[A system of digital analysis for the diagnosis of vascular pathologies of the fundus oculi].
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.
Branchevskiĭ
S L
SL
Gavrilova
N A
NA
Il'iasova
N Iu
NIu
Khramov
A G
AG
D019992:Databases as Topic; D003930:Diabetic Retinopathy / Q000175:diagnosis; D003937:Diagnosis, Differential; D005123:Eye / Q000098:blood supply; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008833:Microcirculation; D008962:Models, Theoretical; D009887:Ophthalmoscopy; D012164:Retinal Diseases / Q000175:diagnosis*; D012171:Retinal Vessels; D012984:Software