Microsoft PowerPoint - TVD2017_Intro_VK_ws_final.pptx

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The pathology-based CTV margins

Ligtenberg et al.

Radiat Oncol

2017;123:63-70.

Margin (mm) Mean volume (ml)

Δ (%)

Pathology-based GTV

-

15.7

-

CTV-T (CT) clinical

10

90.6

477

CTV-T (CT)

4.3

54.5

247

CTV-T (MR)

6.1

58.8

275

CTV-T (FDG-PET)

5.2

50

218

• Tumor volume not included in the imaging-based CTV <0.01 ml.

• No no-contiguous microscopic disease.