METHOD FOR CONTROLLING X-RAY IMAGE DIAGNOSIS APPARATUS AND X-RAY GENERATION DEVICE

摘要

To provide a method for controlling an X-ray image diagnostic apparatus and an X-ray generation device equipped with an ABS system tracking movement of an object position without an operator performing setting operation for a region of interest (ROI), the determination condition storage unit (6i) storing ROI position determination conditions in which image statistical information is used for defining conditions to determine a position of an ROI in an X-ray image out of plural blocks generated by dividing the X-ray image into plural regions, the first block statistical information calculation unit (6f) calculating the image statistical information for each of plural blocks, and the region-of-interest position selection unit (6g) selecting a block that serves as an ROI from among plural blocks using the ROI position determination conditions and the image statistical information of each block are provided. A feedback value to be used in controlling the brightness value of the ROI is calculated based on the brightness value of the ROI, and irradiation conditions are determined so that the feedback value reaches a target brightness value.

主权项

1. An X-ray image diagnostic apparatus comprising:
an X-ray generating device generating an X-ray; an X-ray detector detecting the X-ray transmitted through an object and outputting a transmission X-ray signal; an image generation unit generating an X-ray image of the object based on the transmission X-ray signal; a block generation unit generating plural blocks by dividing the X-ray image into plural regions; and a histogram generation unit generating a histogram showing distribution of brightness values for each of the plural blocks, a region-of-interest position selection unit selecting a block serving as a region of interest from among the plural blocks using predetermined region-of-interest position determination conditions and histograms of the respective blocks; a feedback value calculation unit calculating a feedback value used for controlling a brightness value of the region of interest based on a brightness value of a block selected as the region of interest; an irradiation condition determining unit determining irradiation conditions of the X-ray so that the feedback value reaches a predetermined target brightness value; and an image display device displaying the X-ray image.