| 摘要 |
An apparatus and a method for radiation tomographic imaging, and an imaging apparatus are provided to reduce noises, enhance image quality, to reduce irradiation amount, and to elongate lifetime of the apparatus by filtering plural image data acquired at plural positions along with an image taking surface. A scan gantry(2) includes an X-ray tube(21), a collimator(22), an X-ray detector(23), a data collecting section(24), an X-ray controller(25), a collimator controller(26), a rotating section(27), and a rotation controller(28). The X-ray tube(21) emits X-rays of predetermined intensity based on a control signal from the X-ray controller(25). The collimator(22) forms the X-rays emitted from the X-ray tube(21) into a fan beam that has a fan-like shape having a certain width and a certain thickness. The X-ray controller(25) outputs a control signal to the X-ray tube(21) in response to a control signal from a central processing apparatus in an operation console(3) to control X-ray emission. The collimator controller(26) outputs a control signal to the collimator(22) in response to a control signal from the central processing apparatus. An imaging controller(41) outputs, in response to instructions supplied from the input device(32), a control signal to the imaging table(4). The imaging controller(41) outputs a control signal to the scan gantry(2) in response to instructions supplied from an input device. An image producer(42) generates image data representing an imaging plane based on detected X-rays. The image producer(42) performs image reconstruction based on detected data for a plurality of views collected by the data collecting section(24) to generate multi-slice image data. |
