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:
Mar. 01, 1994
Filed:
Apr. 04, 1991
Applicant:
Inventors:
Masaaki Kurokawa, Hyogo, JP;
Masataka Nagao, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
36441326 ; 36441325 ; 36441327 ; 250263 ;
Abstract
The radiotherapy treatment planning system is for calculating the radiation dose to be absorbed by an object to be irradiated, prior to radiotherapy. The distribution of contribution output unit outputs the distribution of contribution showing the contribution rates of scattered beam or electron beam to an observational point in each point of the object to be irradiated. The arithmetic unit calculates the absorbed dose of the observational point due to the scattered beam or the absorbed dose due to the electron beam, by summing up each contribution rate multiplied with the electron density at the point corresponding thereto.