3.5 Results and Conclusions
293
plethysmogram. And the greatest informativity is reached relative to the mechanical
shifts amplitude of the oscillation zones of the human chest cutaneous covering.
The holographic interferograms of the human chest were obtained (time interval
between the pulses was 300–400 μs) that gives possibility to visualize on the interferogram the oscillation zones in the area of the right clavicle, the left shoulder and
forearm, as well as in the areas of the larynx and the diaphragm. As it is seen from
the given holographic interferograms, the radiation parameters of the created laser
and the parameters of the hologram recording device provide filming of holograms
of the human chest.
The analysis of the medical research results of the cardiovascular system has
shown that alteration of the obtained with LHC holographic interferogram of the
human chest surface during heart contraction is characterized by the degree of intensity of interference fringes crowding. In the chest activity centers (zones of the left
and right ventricles, tracts of the aortal and pulmonary outflows, etc.), the greatest
deformation of the proper tissues is observed at the tension of the vessel walls growth
in the ventricular systole phase and further period of quick emptying. In the interferogram, it looks like intensification of the interference fringes concentration and
it coincides with the anacrotic inclination of the rheographic curve that is registered
with “Impecard-3.” But during the diastole period, the holographic image changes.
The holographic interferogram reflects pulse oscillations of the blood filling of the
area under study. The oscillations depend on the heart stroke volume as well as on
the speed of the blood flow, which is mostly determined by the size of the vessels
lumen, elasticity and tonic contraction of the vessel wall. It is obvious that if there is
pathology of the cardiovascular system, which causes malfunctions of the described
functions, then the holographic interferogram (the interference fringes frequency,
their width, contrast, occurrence of additional activity centers, modification of the
previous ones, etc.) will greatly differ from the interferogram of a healthy person.
Thus, this study gives the possibility to get information about relative intensity
of blood filling, the state of the vascular tone in different areas of the human chest.
Assembly and adjustment of the experimental sample of the laser radiator were
conducted. The radiatior operates in doubled monopulses generation regime with a
regulated interval (100–700 μs) between pulses in the single-mode regime.
4. The possibility of obtaining complimentary combined 3D and plane images
was studied. The efficiency of visual perception of the images was intensified. The
methods of recording and formation of images were developed, which can widely
be applied in data storage systems (holographic archives) during the creation of
atlases and classifiers of pathology of medical–biological objects. The pathologies,
which are registered in the hologram, can serve for medical workers as an objective source of information during medical study as well as during preparation of
surgeons for a surgery, and they can be used as a visual tutorial during demonstration for medical students. There were obtained highly qualitative holograms of
human vertebrae preparations with lumbar osteochondrosis manifestations, corrosion preparations of the liver blood vessels (see Fig. 3.47). Holographic images give
more accurate data about the localization of the process, the degree of its intensity, etc. Transfer to pulse laser sources gave the possibility to conduct holographic
Précédent

- 319/543

Suivant