PMC7405869_01
CT reconstruction of the coronal plane shows the upper and caudal field borders. LRA, left renal agenesis.
fonc-10-01136-g0001.jpg
PMC7405869_01_fonc-10-01136-g0001.jpg
F1
The upper field border was at the level of the L4/L5 interspace, and the caudal field border was at the lower margin of the obturator foramen (Figure 1).
The green area is shown as PTV. The red line is the 4,500 cGy isodose curve. L, left uterine; R, right uterine.
fonc-10-01136-g0002.jpg
PMC7405869_01_fonc-10-01136-g0002.jpg
F2
The prescription dose to cover 95% of the PTV was 45 Gy in 25 fractions (Figure 2).