[Value of bone densitometry in the determination of vertebral mineral density in participants of the clean-up after Chernobyl accident].

Scanning osteodensitometry helped to study mineral saturation of lumbar vertebra in individuals who liquidated Chernobyl accident consequences. Bone mineral density appeared to depend on radiation dose obtained by the examinees. High risk of osteoporosis revealed in the examinees who participated in the liquidation in 1986.

[Osteopenic syndrome in liquidators of the aftereffects of the accident at the Chernobyl power plant].

Bone system was examined in 112 liquidators; in 71 of these osseous tissue density was studied by osseous densitometer using bienergetic x-ray absorptiometry and in 45 x-ray examinations, analyses of biochemical and hormonal parameters were carried out. Spinal painful syndrome was detected in 61 to 82% of the examinees. For analysis of densitometric and x-ray parameters the liquidators were divided into 2 groups: group 1 included those who worked at the power plant in 1986 (55%) and group 2 were those who worked there in 1987-1989.

[Digital bone densitometry].

Normal values of bone mineral composition were defined, based on examinations of 600 male and female volunteers of various age groups by digital roentgenodensitometry. The mineral compactness was found reduced in the patients with endocrine diseases, in subjects who participated in liquidation of the Chernobyl power plant accident aftereffects, and in those suffering from skeletal pains. The authors emphasize the value of digital roentgenodensitometry as a method for monitoring the efficacy of treatment of patients with endocrine diseases and chronic renal insufficiency.

[Bone tissue in patients with hyperprolactinemic hypogonadism].

Sixteen women with hyperprolactinemia were examined for Ca metabolism, osseous metabolism, mineral saturation of bone tissue in the thoracic portion of the spine and radius. Lowered mineral saturation of the thoracic vertebrae was detected in 69% of the examinees, that of the distal segment of the radius in 44%. Reduction of the mineral saturation of the spine was in negative correlation with the blood prolactin level and length of amenorrhea.

[Comparison of diagnostic methods for osteoporosis in endogenous hypercorticism].

The informative value of diagnosis of osteoporosis in 53 patients with Itsenko-Cushing disease was assessed by visual estimation of radiograms of the axial skeleton, standard x-ray densitometry of the phalanges of the thumbs and single-photon absorptiometry of the distal parts of antebrachial bones. Diagnosis of osteoporosis and its evaluation over time were shown to be accurate in combination of visual assessment of radiograms of the axial skeleton with standard x-ray densitometry of the peripheral parts of the skeleton. Single-photon absorptiometry revealed no decrease in the level of the osseous mineral in the forearm of patients with endogenous hypercorticoidism.

[Skeletal scintigraphy in hemangioma of the bones].

The results of scintigraphic investigations of the skeleton of 76 bone hemangioma patients were analyzed to study the informative value of this type of investigation and to determine the efficacy of its use during establishing diagnosis and dynamic observation. The probability of detection of bone hemangiomas using scintigraphy of the skeleton with 99m Tc labeled osteotropic agents was shown to be in direct relation to the biological activity of hemangioma, its site and resolution of radiodiagnostic apparatus. The utilization of scintigraphy of the skeleton in addition to x-ray investigation permits clarification of the nature of lesion (benign or malignant), the biological activity of hemangiomas, control of the time course of a pathological process and efficacy of therapy of biologically active hemangiomas.

[X-ray features of fibrous osteodystrophy and osteomalacia in patients with chronic renal insufficiency under present-day treatment].

The authors present the results of clinicoroentgenological and biochemical investigations in 102 patients with chronic renal insufficiency after hemodialysis and in 76 patients after kidney transplantation. The nature of secondary hyperparathyroid fibrous osteodystrophy and osteomalacia as main symptoms of nephrogenic osteodystrophy (NO), their interrelation and correlation are analysed. Of 178 patients pathological changes of the bone system were revealed in 94 (52.