Abstract
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.
Original language | English (US) |
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Pages (from-to) | 3128-3131 |
Number of pages | 4 |
Journal | Medical physics |
Volume | 32 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2005 |
ASJC Scopus subject areas
- Biophysics
- Radiology Nuclear Medicine and imaging