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Table 2 Treatment planning and delivery methods

From: Clinical results of conformal versus intensity-modulated radiotherapy using a focal simultaneous boost for muscle-invasive bladder cancer in elderly or medically unfit patients

  Elective Boosta
  Dose Target organs PTV Doseb Delivery
3D-conformal 40 Gy Bladder, prostate, and pelvic lymph nodesc Box technique, based on anatomical landmarks 55–60 Gy Concomitant
IMRT 40 Gy Bladder, prostate, and pelvic lymph nodesc Cranially and anteriorly: 15 mm. 55–60 Gy Concomitant
Other directions: 8 mm 55–60 Gy Simultaneously integratedd
VMAT 40 Gy Bladder, and pelvic lymph nodesc Cranially and anteriorly: 13 mm. 55–60 Gy Simultaneously integrated
Other directions: 7 mm
  1. aIn case fiducial markers were present, a uniform boost margin of 10 mm was used. Otherwise, an adaptive margin strategy was employed
  2. bA dose of 60 Gy was standard after 2006. 55 Gy was chosen only when a dose of 60 Gy would result in a too high small bowel dose
  3. cLymph nodes were excluded from the elective field in case of comorbidities that required a target volume reduction
  4. dSimultaneous integration of the boost plan with the elective plan was implemented after October 2011