Title: Television radiation imaging system and method

• Summary
• Claims
• Description
• View all

Abstract: A radiation imaging system and method is disclosed for producing an enhanced television image from a light image produced by an image intensifier tube having an unusually large output face and corresponding to a pattern of penetrative radiation from a subject. A source directs radiation such as X-rays through the subject and the image tube converts the emergent radiation pattern to a corresponding visible light image at an output phosphor. A television apparatus including a pickup tube views the output light image at a tube input face by way of a lens assembly and converts the light image to electrical, including video, signals. A television monitor reconverts the electrical signals to a visible television image of enhanced quality representing the pattern of radiation from the subject. The illuminated portion of the image tube output phosphor is similar in size and has the same shape as the input face of the television pickup tube. A particularly advantageous lead oxide target vidicon television pickup tube is used. The system includes a video enhancer circuit which emphasizes detail of the television image represented by specific frequency components of the video signals by affecting the magnitudes of the variation of those video signals having a frequency of predetermined value, relative to the lower frequency components.


Do you think this is a good invention? Vote now: