Stability of a mobile electron linear accelerator system for intraoperative radiation therapy.

Authors:

Med Phys 2005 Oct;32(10):3128-31

Department of Radiation Physics, Division of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA.

The flexibility of mobile electron accelerators, which are designed to be transported to an operating room and plugged into a normal 3-phase outlet, make them ideal for use in intraoperative radiation therapy. However, their transportability may cause trepidation among potential users, who may question the stability of such an accelerator over a period of use. In order to address this issue, we have studied the short-term stability of the Mobetron system over 20 daily quality assurance trials. Variations in output generally varied within +/-2% for the four energies produced by the unit (4, 6, 9, and 12 MeV) and changes in energy produced an equivalent shift of less than 1 mm on the depth-dose curve. Hours of inactivity, with the Mobetron powered on for use either throughout the day or overnight, led to variations in output of about 1%. Finally, we have tested the long-term stability of the absolute dose output of the Mobetron, which showed a change of about 1% per year.

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2044432DOI Listing

Still can't find the full text of the article?

We can help you send a request to the authors directly.
October 2005
10 Reads

Publication Analysis

Top Keywords

intraoperative radiation
8
radiation therapy
8
mobile electron
8
variations output
8
studied short-term
4
mobetron powered
4
issue studied
4
short-term stability
4
stability mobetron
4
system daily
4
mobetron system
4
stability
4
address issue
4
stability accelerator
4
question stability
4
led variations
4
potential users
4
overnight led
4
accelerator period
4
daily quality
4

References

(Supplied by CrossRef)
Intraoperative radiotherapy using a mobile linear electron accelerator: A retroperitoneal sarcoma case
Beddar et al.
J. Appl. Clin. Med. Phys. 2005
Intraoperative radiation therapy using mobile electron linear accelerators: Report of AAPM Radiation Therapy Committee Task Group No. 72
Beddar et al.
Med. Phys.

Similar Publications