J Med Phys Close
 

Figure 1: Conformation number (CN): (a) The ring represents the reference isodose line (RI) that includes the planning target volume (PTV) and organs at risk (OARs), (b) The first term of the CN formula (TVRI/TV) is less than one if TV is not covered entirely by the volume of RI, and the second term (TVMsub>RI/VRI) is less than one if OAR is within the volume of RI

Figure 1: Conformation number (CN): (a) The ring represents the reference isodose line (RI) that includes the planning target volume (PTV) and organs at risk (OARs), (b) The first term of the CN formula (TV<sub>RI</sub>/TV) is less than one if TV is not covered entirely by the volume of RI, and the second term (TVMsub>RI</sub>/V<sub>RI</sub>) is less than one if OAR is within the volume of RI