A new index for evaluating the fit of dose distribution to target volume: Dose distribution fix index

To develop a new dose evaluation index, fit index (FI), to help evaluate the fit between isodose surfaces at different percentages of the prescription dose and the target volume. Two types of FI, differential and cumulative, were defined. The differential fit index (dFI) was defined as the ratio of the integral dose of volume occupied by an isodose surface to the integral dose of the planning target volume. The cumulative fit index (cFI) was defined as the integral of dFI from the minimum dose of clinical significance to the 100% prescription dose.

Source: Medical Dosimetry - May 14, 2021 Category: Radiology Authors: Lingling Yan, Yingjie Xu, Bin Liang, Jianrong Dai Tags: Dosimetry Source Type: research