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Critical structures and dose constraints
•
Kidneys:
at least 2/3 of the volume of 1 (right) normally functioning
kidney should receive less than 18 Gy (i.e. 40% of the
prescribed physical dose)
•
Liver:
EQD2 D
mean
< 30 Gy (α/β=3)
•
Heart:
3/3 <40 Gy; 2/3 <50 Gy; 1/3 < 66 Gy
(<30% cardiac silhouette may receive 40 Gy)
•
Spinal cord:
EQD2 D
max
≤ 50 Gy (α/β=2)
•
Spleen:
?
PTV
Liver
Left kidney
Right kidney
Spinal cord