| 摘要 |
In X-rays photography or like techniques there is used a tower stand (2) which carries on an outwardly projecting arm (5) a radiation source (6) which can move in the X-, Y- and Z-directions and can rotate about a horizontal axis. A receptor holder (7) capable of moving in the X- and Y-direction is located beneath the patient examination table (1). The act of placing in the receptor holder (7) a holder (15) for a secondary receptor lying in the vertical plane for horizontal ray path results automatically in movement of the radiation source (6) in the X-, Y- and/or Z-direction and rotation of the radiation source about the horizontal axis, to a basic setting position for horizontal, centered ray path to the secondary image receptor. Various types of secondary receptor holder (15) can be applied. The tower stand also carries a tertiary receptor holder (9). |
