BACKGROUND

Technological Field

The present invention relates to an image display apparatus and radiation imaging system including such image display apparatus.

Description of the Related Art

When a radiation image is imaged, failure can be seen in generating a suitable radiation image due to mistakes in setting the imaging condition performed in advance and positioning, or the patient moving the body (hereinafter referred to as failure). Usually in such case, the generated radiation images are considered to be images which cannot be supplied for diagnosis (hereinafter referred to as failure image) and imaging is usually performed again.

Unlike failure in normal imaging using visible light in which failure images are easily deleted, in the field of imaging radiation images, the image data of the failure images are rarely deleted in order to reduce unnecessary exposure to the patient as much as possible. For example, the failure images are used to analyze the reason for the failure (JP 2016-186736) or are stored with the reason for the failure (JP 2017-035294, JP 2017-144075). As described above, failure images are used to help improve future imaging.

There are many applications in the field of techniques for management of failure images to be able to confirm the failure images on the screen for the purpose of reducing similar failures in the next opportunity of imaging.

Lately, imaging of dynamic images including a plurality of frames is performed using a radiation imaging apparatus which can repeatedly generate image data within a short period of time. However, failure in such imaging of the dynamic image may occur due to the subject moving during the imaging.

Further, in the failure image of the dynamic image, all of the plurality of frames included in the dynamic image are not failures. Therefore, it is difficult to determine with one glance the reason why the dynamic image is considered to be a failure.

However, the techniques described in JP 2016-186736, JP 2017-035294, and JP 2017-144075 are for failure images in static images. Therefore, there is a necessity for improvement to make it easier to determine the reason for failure when the failure images of dynamic image are displayed.

SUMMARY

An object of the present invention is to be able to determine the reason for failure in the failure image of the dynamic image or the moving image easily as determining in the failure image of the static image when the user is confirming the failure images.

To achieve at least one of the abovementioned objects, according to an aspect of the present invention, an image display apparatus reflecting one aspect of the present invention includes a display which can display an image; and a hardware processor, wherein, the hardware processor obtains image data of a dynamic image or a moving image including a plurality of frames generated by a radiation imaging apparatus, and the hardware processor displays on the display as a failure image at least one failure frame included in the dynamic image or the moving image based on the obtained image data or analyzed image data obtained by analyzing the image data, the failure frame including a reason why the dynamic image or the moving image cannot be provided for diagnosis.

