| 摘要 |
PURPOSE:To provide an X-ray television device which enable monitor pictures with good quality to be constantly obtained during the examination by causing a picture signal to pass through a picture adding circuit during fluoroscopy photographing and causing a picture signal not to pass through the picture adding circuit during cinematography by installing a change-over device. CONSTITUTION:An image signal delivered from a T.V. camera (TC) through a T.V.-camera-controlling device (TCC) is entered into the input terminal 1 of a picture-processing device (IP), and entered into an analogue digital converter (ADC) 3. The image signal subjected to digital conversion in the ADC 3 is then entered into an IC-memory adding circuit 4 and stored in it as a digital signal before being added. On the other hand, when a cinematographing mode is selected by a mode changeover switch (SW) in order to carry out cimetatographing or the like after a catheter is caused to reach the region to be examined, a control signal is entered into a control-signal input terminal 8 to cause a current to flow through the coil of a signal change-over device 2 and to connect its terminals (a) and (c) to each other through electromagnetic effect thereby delivering an image signal to a T.V. monitor (MT) without causing the image signal to pass through a picture adding circuit 6. |
