Skip to main content

Table 4 Critical doses and volumes of the different organs at risk for the different planning techniques

From: Fast Helical Tomotherapy in a head and neck cancer planning study: is time priceless?

  1. Abbreviations: PRV planning risk volume, PTV planning target volume, SE standard error; high and low: was used in symmetrical organs where ‘ipsi- and contralateral’ was not appropriate; NA not analysed because of the low number of parameters
  2. The left side of the table gives the mean values of the OARs. the right part of the table indicates the statistically significant differences (Repeated Measures ANOVA) between the five techniques. each with its own colour highlighting the technique doing best in the comparison: red = Helical TomoHD; yellow = RapidArc VMAT; blue = TomoHD Fast; green = TomoEdge Fast. For HT and RA the results of our previous planning study were used [2]