Physics Bucharest 2017

6/3/2017

Knowledge based planning

Evaluation of a Knowledge-Based Planning Solution for Head and Neck Cancer Jim P. Tol, MSc, Alexander R. Delaney, BSc, Max Dahele, et al, VU University Medical Center, Amsterdam, The Netherlands Int J Radiation Oncol Biol Phys, Vol. 91, No. 3, pp. 612e620, 2015

RapidPlan knowledge-based treatment plans were comparable to CP if the patient's OAR-planning target volume geometry was within the range of those included in the models.

49

Class Solutions or Automatic planning

• Practical problem: Planning is time consuming • For a given tumor site (i.e. prostate or H&N) a • class solution ‘ includes: • fixed dose prescriptions • initial values for all parameters that define the objective function • Define their relative importance

• E.g. for H&N

• Sparing of Spinal cord and Brain stem • PTV coverage • Parotid sparing • Larynx sparing • Oral cavity sparing

50