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Biomedical subjects

B N Dmitrienkov

Publications and source records attributed to B N Dmitrienkov.

At least 19 recordsLinked to original sources
PubMed1989

[The diagnostic importance of a quantitative evaluation of gamma scintigraphy in Perthes' disease in children].

The investigation was performed in 28 children with Perthes disease, stages I-III. The comparison of visual and quantitative assessment of gamma-scintigrams has shown that the use of the coefficient of differential accumulation as a criterion of asymmetry of RP accumulation in the hip joints makes it possible to increase 4-fold the effectiveness of diagnosis at stage I of Perthes disease, the most difficult one for x-ray diagnosis. At more advanced stages neither visual nor quantitative assessment of gamma-scintigrams is superior to roentgenography. Therefore the use of gamma-scintigraphy seems appropriate in Perthes disease at stage I.

Child↗
PubMed1987

[Functional computer images in the evaluation of the status of the renal parenchyma in children].

The paper is concerned with a detailed description of an algorithm for picturing functional imaging of the kidneys based on the calculation of parenchymal transport time (PTT). The authors discuss the results obtained in a group of patients aged 4 to 14 with conditional normal indices. The method permits quantitative and qualitative assessment of the function of the minimum amount of nephrons of each kidney and facilitates an analysis of gamma scintigraphy results. Clinical importance of the method is discussed.

Adolescent↗
PubMed1985

[Potentialities of gamma-scintigraphy in the diagnosis of Meckel's diverticulum in children].

Altogether 84 children aged 1 to 15 were examined. The index of 99mTc-pertechnetate relative accumulation in the ectopic gastric mucosa was proposed to be used to objectify and improve the quality of diagnosis of Meckel's diverticulum. The index over 42% was shown to be typical of Meckel's diverticulum and it can be used for automated diagnosis of the disease. The use of the above quantitative index made it possible to reject 20% of false positive results obtained at visual interpretation of scintigrams.

Adolescent↗
PubMed1984

[Radionuclide diagnosis of acute hematogenous osteomyelitis of the long tubular bones in children].

Computerized osteoscintigrams of 54 children with osseous diseases (osteomyelitis, osseous tumors and arthritis) were analysed. 99mTc-pyrophosphate elevated accumulation in inflammatory processes was observed not only in the pathological zone but also in the epiphyses of the affected limb. The accumulation of the radiopharmaceutical agent calculated in several zones of the affected and healthy limbs provides for significant differential diagnosis of acute hematogenic osteomyelitis. In case of bone symmetric involvement by an inflammatory process and in osteomyelitis of the flat bones and the vertebral column the potentialities of the method are limited.

Acute Disease↗
PubMed1983

[Radiorenoangiography in the study of renal blood circulation in children].

The renal blood circulation was studied in 17 children aged 3 to 14 using a method of adaptive simulation of the organ blood flow. The main condition for radiorenoangiography is to place correctly a gamma-chamber of the heart, lungs and kidneys in the field of vision of the crystal. It is a requisite condition for the calculation of absolute and relative renal perfusion depending on the cardiac ejection. If a patient's body size does not make it possible to have the heart and kidneys in the field of vision of the collimator at a time, one can choose the spleen as the "model" organ. The analysis of angiographic results has shown that the share of the cardiac ejection which is responsible for the renal circulation and organ function respectively, is quite a stable value that is not associated with a patient's age and body mass. Irrespective of the state of the central hemodynamics and a patient's age, the most objective information on renal perfusion proceeds from an analysis of relative indices (or perfusion indices) that are calculated on the basis of the cardiac ejection expressed in percentage (or another model organ).

Adolescent↗
PubMed1979

[Modified technic of puncture and catheterization of the femoral vessels in children and its effect on blood circulation to the extremities].

A modified technique of puncture and catheterization of the femoral vessels in children and a detailed description of the stages of the examination are presented. An analysis of 350 angiographies with the use of the modified puncture and catheterization technique in children aged from 1 month to 15 years was carried out. Technical errors were noted in 16 children (4.3%) and complications in 3 (0.85%). The presented observations prove that the given modification of the catheterization technique is not a very traumatic one and allows to avoid many undesirable complications which may arise especially at the stage of mastering the described method.

Catheterization↗