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Program Information

Treatment Planning Fundamentals


R Howell

M Matuszak

I Chetty




R Howell1*, M Matuszak2*, I Chetty3*, (1) UT MD Anderson Cancer Center, Houston, TX, (2) University of Michigan, Ann Arbor, MI, (3) Henry Ford Health System, Detroit, MI

Presentations

SA-C-BRD-0 (Saturday, March 7, 2015) 1:30 PM - 3:30 PM Room: Ballroom D


While it is important to understand fundamental, standard-of-care aspects of treatment planning and delivery, the frequent advances in techniques necessitates an improvement in knowledge about new approaches, and how they should be implemented and utilized in the clinical setting. While, the topic of regional node irradiation (RNI) for breast cancer remains hotly debated in the radiation oncology community, there is a trend toward more frequent inclusion on RNI in both breast and chest wall radiotherapy. This presentation will focus on the fundamental physics and dosimetry principles of such treatments and techniques to minimize dose to heart and lungs. Treatment of lung cancers is confounded by issues related to tumor motion and tissue heterogeneity. In the context of stereotactic body radiotherapy (SBRT) for treatment of early stage lung tumors, where small fields are often used, dose calculation accuracy is of paramount importance. Proper planning margins need to be designed to accurately account for respiratory-induced tumor motion and residual setup errors from image-guided treatment.

Learning Objectives:
1. To learn the fundamentals of breast treatment planning for cases requiring RNI (supraclavicular and internal mammary nodes) including positioning, isocenter placement, beam arrangements and modulation, techniques to minimize dose to organs at risk, e.g., deep inspiration breath hold, and delivery considerations.
2. To learn the trade off choices in using either VMAT or IMRT including target size, anatomical location and organs at risk.
3. To review fundamental aspects of simulation, planning and delivery of radiation for treatment of lung cancers. To review the triumphs and challenges associated with current and new approaches for image-guided treatment of lung tumors in the face of motion.

Handouts


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