Course book Advanced Treatment Planning 2018

Meningioma RT – Organs At Risk constraints

Organ

Organ

Clinical Constraint

Clinical

PBT [IMRT]

Constraint

Brainstem

Skin

D20cm 2 < 60 Gy (surface

D2% < 63 Gy [< 58 Gy]

Brainstem center

D2% < 54 Gy [=]

dose)

Spinal cord

Temp Lobe L/R

D2cm 2 < 72 Gy

D2% < 63 Gy [< 58 Gy]

Spinal cord center

Cochlea R

D2% < 54 Gy [=]

Dmean < 30 Gy

Opticus L/R

Parotis L/R

D2% < 56 Gy [=]

Dmean < 26 Gy

Chiasm

Larynx

D2% < 56 Gy [=]

Dmean < 50 Gy; V50 Gy

Bulbus L/R

D2% < 45 Gy, Dmean < 30

< 30%

Mandible

Gy

D2% < 70 Gy

Hippoc. L/R

D100% < 10 Gy; D2% <

16 Gy

Lacr.gl. L/R

Dmean < 26Gy

NB constraints apply to 39#

Retina L/R

D2%<45Gy