| 摘要 |
In a computed tomography and a method for operating a computed tomography unit, in order to scan an object under investigation a radiation source emits a pyramid-shaped X-ray beam, which penetrates through the object under examination and strikes a radiation detector. The computer tomography unit has an optical recording device which, during the scanning, records optical images of a partial surface of the object, which faces the X-ray source and through which the pyramid-shaped X-ray beam has penetrated. An image of the surface of the object under examination is constructed from optical images obtained in this manner this image is assigned to a sectional image obtained by means of the scan, or to an overview image.
|
