X-RAY DIAGNOSING DEVICE

X-ray diagnostic apparatus is disclosed having a video camera, at least one image memory, a differential stage to produce substraction images by forming the difference between a stored video signal and a video signal chronologically following the former signal, an evaluation circuit for the time eva...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HANSU DEIITAA UORUFU, KURAUSU FUINKURAA
Format:	Patent
Sprache:	eng
Schlagworte:	DIAGNOSIS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HUMAN NECESSITIES HYGIENE IDENTIFICATION INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEDICAL OR VETERINARY SCIENCE PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SURGERY TESTING
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Beschreibung
Zusammenfassung:	X-ray diagnostic apparatus is disclosed having a video camera, at least one image memory, a differential stage to produce substraction images by forming the difference between a stored video signal and a video signal chronologically following the former signal, an evaluation circuit for the time evaluation of changes in the subtraction images, and a video monitor. The evaluation circuit includes a time memory for storing information about the chronological flow of the radiographic contrast medium. The evaluation circuit also includes an additional circuit that repeatedly scans the information stored in the time memory and reproduces only those of the image points on the monitor whose information meet a specified criterion. The value of this criterion is increased step-by-step.