Patent ID: 6621917
Filing Date: 2003-09-16
Classification: A61B,Y10S

Abstract:
Device for the investigation of biological vessels, preferably of retinal vessels, in which at least one vessel section is present as an electronic image or as a series of electronic images, which is supplied from a photoelectric receiving device to an evaluation unit, whereby the evaluation unit contains an image manipulation unit (BM) for section by section digitizing or blanking of at least one measured window in the image created by the photoelectric receiving unit and for identification of the image and of the position of the measured window in the image; a control unit (SS) to create the image identifier and the measured window coordinates which describe the position and geometry of the measured window in the image; image-processing or signal-processing computing and storage units (BV) and output units (EP) for display of the image and/or display of measured values and/or of measured results,whereby the arrangement contains means by which the component of the measuring window contains in the direction of the expanse of the vessel at least so many pixel positions that are detected that the inclined position of the vessel in relation to the measuring direction can be determined and the vessel diameter can be resolved in a manner selected from the group consisting of in terms of location by at least two vessel diameter values of directly neighboring vessel segments of the same vessel, and in terms of time by at least two vessel diameter values per the same vessel segment between different images.