Measurement of beam-axis displacement from the isocenter during three-dimensional conformal radiosurgery with a micro-multileaf collimator

Etsuo Kunieda; Osamu Kawaguchi; Hidetoshi Saitoh; Tatsuya Fujisaki; Atsuya Takeda; Takatsugu Kawase; Hossain M Deloar; Naoyuki Shigematsu; Atsushi Kubo

doi:10.1016/j.radonc.2003.11.008

Measurement of beam-axis displacement from the isocenter during three-dimensional conformal radiosurgery with a micro-multileaf collimator

Radiother Oncol. 2004 Jan;70(1):45-8. doi: 10.1016/j.radonc.2003.11.008.

Authors

Etsuo Kunieda¹, Osamu Kawaguchi, Hidetoshi Saitoh, Tatsuya Fujisaki, Atsuya Takeda, Takatsugu Kawase, Hossain M Deloar, Naoyuki Shigematsu, Atsushi Kubo

Affiliation

¹ Department of Radiology and Neurosurgery, Keio University, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan.

PMID: 15036851
DOI: 10.1016/j.radonc.2003.11.008

Abstract

We describe the displacement of the beam-axis from the planning isocenter in clinical situations during three-dimensional conformal radiosurgery using an Acculeaf bi-directional micro-multileaf collimator. The displacements were recorded for 64 ports using a video imaging system and a stereotactic arc. The mean displacement was 0.41+/-0.25 mm.

Publication types

Evaluation Study

MeSH terms

Brain Neoplasms / surgery
Humans
Imaging, Three-Dimensional
Radiosurgery / instrumentation*
Radiotherapy, Conformal / instrumentation
Radiotherapy, Conformal / methods*
Stereotaxic Techniques