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Towards extracranial SRS:
body frames
•
AAPM TG 101 recommendation:
Ø
“Body frames and fiducial systems are OK for immobilization
and coarse localization”
Ø
“They shall
NOT
be used as sole localization technique”
•
Deviations of 12 mm have
been observed
•
Applying a safety margin of 5
mm, 12-16% of the target
might be partially missed
•
(Wulf
et al.
)
•
CT prior to treatment is a pre-
requisite
•
Lax
et al.
Stereotactic Body Frame, Lax
et al.
… still requires IGRT
SBRT 2017 - D. Verellen
15
Lax
et al.
Acta Oncol 1994
Benedict
et al.
Med Phys 2010