Advanced Cranial SRS with Dynamic Spherical Delivery: A Novel Approach to Improving Treatment Quality & Delivery Efficiency with ZAP-X Gyroscopic Radiosurgery
In this upcoming webinar, participants will gain insight into a potential next frontier in advanced cranial radiosurgery: Dynamic Spherical Delivery* (DSD) — a novel under-development treatment paradigm designed to dramatically enhance treatment efficiency while expanding the boundaries of non-coplanar beam delivery.
At the core of DSD is the concept of continuous beam delivery throughout the treatment sequence. Rather than relying on discrete beam positions or segmented arcs, DSD is designed to maintain uninterrupted beam output while robotic dual gantries dynamically traverse complex trajectories around the patient. These trajectories may include orthogonal beam paths, spiral paths, oblique spirals, or hybrid combinations engineered to optimize dose conformality and gradient.
The objective is straightforward yet ambitious: enhance dose conformity, sharpen dose gradients, and significantly reduce treatment time — goals that have long defined the pursuit of next-generation stereotactic radiosurgery.
During the webinar, presenters will review early phantom studies exploring the feasibility of Dynamic Spherical Delivery, along with the technological innovations that have only recently made such a delivery paradigm possible. Attendees will gain insight into how advances in robotic motion, gyroscopic engineering, and treatment delivery concepts may open entirely new possibilities for non-coplanar radiosurgery.
Learn more by visiting: https://zapsurgical.com/dynamic-spherical-delivery-dsd/
* The ZAP-X® Gyroscopic Radiosurgery® platform was FDA cleared in 2017 and currently in clinical use at over 30 locations worldwide. Dynamic Spherical Delivery (DSD) is a conceptual works-in-progress undergoing active phantom studies. It is not available for commercial sale or clinical use.
The live webinar takes place September 3, 2026 at 11:00 a.m. Eastern time.
This activity is available from September 3, 2026, through 11:59 p.m. Eastern time on March 3, 2027.
Target Audience
This course is designed to meet the interest of radiation oncologists, radiation physicists, surgeons, medical oncologists and residents.
Learning Objectives
At the conclusion of this activity, participants should be able to:
- Describe the principles of Dynamic Spherical Delivery (DSD) and explain how its continuous beam delivery approach differs from conventional non-coplanar stereotactic radiosurgery techniques.
- Examine the technological innovations—including robotic motion, gyroscopic engineering, and advanced treatment delivery concepts—that enable the proposed DSD treatment paradigm.
- Evaluate the potential clinical benefits and feasibility of Dynamic Spherical Delivery based on early phantom study findings, including its potential to improve dose conformity, sharpen dose gradients, and reduce treatment time.
Speakers
- John R. Adler, Jr., MD, ZAP Surgical CEO / Emeritus Dorothy & TK Chan Professor of Neurosurgery and Radiation Oncology at Stanford University.
- Alonso Gutierrez, PhD, MBA, FAAPM, Vice Chair of Medical Physics and Dosimetry; and Associate Professor of Radiation Oncology, Miami Cancer Institute, Miami, FL
- Ranjini Tolakanahalli, PhD, Director of Photon Physics, Miami Cancer Institute, Miami, FL
Continuing medical education credit is not available for this activity.
Price
Acknowledgement
By registering for and accessing the live webinar, I acknowledge that the content has been prepared by the Webinar Sponsor, does not necessarily reflect the views of ASTRO, does not imply endorsement of the Webinar Sponsor or its products by ASTRO, and is being offered solely for the educational benefit of its viewers.
Data Use
If you are located outside of the United States, please complete this consent form.
If you are located within the United States, by registering for and accessing this webinar, I understand that my name, job title, profession, professional affiliation and location (collectively “Data”) will be shared with the sponsor of this webinar who may use this Data to provide follow-up correspondence, post-webinar surveys and marketing materials.
Policies
The activity and its materials will only be available on the ASTRO website until March 3, 2027, regardless of purchase date. At the expiration of the activity, participants will no longer have access to the activity or its materials. ASTRO reserves the right to remove an activity before its expiration date.
Required Hardware/software
One of the two latest versions of Google Chrome, Mozilla Firefox, Internet Explorer or Safari.

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