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Table 7 Treatment planning

From: Clinical practice of image-guided spine radiosurgery - results from an international research consortium

 

UHW

UPMC

UofT

UVAMC

RSMC

Treatment planning system

Pinnacle

Pinnacle

Pinnacle

Varian Eclipse, Tomotherapy,

Pinnacle for Elekta

1. Elekta/CMS XiO,

2. Elekta/CMS Monaco

Linac model/MLC leaf width

Elekta Synergy S/4 mm

Synergy S/4 mm

Elekta Synergy S/4 mm

Elekta Synergy S,

Varian Triliogy,

Tomotherapy

Elekta Synergy S/4 mm

IMRT or VMAT treatment planning

Both

IMRT

Both

VMAT

Both

If step-and-shoot IMRT: number of beams

9 beams on average

9 to 14, but most are 12 beams

9 - 11 beams

10 beams

10 beams

If VMAT: number of arcs

1-2 arcs

Not applicable

1 arc

1-3 arcs

1. one arc 120-140 segments

2. VMAT - 4 arcs - 30-40 segments per arc

Full or partial VMAT arc

360 degrees

360 degrees

360 degrees

360 degree arcs

1. VMAT 350 deg arc

2. VMAT posteriorly biased arcs, 2 couch kicks

Photon energy

6 or 10 mV depending on location

6 MV

6 MV

6 MV

6 MV

Dosimetric parameters for plan acceptance

No strict acceptance criteria.

Usually V90

CTV V80 of at least 80-90%

No strict acceptance criteria

Generally D90