Image guidance quality assurance of a G4 CyberKnife robotic stereotactic radiosurgery system

5Citations
Citations of this article
13Readers
Mendeley users who have this article in their library.
Get full text

Abstract

The image guidance of a CyberKnife robotic radiosurgery system was quality controlled, including the overall performance of the target locating subsystem and the performance of the x-ray generators and flat panel digital cameras subcomponents. Accuracy and precision of the kV and exposure time settings of the x-ray generators, linearity of the x-ray output, spatial resolution and geometrical distortion of the acquired x-ray images were measured. Total accuracy and precision of the target locating subsystem in defining the position of an anthropomorphic head and neck phantom placed on treatment couch was also measured. Accuracy and precision of the kV as well as exposure time settings and linearity of the x-ray output were found within the acceptance limits suggested in diagnostic radiology. The acquired x-ray images were found to depict the shapes of the imaging objects without any geometrical distortion, being able to resolve differences in the features of imaging objects with critical frequency of 1.3 lp/mm and 1.5 lp/mm for camera A and B, respectively. Total target locating system accuracy was found within 0.2 mm and 0.2° in translations and rotations, respectively. Corresponding precision was found lower than 0.5%. These findings render the target locating subsystem of the CyberKnife capable of accurately registering the patient to treatment position and monitoring patient's movement during treatment delivery. © 2009 IOP Publishing Ltd and SISSA.

Cite

CITATION STYLE

APA

Pantelis, E., Petrokokkinos, L., & Antypas, C. (2009). Image guidance quality assurance of a G4 CyberKnife robotic stereotactic radiosurgery system. Journal of Instrumentation, 4(5). https://doi.org/10.1088/1748-0221/4/05/P05009

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free