X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2005-06-07
2005-06-07
Church, Craig E. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S207000
Reexamination Certificate
active
06904125
ABSTRACT:
A phantom for evaluating nondosimetric functions in radiation therapy installation having a patient couch and a gantry with a head thereon for generating a multi-leaf collimated beam, wherein the beam is directed toward the couch at an orientation dictated by relative orientations of the couch and gantry. The phantom comprises a base adapted for disposition on the couch, and a component mounted to the base for rotation in accordance with the relative orientations of the couch and gantry. The component incorporates a plurality of known geometrical structures corresponding in shape to the multi-leaf collimated beam. Upon imaging the component, nondosimetric functions may be evaluated by comparing the known geometrical structures with images of the structures and identifying discrepancies therebetween.
REFERENCES:
patent: 4672212 (1987-06-01), Brahme
patent: 4987309 (1991-01-01), Klasen et al.
patent: 5438991 (1995-08-01), Yu et al.
patent: 5818902 (1998-10-01), Yu
patent: 6052430 (2000-04-01), Siochi et al.
patent: 6052436 (2000-04-01), Huttner et al.
patent: 6260999 (2001-07-01), Wofford et al.
patent: 6330300 (2001-12-01), Siochi
patent: 6349129 (2002-02-01), Siochi
patent: 6449335 (2002-09-01), Siochi
patent: 6459769 (2002-10-01), Cosman
patent: 6577707 (2003-06-01), Siochi
Ayyanger, K., et al., Experimental Verification of a Three-Dimensional Dose Calculation Algorithm Using A Specially Designed Heterogeneous Phantom, Med. Phys. 20, 1993, pp. 325-329.
AAPM Radiation Therapy Committee Task Group 53: Quality Assurance for Clinical Radiotherapy Treatment Planning, Benedict Frass et al.; Med. Phys. 25(10), Oct. 1998, pp. 1773-1829.
Craig et al., A Quality Assurance Phantom for Three-Dimensional Radiation Treatment Planning, Int. J. Radiation Oncology Biol. Phys., vol. 44, No. 4, pp. 955-966, 1999.
McNiven Andrea Leigh
Van Dyk Jake
Cancer Care Ontario
Church Craig E.
Weiss Philip M.
Weiss & Weiss
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