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The task group (TG) for quality assurance of medical accelerators was constituted by the American Association of Physicists in Medicine's Science Council under the direction of the Radiation Therapy Committee and the Quality Assurance and Outcome Improvement Subcommittee. The task group (TG-142) had two main charges. First to update, as needed,(More)
  • Cruz-Neira, C Sandin, +14 authors Goebel M
  • 1994
[16] Tsai R., A versatile camera calibration technique for high-accuracy 3d machine vision metrology using off-the-shelf tv cameras and lenses. 10 Figure 10 shows a reconstruction of the Cyberstage view during the Schlosstag scenario demonstration. We integrated the remote person into an operating theater. The remote participant was giving some information(More)
The characteristics of an Elekta Precise treatment machine with a gating interface were investigated. Three detectors were used: a Farmer ionization chamber, a MatriXX ionization chamber array and an in-house, single pulse-measurement ionization chamber (IVC). Measurements were made of dosimetric accuracy, flatness and symmetry characteristics and duty(More)
  • Cruz-Neira, C Sandin, +13 authors Dai F
  • 1998
As feedback information a video signal from an infra-red camera out of the Cyberstage room was send to a monitor in the Blue Room. Thus, the person in the blue room was able to have a view of the virtual objects in Cyberstage and also of his own video image which was included as video texture within the virtual world. The audio connections and equipment are(More)
PURPOSE Knowing the contribution of neutron to collateral effects in treatments is both a complex and a mandatory task. This work aims to present an operative procedure for neutron estimates in any facility using a neutron digital detector. METHODS The authors' previous work established a linear relationship between the total second cancer risk due to(More)
The characteristics of an Elekta Precise treatment machine with a gating interface were investigated. Three detectors were used: a Farmer ionisation chamber; a MatriXX ionisation chamber array and an in-house, single pulse-measurement ionisation chamber (IVC). Measurements were made of dosimetric accuracy, flatness and symmetry characteristics and duty(More)
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