[Expanding the indications for the surgical treatment of gastric peptic ulcer].

A group of patients operated upon for ulcer disease of the stomach was selected from 1279 patients with this disease in which the nearest results of the surgical treatment were followed-up retrospectively. Seven patients died. The average period of postoperative treatment in the hospital was (17.

[The reliability of endoscopic gastric biopsy in the diagnosis of the malignant degeneration of stomach ulcers].

A comparative analysis of results of the pre- and postoperative investigations carried out in 232 patients with gastric ulcerations of different nature has shown a relatively low effectiveness of fibrogastroscopy with biopsy in the recognition of malignant ulcers. The sensitivity of this method was found to be (83 +/- 3)%. The results obtained show the necessity to widen the operative treatment of patients with ulcer disease of the stomach, patients with the so called relative indications included.

[The possibilities for the conservative treatment of patients with acute cholecystitis].

Based on an analysis of treatment of 734 patients, among them 301 patients with destructive cholecystitis, the authors consider that it is necessary to widen indications to conservative treatment in acute period. As a result, lethality after treatment of acute cholecystitis was reduced to 0.4%.

[Reconstruction of images in emission tomography].

The algorithm of back projection with filtration for exponential Radon transform leads to strong distortion for big diameter objects. The main reason for this distortion is mainly the exponential increase of errors in the quadrature formula for a weighed back projection operator. So it is sometimes more convenient to use the back Radon transform R-1 and then to correct the result, taking into account attenuation.

[Single-photon emission-computed tomography with the Testascan multidetector gamma tomograph in neurologic practice].

The paper is concerned with the results of single-photon emission tomography and gamma-topography in patients with cerebral tumors, cerebral circulatory disorders and pathology of the liquor system. Tomographic investigation was shown to enhance the accuracy and reliability of the detection of cerebral tumors. Single-photon emission computerized gamma-tomography (SPECT) permitted the detection of structural and morphological cerebral changes in disturbed cerebral circulation of various etiology.