Adaptive Radiotherapy for Head, Neck, and Thorax

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Lung Segmentation

Key Investigators

• GaTech: Ivan Kolesov, Vandana Mohan, and Allen Tannenbaum
• MGH: Gregory Sharp

Objective

First, we are developing an algorithm to perform segmentation of a number of structures in the Head, Neck, and Thorax. In an effort to avoid offsetting the main advantage, accuracy, of using proton therapy, therapy plans that are based on imagery collected prior to the first session must be corrected over the course of the treatment. Once segmentation is available, the goal is to register patient scans to account for anatomical changes between visits.

Approach, Plan

• Get an accurate segmentation before beginning work on registration
• First structure of interest is the mandible, by the end of the project week, obtain its segmentation
• Come up with a strategy for segmenting the brain stem
• Create an outline for further progress after the project week

Progress

• Segmentation results are shown above.
• We have three potential approaches to segmenting the brain stem to experiment with.
• Created a complete data set for one patient including label maps for structures of interest.