The general shape and area under the DVH curve is instrumental in determining adequate coverage and homogeneity of dose in the target volume as well as in determining acceptable dose to critical structures.
In the tomotherapy plan, difficulty was encountered achieving an acceptable homogeneity of dose in the PTV.
A bolus was sometimes used to optimize the homogeneity of dose distribution.
Our statistical analysis was performed on 200 patients whose 3D-CRT were retrieved and revaluated to better define site and size of homogeneities of dose distribution and its relation with the site of the skin damage.
A further measurement of dose homogeneity was expressed by the homogeneity index (HI), which was (D2% D98%/D50%%, and a high HI indicates poor homogeneity.
The homogeneity of the dose within the planning volume was within ±10% of the prescribed dose.
Conformation number (CN), radical dose homogeneity index (rDHI), and dose delivered to healthy tissue were estimated.
The parameters evaluated included dose homogeneity and conformality, dose to organs at risk (OARs), and delivery efficiency.
The F-plan and the O-plan performed similarly in target dose homogeneity.
The target dose homogeneity was better using a PMBAO 5-beam configuration.
