| 摘要 |
<p>A system and method for control of a video e.g. television camera (40) in an imaging system. The system includes a radiation source (10), an image intensifier tube (16) and associated components e.g. a cine camera (36), a spot film camera (34) and a spot film device (22), for acquiring analog radiation representing images in one or more of several prime analog study modes. Radiation is directed from the source (10) through a subject (18) to the intensifier tube (16) and to selected ones of the analog acquisition components (22.34. 36). As the analog images are acquired, the video camera (40) views the image produced by tube (16) to produce another image, on a monitor (42), in verification that the radiation exposure is of a character suitable for the selected analog image acquisition mode. Sets of representations of camera operating parameters are stored in memory circuitry coupled in control units (44, 50) to the camera (40). Each set of representations corresponds to a different analog study mode, or combination of modes. In response to selection of one or a combination of analog study modes, the corresponding set of camera operating parameters is applied to the camera, in order to optimize camera performance for the particular study mode, or combination of modes, which has been selected. The camera video signal may be suppressed in response to a selection of a slow video camera scan rate for a study mode, while maintaining transmission of synchronization signals from the camera (40) to the monitor (42). </p> |
