| 摘要 |
In an X-ray device 1 according to the present invention, an imaging position of a pre-image P is corrected on the basis of a correction amount calculated by a correction amount calculation unit 29. The correction amount is calculated on the basis of a distance between a center Ko of a vertebral body region that a characteristic region extraction unit 27 extracts from the pre-image P and a center Po of the pre-image P. When the pre-image is generated, the pre-image is corrected such that the center Ko of the vertebral body region coincides with the center Po of the pre-image P. Additionally, a pre-image generation instruction button 33a is depressed to generate the pre-image P by single irradiation of a pulse X-ray from an X-ray tube 5. Regardless of the depression time, the X-ray irradiation time is set to be a prescribed short time at all times so that X-ray irradiation time can be made to be a prescribed short time reliably with a simple operation. As a result, when setting the imaging region of an X-ray image for measurement, the time for X-ray irradiation can be reduced, minimizing exposure of a subject. Further, since the imaging position of the pre-image P can be corrected quickly, the time required to capture the X-ray image for measurement can be reduced. |
