[Ultrasound monitoring of the course of uveal melanoma].

Fifty-two persons were examined to define a role of a current ultrasound study during monitoring the natural history of uveal melanoma. The B-mode ultrasonography, color Doppler imaging and power Doppler and Doppler spectral study were applied. Ultrasound densitometry was used to estimate 326 sonograms imaging melanoma. Control studies assessed the time course of metric, hemodynamic, vascular, and densitometric changes of the tumor during organ-saving treatment. A number of ultrasound criteria for the positive and negative course of the disease were defined. Emphasis is focused on the sign that turned out to be most resistant to medical measures. The author shows it necessary to comprehensively use all currently available ultrasound diagnostic techniques for effective monitoring the state of uveal melanoma.

[Ultrasonography of intraocular pathology in a pediatric oncology clinic]. / Ul'trasonografiia intraokuliarnoi patologii v detskoi onkoklinike.

Forty-seven children with the intraocular acoustic effect of "plus-tissue", which was preconditioned by retinoblastoma, Coats' disease, retinopathy of the scarring stage in premature newborns and differentetiology fibroses of the vitreous body, underwent ultrasound examinations, including color Doppler mapping and pulse Doppler-graphy, for the purpose of promoting the differentiated diagnostics. Determinative ultrasonographic criteria were specified for each of the mentioned pathology states; a special significance of Doppler tools is pointed out in detecting a nature of the neovascular network, in identifying a.hyaloidea present in premature newborns and also present in retinal detachment with profound vitreous changes.

[Vascular network of choroid melanoma as shown by triple ultrasonic examination]. / Osobennosti sosudistoi seti melanomy khorioidei po rezul'tatam tripleksnogo ul'trazvukovogo issledovaniia.

Twenty-four patients (24 eyes) with choroid melanoma were examined by triplex ultrasonic examination (gray-scale scanning in the real time mode, color Doppler mapping, and pulse wave dopplerography). All tumors possessed individual vascular network with larger vessels with higher bloodflow velocity at the periphery in comparison with the center of the tumor. A large feeding vessel growing into the tumor at the periphery along the internal (facing the vitreous body) surface of the tumor was detected in the overwhelming majority of cases.

[Changes in the ocular and orbital blood flow in patients with retinal detachment treated surgically]. / Izmeneniia krovotoka v sosudakh glaza i orbity u bol'nykh s otsloikoi setchatki pri ee operativnom lechenii.

Sixty-eight patients with dystrophic regmatogenic detachment of the retina and 78 controls with different clinical refraction were examined by triplex scanning of the eyeball. Bloodflow parameters in the orbital artery, central retinal artery, posterior short ciliary arteries were evaluated before and in various periods after the operation. Characteristics of the bloodflow in the ocular and orbital arteries in myopia, detachment of the retina in the presence of myopic and emmetropic refraction, proliferative vitreoretinopathy of various degrees and patterns of its progress during the postoperative period were determined and time course of bloodflow parameters evaluated in some types of interventions. Hemodynamic parameters of the orbital artery and posterior short ciliary arteries were significantly related to the degree of proliferative vitreoretinopathy and its postoperative progress.

[Quantitative evaluation of ultrasonic images in differential diagnosis of bulky intraocular formations]. / Kolichestvennaia otsenka ul'trazvukovykh izobrazhenii v differentsisal'noi diagnostike ob''emnykh vnutriglaznykh obrazovanii.

A method for evaluating ultrasonic gray-scale images by plotting amplitude histograms is proposed. From amplitude histogram analysis, echogenicity and homogeneity indexes of the examined tissues were estimated. A total of 213 images of bulky intraocular formations in 58 patients were analyzed by this method. Confidence intervals of the image echogenecity and homogeneity of choroidal melanomas did not overlap the confidence intervals of the above indexes of images of pseudotumorous intraocular formations. This permits using the homogeneity and echogenicity indexes as a test for differential diagnosis of bulky intraocular formations.