RADIOGRAPHIC IMAGE DETECTOR, RADIOGRAPHIC IMAGING APPARATUS, RADIOGRAPHIC IMAGING SYSTEM

摘要

The present invention provides a radiographic image detector that may maintain even resolution in 6 directions before and after 3-pixel binning process or 4-pixel binning process. A radiation detector is disposed with plural pixels that have hexagonal shaped pixel regions, arrayed in a honeycomb pattern. Scan lines connected to TFT switches in each of the pixels are disposed one for each of the pixel rows. Grouped scan lines are also disposed one for each of the pixel rows for reading and combining 3 pixels or 4 pixels worth of charges at the same timing for plural pixel groups, each configured from 3 pixels or 4 pixels in a radiation detection element. ON signals are simultaneously sent by the grouped scanned lines to the TFT switches to perform 3-pixel binning or 4-pixel binning.

主权项

1. A radiographic imaging system comprising:
a pressing plate that fixes a breast; a radiation irradiation section that irradiates radiation onto the breast from different imaging angles; a radiation detector that includes a plurality of pixels that are arrayed in a honeycomb pattern, each pixel generating and outputting charges according to the irradiated radiation and having a hexagonal shaped pixel region, the radiation detector outputting a first radiation image of a first resolution formed from image data output from single-pixel units, and a second radiation image of a second resolution lower than the first resolution and formed from image data output from multi-pixel units; a setting section that sets tomosynthesis imaging to be performed in a first mode or a second mode; a control section that, in cases in which the first mode is set, performs tomosynthesis imaging by irradiating radiation from the radiation irradiation section at each imaging angle in a first imaging angle range and outputs a plurality of the first radiation images from the radiation detector, and, in cases in which the second mode is set, performs tomosynthesis imaging by irradiating radiation from the radiation irradiation section at each imaging angle in a second imaging angle range included in the first imaging angle range and narrower than the first imaging angle range and outputs a plurality of the second radiation images from the radiation detector; and a tomographic image generation section that generates a plurality of tomographic images reconstructed with reference to a detection face of the radiation detector based on a plurality of the first radiation images or a plurality of the second radiation images output from the radiation detector.