help button home button ClinMed NetPrints
HOME HELP FEEDBACK BROWSE ARTICLES BROWSE BY AUTHOR
Warning: This article has not yet been accepted for publication by a peer reviewed journal. It is presented here mainly for the benefit of fellow researchers. Casual readers should not act on its findings, and journalists should be wary of reporting them.

This Article
Right arrow Full Text
Services
Right arrow Similar articles in this netprints
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Branicka, N.
Right arrow Articles by Novyckyy, V.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Branicka, N.
Right arrow Articles by Novyckyy, V.
Related Collections
Right arrow Cardiovascular Medicine:
Other Cardiovascular Medicine

Right arrow CLINICAL:
Imaging Techniques

Right arrow Neurology:
Other Neurology

Right arrow Surgery:
Neurosurgery

clinmed/2001060002v1 (August 2, 2001)
Contact author(s) for copyright information

Mathematical simulation of hemodynamical processes and medical technologies

Nadiya Branicka, Ulyana Lushchyk, and Victor Novyckyy

Vascular pathologies constitute a significant part of human’s diseases and their rate tends to increase. Numerous investigations of brain blood flow in a normal condition and in a pathological one has created a new branch of modern medicine - angioneurology. It combines the information on brain angioarchitecture and on blood supply in a normal condition and in a pathological one. Investigations of a disease’s development constitute an important problem of a modern medicine. Cerebrum blood supply is regulated by arterial inflow and venous outflow, but, unfortunately, in the literature available arterial and venous beds are considered separately. This causes an one-sided interpretation of atherosclerotical and discirculatory encefalopathies. As arterial inflow and venous outflow are interrelated, it seems to be expedient to perform a complex estimation of arteriovenous interactions, prove a correlation dependence connection between the beds and find a dependence in a form of mathematical function. The results will be observed clearly in the graphs. There were 139 patients aged from 2 up to 70 examined in the "Istyna" Scientific Medical Ultrasound Center by means of a Logidop 2 apparatus manufactured by Kranzbuhler, Germany using a technique of cerebral arteries and veins ultrasound location (invented and patented by Ulyana Lushchyk, State Patent of Ukraine N10262 of 19/07/1995). A clinical interpretation of the results obtained was performed. With the help of this technique and ultrasound Dopplerography the blood flow in major head and cervical arteries was investigated. While performing a visual graphic analysis we paid attention to the changes of carotid artery (CA), internal jugular vein (IJV) and supratroclear artery’s (STA) hemodynamical parameters. Generally accepted blood flow parameters: FS - maximal systolic frequency and FD - minimal diastolic frequency were measured. The correlation between different combinations of parameters in the vessels mentioned above was investigated. Correlation analysis shows a significant (r=0.95) interdependence between different combination of hemodynamical parameters. Keywords: arteriovenous interactions, hemodynamical parameters, correlation dependence.





HOME HELP FEEDBACK BROWSE ARTICLES BROWSE BY AUTHOR