Limitations of margin recipes
22
According to ‘margin recipe’ bladder tumour at the dome
[Van Herk equation 2.5 ∑ + 0.7
] = 4cm margin
Oversimplification
?applicability to bladder if derived from solid organ
comparison with direct empirical approaches up 9mm
difference
Muren LP, Smaaland R, Dahl O: Organ motion, set-up variation and treatment margins in radical radiotherapy of urinary bladder cancer.
Radiother Oncol 2003, 69(3):291-304
.