Table 1

 Finger’s slotted plaque radiation therapy

Example of tumoursPlaque sizeSlot widthSlot lengthSourceDose (tumour)Prescription (point–axial)Dose (optic disc)Dose (fovea)
I, iodine; Pd, palladium; Ru, ruthenium.
*See fig 2c.
Juxtapapillary
10×10×51686Pd-103855167.980.19
10×10×51686I-125855135.964.9
10×10×51686Ru-10685564.48.5
Barely circumpapillary*
12×12×51888Pd-103855144.967.54
12×12×51888I-125855135.368.7
12×12×51888Ru-106855229.359.19
Moderately circumpapillary
14×14×520810Pd-103855152.294.6
14×14×520810I-125855136.785
14×14×520810Ru-106855276.7123.5
Largely circumpapillary
16×16×522812Pd-103855149.797.35
16×16×522812I-125855171110.3
16×16×522812Ru-106855423.5220.4