Patent ID: 8988517
Filing Date: 2015-03-24
Classification: A61B,G01T,H04N

Abstract:
1. An X-ray image pickup system for medical use which has at least two imaging modes, comprising a solid-state image pickup apparatus, where M<N and M and N are integers greater than or equal to 2, which takes an X-ray image while moving around a jaw portion of a test subject, wherein, the solid-state image pickup apparatus has a photodetecting section which is formed such that M×N pixels respectively including photodiodes are two-dimensionally arrayed in M rows and N columns, the photodetecting section has a rectangular photosensitive surface whose longitudinal direction is the row direction, N readout wirings which are installed on the respective columns, and connected to the photodiodes included in the pixels on corresponding columns via readout switches, a signal readout section which holds voltage values corresponding to quantities of charges input via the readout wirings, and outputs the holding voltage values in series, a controlling section which controls switching operations of the readout switches of the respective pixels, and controls outputting operations of voltage values in the signal readout section, to output the voltage values corresponding to the quantities of charges generated in the photodiodes of the respective pixels from the signal readout section, and a scintillator which generates a scintillation light according to an incident X-ray to convert the X-ray image into an optical image, and outputs the optical image to the photodetecting section, the X-ray image pickup system for medical use further comprises a rotation controlling section which supports the solid-state image pickup apparatus rotatably around an axis line vertical to the photosensitive surface, and controls a rotation angle of the solid-state image pickup apparatus such that the longitudinal direction of the photodetecting section is made parallel to a moving direction of the solid-state image pickup apparatus in one imaging mode of the two imaging modes, and the longitudinal direction of the photodetecting section is made perpendicular to the moving direction of the solid-state image pickup apparatus in the other imaging mode of the two imaging modes.