| 摘要 |
The present invention provides a method for adjusting a z-directional position and a computed tomography scanning apparatus. A first embodiment of the present invention provides the method for adjusting the z-directional position, comprising the steps of: acquiring the z-directional position of a collimator corresponding to each combination among collimation, bulb tube voltage and rotating time during rotation of an X-ray tube; storing an indication of the z-directional position; and adjusting the z-directional position of a collimator according to the indication and a scan protocol to be adopted. The present invention previously stores optimal z-directional positions for each combination the collimation during the rotation, the bulb tube voltage during the rotation and the rotation time, thereby may directly adjust the collimator to an optimal z-directional position according to the optimal z-directional position and the scan protocol to be adopted and so may enhance an image quality. |
