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Biomedical subjects

G D Rokhlin

Publications and source records attributed to G D Rokhlin.

At least 19 recordsLinked to original sources
PubMed1996

[Age-related changes in the intervertebral disks based on magnetic resonance tomographic data].

Lumber region of vertebral column was studied in different age people using magnetic resonance tomography (MRF). Intensity of vertebral discs signals and those from adjacent vertebral bodies was evaluated both visually and quantitatively by graphic registration of magnetic resonance signals. Processes of disk dehydration, characteristic for age changes were detected spontaneously as the signal intensity grows smaller. It was established that magnetic resonance signals of maximal intensity come from pulposus nucleus in juvenile age. This intensity significantly exceeds that from the adjacent disks. On the initial stage of dehydration "doubling" of the MR signal may be observed so as decrease of the intensity up to the level of signals from the adjacent disks. This method suggested allows to assess early stages of the disk dehydration and to determine age norms.

Adult↗
PubMed1995

[The role of magnetic resonant tomography in the diagnosis of primary and metastatic brain tumors].

1035 patients of suspected brain formations have been examined in a low-field magnetic resonance tomography (MPT) study. Various patterns of brain tumors were identified in 772 cases and diagnosis was verified by other procedures. Among the most frequent were neuro-epithelial tumors (157), meningiomas (161) and metastatic lesions (136). The MRT technique condition suggest histological pattern. Although less expensive and easier to service, low-field MRT's yield as much information for brain tumor diagnosis as medium- and high-field tomographs do.

Adult↗
PubMed1990

[Value of electroroentgenography in the diagnosis of skeletal degenerative and dystrophic changes and lesions].

The authors have carried out an electroroentgenographic study of degenerative and dystrophic changes of various portions of the skeleton in 635 patients, 30 of whom had had surgical interventions on the hip joints. The findings concerning the frequency of the occurrence and the peculiarities of the representation of some manifestations of the degenerative and dystrophic changes of the skeleton using electroroentgenography and film roentgenography have been compared. It has been established that electroroentgenography is characterized by a high degree of informativity in the diagnosis of this kind of pathology and the evaluation of the results of its treatment, with its efficacy being, on the whole, not lower than that of film reontgenography.

Adult↗
PubMed1978

[Skeletal characteristics of the hand in cervical cancer].

Under consideration is the status of hand skeleton studied electroradiographically in patients with cervical cancer and in females of the same age without cancer. It is shown that in cervical cancer patients skeleton ageing was less pronounced. The value of electroradiography for determining skeleton age is emphasized. An attention is given to the necessity of a more careful observation over persons with "young" skeleton age.

Electrodiagnosis↗
PubMed1978

[Role of direct radiographic magnification in the evaluation of various morphological changes].

Radiograms with direct enlargement of the image were performed by means of X-ray apparatus "PEIC" designed by the firm "Svetlana", Leningrad. The status of the hand bones was studied in persons with posttraumatic bone regeneration, as well as angioarchitectonics of organs in experimental animals. In radiograms with direct enlargement some details characterising the process of ageing in the hand bones are observed more distinctly than in routine radiograms. The investigators succeeded in obtaining age changes in the structure of spongy substance and of cortical layer of phalanxes. The apparatus "PEIC" presents new possibilities for vital investigation of bone ostructures in experimental and clinical work, as well as to examine preparations of organs and their histological sections.

Adult↗
PubMed1975

[Roentgenogrammetry and roentgenodensitometry in assessment of several morphologic changes].

The work deals with the significance of quantitative rentgenological methods in morphological studies. The results of these methods used for estimation of certain developmental changes in the skeleton as well as for estimation of experimental data on the reparation of the bone tissue are analyzed. It is also shown that the quantitative rentgenological estimation of the state of soft tissues is possible. The role of rentgenogrammetry and rentgendensitometry in the intravital characteristics of the morphological changes associated with different factors is stressed.

Absorptiometry, Photon↗