Table of Contents Table of Contents
Previous Page  508 / 1578 Next Page
Information
Show Menu
Previous Page 508 / 1578 Next Page
Page Background

Tracking: error analysis

Tumor localization:

Ø

Fiducial markers: stability, how many needed, migration, …

Ø

Direct visualization: real-time requires planar imaging, only limited

number of cases practically possible

Correlation model between external markers (chest motion …)

and internal tumor motion.

Prediction model forecasting tumor position to compensate for

system latency:

Ø

Cyberknife: ± 115 ms (Hoogeman

et al.

)

Ø

MLC: ± 140 ms (Poulsen

et al.

)

Ø

Vero: ± 50 ms (Depuydt

et al.

)

SBRT 2017 - D. Verellen