “No Radiation” Doesn’t Mean No Risk with Tobias Gilk
In this episode of Rethink Imaging, host Chris St. John sits down with Tobias Gilk, a world renowned healthcare architect and certified MRI safety expert. Moving beyond the standard industry assumption that MRI is entirely risk free due to its lack of ionizing radiation, Gilk pulls back the curtain on the critical, unique physical hazards lurking inside the magnet room. From analyzing tragic projectile accidents to tracing why modern imaging workflows are fundamentally broken, this conversation explores how true safety in radiology requires rethinking the architecture of patient screening from the ground up.
- Jul 23, 202647 min
Medical Imaging Professionals Need More Than Recognition: They Need Influence with Brandon Smith
In this episode of Rethink Imaging, host Chris St. John sits down with Brandon Smith, the historic first-ever back-to-back sitting president of the American Society of Radiologic Technologists (ASRT). Moving past the typical industry discussions around staff shortages, Brandon challenges the medical imaging community to reject quiet martyrdom, step out from behind the "ancillary" shadow, and transition from mere volunteerism to aggressive professional advocacy.
- Jul 9, 202642 min
Why Most Radiology AI Fails: Workflow, Governance & Integration Problem with Tessa Cook
In this episode of Frame by Frame: Rethink Imaging, host Chris St. John sits down with Dr. Tessa Cook, Vice Chair of Practice Transformation and Director of the Imaging Informatics Fellowship at Penn Medicine. Moving beyond the standard industry hype surrounding artificial intelligence, Dr. Cook pulls back the curtain on the critical infrastructure required to make advanced technology actually work on the clinical front lines. From pioneering open-source radiation dose tracking to designing enterprise-wide patient follow-up systems, this conversation explores how true innovation in radiology always starts with solving the workflow problem, not just writing better code.
- Jun 25, 202640 min
Photon Counting CT Could Revolutionize Diagnostic Radiology
In this episode of Rethink Imaging, host Chris St. John sits down with Dr. Aaron Sodickson, Division Chief of Emergency Radiology at Mass General Brigham and Associate Professor at Harvard Medical School, to pull back the curtain on how advanced CT technology is transforming patient care. Moving from standard grayscale imaging to full-body photon counting scanner operations, Dr. Sodickson reveals what it takes to bring cutting-edge clinical technology out of the development lab and onto the front lines of emergency medicine. From slicing patient radiation dose in half to wiping out diagnostic uncertainty, this conversation explores the massive leap forward in clinical radiology.
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About Rethink Imaging
Rethink Imaging is a podcast that delves into the fascinating world of radiology, offering a fresh perspective on medical imaging and its impact on patient care and healthcare outcomes. The podcast, hosted by Chris St John, aims to bridge the gap between complex radiological concepts and the curious mind, from seasoned professionals to radiology enthusiasts. Each episode features engaging discussions with leading experts in medical imaging, including radiologists, medical physicists, radiologic technologists, world-leading academics, and industry thought leaders. Through inspiring interviews, the podcast explores a wide range of topics, from advancements in imaging technology and diagnostic practices to the future of radiology in healthcare.
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