[A system of digital analysis for the diagnosis of vascular pathologies of the fundus oculi]. / Sistema tsifrovogo analiza dlia diagnostiki sosudistoi patologii glaznogo dna..

A diagnostic tools' set was worked out for the digital analysis of eye-fundus images; it comprises a retinophot and a digital camera adapted to it as well as a computer system and a special soft. A new mathematical model of a fragment of the ocular main microcirculation vessel and the below related global diagnostic parameters of the vascular system were elaborated: mean diameter, deviation from linearity, image acutance, fluctuations' amplitude for thickness and route, and sinuosity of thickness and route. The system of eye-fundus image processing provides for precising a nature of changes in vascular thickness along the route and for assessing the local diameter by using the vascular profile; it can also be used for determining the angle of vessels' branching. A set of expert diagnostic etalons was set up for vascular pathologies of the eye fundus and an appropriate database was created. The advantages of the designed system are: the possibility to use it comprehensively in clinical practice, less time needed to make and to analyze the eye-fundus images, a higher accuracy in determining the local vascular diameter, the possibility to perform simultaneously an analysis of diagnostic signs of retinal vessels on the basis of using a radically new approach towards assessing the vascular system ("tracing-type isolation of segments"), a higher diagnostic efficiency, the possibility to perform the differential diagnosis and the capability of preserving data without any limitations by volume and store duration time.

[A new method for analyzing fluorescein angiograms by using a computer technic]. / Novyi metod analiz fliuorestsentnykh angiogram s primeneniem komp'iuternoi tekhniki.

A new method is proposed for interpretation of fluorescence angiograms by means of computers. The system of analysis of images on the basis of a computer SM-1420 and original program provision was used. Certain methods of fluorogram analysis are discussed. The analysis of curves of fluorescence dilution allowed to detect and quantitatively determine disturbances in arterial blood circulation in pathology of venous circulation. A modified method of profile densitograms is proposed for quantitative determination of changes in the foveal vascular zone. Element-by-element treatment used for quantitative transfiguration of images allowed to reveal the concerned details of the eye fundus images.