CT sim data sets with associated target and normal tissue structure sets for the following cases will be used:  Oropharynx, Nasopharynx, Larynx, Oral Cavity, Paranasal sinus, and Parotid. Evidence based best practices will be shared.

Treatment of liver metastases with SBRT is increasingly common in the setting of metastatic disease and even primary tumors. However, challenges are unique to the liver that include deformation of the organ itself and constantly shifting OAR both intra-fraction and inter-fraction.

Stereotactic ablative body radiotherapy for early stage lung cancer has yielded outstanding outcomes comparable to radical resection.  The approach requires special technologic requirements and contouring expertise to be safely performed.   For locally advanced lung cancers, standard fractionatio

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Difficult or controversial clinical cases are presented along with several different management plans favored by select specialists in that field, who provide thought-provoking viewpoints.

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Accurate contouring of both tumors and critical avoidance structures improves tumor control and side effect profile. IGRT, SRS, and other techniques that minimize margin and take advantage of sharp dose fall-off, are unforgiving of inaccuracies in target and critical structure definition.

Knowledge of radiotherapy target volume delineation is crucial for accurate and effective delivery of radiotherapy for tumors of pancreatic and anorectal tumors. IMRT is being increasingly employed.

The increased conformality of planning techniques such as IMRT and VMAT make thoughtful, careful identification of anatomy and delineation of targets critical for good outcomes.