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Table 2 Population margins calculated using a conventional margin recipe [18] and the composite volume technique for each image-matching scenario

From: A novel CBCT-based method for derivation of CTV-PTV margins for prostate and pelvic lymph nodes treated with stereotactic ablative radiotherapy

Match type

Technique

Structure

Margin (mm)

Bone

Margin Recipe

PO/PSV

9.4

Composite volume

PO

8.3

PSV

9.9

LN

5.9

Soft Tissue (prostate)

Margin Recipe

PO/PSV

6.7

Composite volume

PO

5.2

PSV

6.5

LN

7.6