
Small Fields, Big Decisions: The Evolving Role of Partial Breast Irradiation Webinar
Partial breast irradiation (PBI) has emerged as an increasingly important treatment option for appropriately selected patients with early-stage breast cancer, offering a more targeted approach to radiation therapy while reducing treatment
burden and minimizing exposure to surrounding normal tissues. With updated ASTRO clinical practice guidelines, maturing randomized trial data, and advances in radiation delivery techniques, the role of PBI continues to expand in
contemporary breast cancer management.
This educational webinar will review the evolving evidence supporting PBI, highlighting key clinical trials, expanded patient selection criteria, modern treatment techniques, and dose-fractionation schedules. Particular emphasis will be placed on practical challenges and ongoing controversies, including PBI in younger patients, invasive lobular carcinoma, and patients undergoing oncoplastic breast surgery. Faculty will also discuss treatment planning considerations, technique, tumor-bed localization, cosmetic outcomes, and strategies to optimize the balance between oncologic safety and
treatment-related toxicity.
Through evidence-based discussion and clinically relevant scenarios, participants will gain practical insights into integrating PBI into routine practice, navigating challenging treatment decisions, and advancing individualized, patientcentered
breast cancer care.
Live Webinar: November 10, 2026, at 2 p.m. Eastern time
This activity will be available from November 10, 2026 to November 9, 2028.
Continuing education credit is available for this activity until December 9, 2026.
Target Audience
The activity is designed to meet the interests of radiation oncologists and radiation oncology residents
Learning Objectives
Upon completion of this activity, participants should be able to:
- Participants should be able to correctly determine PBI eligibility and justify their treatment recommendations using guideline-based criteria in a clinical case scenario.
- Participants should be able to select and justify an appropriate PBI technique and fractionation schedule for a clinical case, incorporating patient-specific factors, treatment-planning considerations, and expected clinical outcomes.
Course summary
- 1.00 AMA PRA Category 1 Credit™
The American Society for Radiation Oncology (ASTRO) is accredited by the Accreditation Council for Continuing Medical Education for physicians. ASTRO designates this Live activity for a maximum of 1.00 AMA PRA Category 1 Credit™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
- 1.00 Certificate of AttendanceThis activity was designated for 1.00 AMA PRA Category 1 Credit™.
Moderator:
- Parul Barry, MD, is employed by the University of Pittsburgh Medical Center. Dr. Barry has no relevant financial relationship with ineligible companies.
Speakers:
- Tiarrah Salvi-Jackson, MD, is employed by Duke Cancer Institute. Dr. Salvi-Jackson has no relevant financial relationship with ineligible companies.
Planners:
- Malcolm Mattes, MD, is employed at Rutgers Cancer Institute. Dr. Mattes received research/grant funding from Gilead Sciences (relationship ended 8/30/2025). Dr. Mattes has no relevant financial relationship with ineligible companies.
- Parul Barry, MD, is employed by the University of Pittsburgh Medical Center. Dr. Barry has no relevant financial relationship with ineligible companies.
- Michael Haddock, MD, is employed by Mayo Clinic and has no relevant financial relationship with ineligible companies to disclose.
- Manisha Palta, MD, is employed by Duke Cancer Center and Duke University Hospital. Dr. Palta receives grant/research funding from Merck and Varian Medical Systems.
- Salma Jabbour, MD, is employed by Rutgers Cancer Institute. Dr. Jabbour receives grant/research funding from Merck & Co., Inc. and Beigene. Dr. Jabbour receives compensation/payment as a consultant with Radialogica and IMX Medical.
All relevant financial relationships have been mitigated.
The American Society for Radiation Oncology (ASTRO) is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.
Continuing education credits for this activity must be claimed by December 9, 2026, by completing the evaluation.
Available Credit
- 1.00 AMA PRA Category 1 Credit™
The American Society for Radiation Oncology (ASTRO) is accredited by the Accreditation Council for Continuing Medical Education for physicians. ASTRO designates this Live activity for a maximum of 1.00 AMA PRA Category 1 Credit™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
- 1.00 Certificate of AttendanceThis activity was designated for 1.00 AMA PRA Category 1 Credit™.
Price
Course Fees:
ASTRO members must log in to the ASTRO website to view and receive the member rate.
- Nonmember: $149
- Member: $99
- Member-in-Training: $49
- Student/Graduate Student/PGY-1 Member: $49
- Postdoctoral Fellow Member: $49
Policies:
No refunds, extensions, or substitutions will be made for those participants who, for any reason, have not completed the activity by the expiration date.
Participants using ASTRO Academy activities to satisfy the requirement of a Continuing Certification (MOC) program should verify the credit number and type and availability dates of any activity before making a purchase. No refunds, extensions, or substitutions will be made for participants who have purchased activities that do not align with their MOC requirement.
The activity and its materials will only be available on the ASTRO website until November 9, 2028, 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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