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Table 1 Summary of dose prescription and dose-volume constraints in VMDWAT planning

From: Monitoring of mechanical errors and their dosimetric impact throughout the course of non-coplanar continuous volumetric-modulated arc therapy

Treatment site

Dose-volume constraints

PTV

OARs

Skull base tumor

D99% = 90%

Eye

Dmax < 45 Gy

 

Dmax < 107%

Lens

Dmax < 10 Gy

  

Chiasm

Dmax < 55 Gy

  

Brainstem

Dmax < 59 Gy

  

Optic nerve

Dmax < 55 Gy

Prostate cancer

Dmean > 99%

Bladder wall

V40 Gy < 65%

 

D95% > 90%

 

V70 Gy < 35%

 

V90% > 95%

Rectal wall

V40 Gy < 65%

 

Dmax < 110%

 

V60 Gy < 35%

   

V70 Gy < 25%

   

V78 Gy < 1%

  1. Abbreviations: VMDWAT volumetric-modulated Dynamic WaveArc therapy, PTV planning target volume, OARs organs at risk, D mean mean dose, D max maximum dose D xx% dose covering xx% volume, V yy Gy volume receiving yy Gy
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Radiation Oncology

ISSN: 1748-717X

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