The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1998
Filed:
Dec. 06, 1996
Takeo Nabatame, Tochigi, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A plurality of axial images covering a region of interest in a subject to be treated are scanned and voxel data of the subject are produced from the axial images. The provisional location of an isocenter and the direction of radiation are determined over the axial images. A DRR of the subject viewed from the source of radiation is developed in accordance with the provisional isocenter location, the radiating direction, and the distance between the isocenter and the radiation source. The DRR is displayed together with three cross section images which represent an isocenter plane including the isocenter and arranged vertical to a line extending between the isocenter and the radiation source, a gantry rotation plane including the isocenter, and a plane including the isocenter and arranged vertical to both the isocenter plane and the gantry rotation plane. Each of the three cross section images indicates cross-hair ROI representing the other two planes and a cross-hair ROI representing the direction of radiation. The field of radiation is then determined over the three cross section images or the DRRs. The three cross section images and the DRRs can be updated in response to shift and rotation of the cross-hair ROIs.