Comment on "A planning quality evaluation tool for prostate adaptive IMRT based on machine learning" [Med. Phys. 38, 719 (2011)].
(though neither of the two thatdescribe the calculation of the OVH). However, when men-tioning the DTH, they make no mention of our previousintroduction of the concept. Furthermore, when citing ourwork they make an allusion to a possible limitation of ourdescriptor, saying “it could not account for the conditionswhen … OVH curves entangle”