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Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
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Characterization of linear accelerator X-ray source size using a laminated beam-spot camera.

Collins Yeboah1

  • 1Department of Medical Physics, Odette Cancer Centre, Toronto, Ontario, Canada. collins.yeboah@sunnybrook.ca

Journal of Applied Clinical Medical Physics
|August 17, 2011
PubMed
Summary

A new camera accurately measures X-ray beam-spot sizes on Siemens accelerators. Beam-spot sizes vary by model, but generally remain stable over time, crucial for radiation therapy quality assurance.

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X-ray Imaging01:24

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...