Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 13, 2007
Patent Application Number
11017257
Date Filed
December 20, 2004
Patent Primary Examiner
Patent abstract
A method of calculating an exposure a patient receives during radiography includes retrieving a value of a dose rate, which is associated with a value of the tube voltage of an X-ray tube, from a first lookup table that is created in advance, retrieving a value of an area of an X-ray field, which is associated with a value indicating the positions of blades included in a collimator that limits a range of X-ray radiation, from a second lookup table that is created in advance, and calculating the product of the dose rate, the area of the X-ray field, the tube current of said X-ray tube, and an X-irradiation time.
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