Ep. 553 Dosimetry University Part II: Understanding Partition and Voxel-Based Approaches with Dr. Tyler Sandow and Dr. Nima Kokabi

BackTable Vascular & Interventional

BSA, MIRD, or voxel-based dosimetry? Join us for part 2 of Dosimetry University where interventional oncologists Dr. Tyler Sandow, Dr. Nima Kokabi, and Dr. Kavi Krishnasamy explore and debate the critical nuances of a successful Y90 procedure, covering dosing methods, lung shunt management, and when to incorporate other therapeutic approaches.

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This podcast is supported by:

Sirtex
https://www.sirtex.com/

Medtronic Emprint
https://www.medtronic.com/emprint

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SYNPOSIS

The episode begins with a discussion on methodologies for calculating lung shunt fractions using planar imaging versus SPECT CT. The physicians highlight the implications of various dosimetry models, including BSA (Body Surface Area), MIRD (Medical Internal Radiation Dose), and voxel-based dosimetry for determining prescribed activity. Drawing on their clinical experience, they address the management of high lung shunt fraction cases and the application of therapeutic strategies like TACE (Transarterial Chemoembolization) and SBRT (Stereotactic Body Radiotherapy). The conversation also covers the roles of cryoablation and microwave ablation in treating centrally located lesions. The episode concludes with a case study emphasizing the importance of individualized dosimetry planning.

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TIMESTAMPS

00:00 - Introduction
01:05 - Lung Shunt Calculation Methods
06:42 - BSA, MIRD, and Voxel-Based Dosimetry
16:03 - High Lung Shunt Management
30:02 - Case Study: Liver Tumor Treatment
34:10 - Cryo vs Microwave: A Safer Option?
35:42 - Y-90 Procedure: Imaging and Techniques
43:35 - Dosimetry and Dose Calculations
51:10 - Post-Treatment Analysis and Outcomes
57:51 - Transplant Considerations and Aggressive Treatments
58:18 - Conclusion and Final Thoughts