Emission characteristics of H- ion source with inverse gas magnetron geometry.

The work is dedicated to the experimental investigation of the intense volume-plasma H(-) ion source. Preliminary experimental researches of two parameters of the upgraded source--emission density of H(-) ions and gas flow--are represented below. In plasma volume of noncesium H(-) ion source, the conditions for obtaining of increased density of H(-) ions in the field of adjoining to the emission aperture were realized.

[Significance of computerized, magnetic resonance and ultrasound tomography in the diagnosis of spreading of pulmonary cancer to the mediastinum].

In 232 patients predominantly with the central type of lung cancer underwent echotomography (ET) (n = 16), CT (n = 142) and MRT (n = 55) in order to evaluate their possibilities in the diagnosis of the spread of a tumor process to the mediastinum and their impact on disease staging. The results of the techniques and the data of surgical interventions were compared: CT in 55 patients, CT in 70 and MRT in 22. The sensitivity of each method was determined by 3 parameters: 1) detection of intrathoracic lymphadenopathy; 2) diseased mediastinal large vessels; and 3) cancer spread to the pleura, pericardium, heart, and chest.

[The use of protease inhibitors in the treatment of burn wounds].

The results of experimental and clinical studies of the effect of contrykal and aminocaproic acid on tissue regeneration in deep burns are presented. In the experiment, by means of planimetric, histologic, histochemical and biochemical methods of investigation, the positive effect of inhibitors on healing of the burn wounds is shown. In treatment of 272 patients with deep burns, it was established that use of protease inhibitors at the phase of regeneration contributed to 2-fold acceleration of marginal epithelization, shortening of time of would preparation to autodermoplasty by 3-4 days, increase in effectiveness of survival of the cutaneous flaps.

[Possibilities of contact chromatic thermography in the diagnosis of lung cancer].

Thermographic results were analyzed in 40 lung cancer patients and in 2 patients with acute pneumonia. The diagnosis and spreading of disease were established during x-ray, bronchological and morphological investigations. Normal temperature distribution was observed on the skin surface of lung cancer patients.

[X-ray diagnosis of a small quantity of liquid in the pericardial cavity].

X-ray symptomatology of small pericardial effusions was studied on the basis of analysis of clinicoroentgenological and echocardiographic investigation of 173 patients with various chest diseases. Comparison of x-ray and USI results led to a conclusion of the effectiveness of polypositional roentgenography for the detection of small amounts of fluid in the pericardial cavity.

[Radiodiagnosis of a small amount of fluid in the pericardial cavity].

X-ray symptomatology of small pericardial effusions was studied on the basis of analysis of clinicoroentgenological and echocardiographic investigation of 173 patients with various chest diseases. Comparison of x-ray and USI results led to a conclusion of the effectiveness of polypositional roentgenography for the detection of small amounts of fluid in the pericardial cavity.

[Shape of the left ventricular cavity during ejection in patients with ischemic heart disease].

Different types of left-ventricular wall movement were demonstrated in normal subjects and coronary patients, the differences being due to different degrees of reduction in the equatorial diameter of the cavity in the ejection phase. Rationale are given for using the mean diameter for left-ventricular volume calculations. A linear relationship has been demonstrated between the degree of diameter reduction and the ejection fraction.

[Evolution of the shape of the left ventricular cavity at different phases of the cardiac cycle in healthy persons and ischemic heart disease patients].

Cineventriculo- and echocardiographic studies of left-ventricular cavity demonstrated an increase in the deep diameter and the thinning and outward displacement of the posterior wall during the isovolumic systole in normal subjects. This change of shape was however uncommon and, if present, less pronounced in 19 patients with marked coronary heart disease (CHD). In normal subjects, posterior wall movement amplitude was always greater than that of the anterior wall, whereas in coronary patients left-ventricular wall movement amplitudes were always similar.

[Use of epsilon-aminocaproic acid for treating granulating burn wounds].

Results of the application of synthetic inhibitor of proteolytic enzymes epsilon-aminocaproic acid in the treatment of granulating burn wounds are described. High effectiveness of the aminocaproic acid in healing of granulating wounds after burns is shown as well as in preparing great granulating burn wounds for autodermoplasty and the take of transplanted autodermic flaps.

[Use of liquid crystals for determining burn depth].

The article describes results of the application of liquid-crystal thermoindicating films for obtaining an objective assessment of the burn depth in 30 patients. The proposed method is recommended as an additional objective test of the true burn depth. The method is harmless for the patient, simple, does not require expensive apparatus and may be used both at the hospital and at the prehospital stage.

[Possibilities for improving methods of radiotherapy of esophageal cancer].

The authors considered 3 variants of radiation therapy of esophageal cancer using megavoltage radiation sources: standard methods including a continuous course, optimized planning including a continuous and split irradiation course. In the use of megavoltage sources and a continuous irradiation course the 5-year survival was 8.8%.