RADIATION IMAGING SYSTEM, IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM

RADIATION IMAGING SYSTEM, IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM

A radiation imaging system comprises: an image obtaining unit including a radiation detecting unit in which pixels configured to output signals according to a dose of irradiated radiation are arranged in a two-dimensional area, and configured to obtain a radiation image based on the signals; a corre...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Torii, Sota, Noda, Takeshi
Format: Patent
Sprache:eng
Schlagworte:
DIAGNOSIS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
PICTORIAL COMMUNICATION, e.g. TELEVISION
SURGERY
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Beschreibung
Zusammenfassung:A radiation imaging system comprises: an image obtaining unit including a radiation detecting unit in which pixels configured to output signals according to a dose of irradiated radiation are arranged in a two-dimensional area, and configured to obtain a radiation image based on the signals; a correction unit configured to correct the radiation image using an input/output characteristic of a pixel, which represents a relationship between the dose of radiation on the pixel and the signal output from the pixel and is obtained using gain data based on a plurality of gain images obtained under different doses; and an updating unit configured to update the gain data using an updating coefficient obtained based on the gain data and a gain image newly obtained by the image obtaining unit.