ANGIOGRAPHIC METHOD

Angiographic process utilizing contrast mediums for the roentgenographic representation of living organ vessels, especially human, wherein a blank photograph is made of a vascular region to be visualized, a contrast medium is infused into said vascular region, a photograph of the same region is prod...

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1. Verfasser:	LOHSE, KARL-HEINZ
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY DIAGNOSIS ELECTROGRAPHY HOLOGRAPHY HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS SURGERY
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creator	LOHSE, KARL-HEINZ
description	Angiographic process utilizing contrast mediums for the roentgenographic representation of living organ vessels, especially human, wherein a blank photograph is made of a vascular region to be visualized, a contrast medium is infused into said vascular region, a photograph of the same region is produced after a given time interval, for example 0.5 seconds, and a visual image is produced by photographic subtraction of the two pictures, whereby the quantity of the contrast medium and the X-ray dose used to produce the pictures are reduced by photographically equivalent factors to such an extent that the desired information lies in a density range (blackening range) unsuited to direct observation, and whereby in the process of photographic subtraction the density range containing the information is extracted and transposed onto a visual density range suitable for direct observation of the image.
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language	eng ; ger
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subjects	AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY DIAGNOSIS ELECTROGRAPHY HOLOGRAPHY HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS SURGERY
title	ANGIOGRAPHIC METHOD
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