Abstract: A verification device for robotic radiotherapy provides beam imaging displaced from an isocenter of a treatment plan to isolate individual beams for comparison to a baseline image to deduce convergence or target deviations in each of three dimensions over the area of a planar imager and perpendicular to that area.
Abstract: Segmentations used to describe structures to be treated by radiotherapy are evaluated by converting the segmentations into volume models and examining volume elements that are extra or missing in the volume model of the second segmentation with respect to the volume model of the first segmentation. This characterization of volume elements may be displayed graphically to show differences in segmentations for training or evaluation purposes and may be quantified by a metric method tallying volume elements as optionally weighted by distance from volume elements shared by the segmentation.
Type:
Grant
Filed:
May 29, 2009
Date of Patent:
December 20, 2011
Assignee:
Standard Imaging, Inc.
Inventors:
Benjamin E. Nelms, Neal R. Miller, Jeffrey H. Manion
Abstract: Nested ionization chambers provide independent measurements of a radiation beam that does not fully irradiate the volume of one or both chambers. By mathematically combining these independent measurements, partial volume effects caused by a change in ionization detector calibrations when the full detector volume is not irradiated by the radiation beam, may be decreased, providing more accurate measurement of extremely small radiation beams.
Type:
Grant
Filed:
August 18, 2009
Date of Patent:
October 25, 2011
Assignee:
Standard Imaging, Inc.
Inventors:
Larry A. DeWerd, Brian D. Hooten, Edward W. Neumueller
Abstract: A dose calculator for heavy-ion therapy systems uses a limited number of spread out Bragg peak models obtainable by a particular therapy system, the models which may be adjusted in energy (offset) and dose contribution (treatment time) to produce a unique composite dose having a complex dose profile with limited reduced time.
Type:
Grant
Filed:
November 14, 2008
Date of Patent:
October 4, 2011
Assignee:
Standard Imaging Inc.
Inventors:
John Roy Gentry, Raymond Terry Riddle, Neal Robert Miller
Abstract: An instrument for checking quality of therapeutic x-ray and electron radiation provides modes optimized for both electrons and for photons obtained by physically flipping the unit to interpose the necessary build-up material between the radiation beam and contained detectors. The invention provides an improved method of constructing ionization detectors for improved energy discrimination using such detectors and wire-free operation.
Type:
Grant
Filed:
January 26, 2007
Date of Patent:
December 30, 2008
Assignee:
Standard Imaging, Inc.
Inventors:
Daniel G. Schmidt, Myles L. Sommerfeldt, Kevin L. DeFever, Thomas C. Bonde
Abstract: A stand-alone calculator enables multi energy electron beam treatments with standard single beam electron beam radiotherapy equipment thereby providing improved dose profiles. By employing user defined depth-dose profiles, the calculator may work with a wide variety of existing standard electron beam radiotherapy systems.
Type:
Grant
Filed:
August 4, 2004
Date of Patent:
April 10, 2007
Assignee:
Standard Imaging, Inc.
Inventors:
John R. Gentry, Christopher J. Kubiak, Keith R. Nelson, Bhudatt R. Paliwal, Raymond T. Riddle, Myles L. Sommerfeldt, Richard A. Steeves
Abstract: An instrument for checking quality of therapeutic x-ray and electron radiation provides modes optimized for both electrons and for photons obtained by physically flipping the unit to interpose the necessary build-up material between the radiation beam and contained detectors. The invention provides an improved method of constructing ionization detectors for improved energy discrimination using such detectors and wire-free operation.
Type:
Grant
Filed:
February 9, 2004
Date of Patent:
March 13, 2007
Assignee:
Standard Imaging, Inc.
Inventors:
Daniel G. Schmidt, Myles L. Sommerfeldt, Kevin L. DeFever, Thomas C. Bonde