title: Comment on 'Imaging of prompt gamma rays emitted during delivery of clinical proton beams with a Compton camera: feasibility studies for range verification'.
abstract: The origin ensemble (OE) algorithm is a new method used for image reconstruction from nuclear tomographic data. The main advantage of this algorithm is the ease of implementation for complex tomographic models and the sound statistical theory. In this comment, the author provides the basics of the statistical interpretation of OE and gives suggestions for the improvement of the algorithm in the application to prompt gamma imaging as described in Polf et al (2015 Phys. Med. Biol. 60 7085).
authors.forename: Arkadiusz
authors.initials: A
authors.lastname: Sitek
mesh_terms: D005240:Feasibility Studies; D005720:Gamma Rays; D009010:Monte Carlo Method; D061766:Proton Therapy; D011522:Protons
chemical_list: D011522:Protons