Fifteen radiologists independently evaluated fifty non-contrast brain computed tomography of patients with middle cerebral artery (MCA) stroke. Within-group agreement was either negligible or moderate, and the best inter-expert agreement was observed between neuroradiologists with 1 to 3 years of experience. Our study allows us to conclude that ASPECTS is not an ideal tool for standardizing the diagnosis of MCA stroke, therefore, it is necessary to develop new models of standardization systems, as well as the use of hydride diagnostics, including automatic analysis.

Goal of investigation was comparison and assessment of the state of cerebral perfusion according to SPECT data after coronary artery bypass grafting and simultaneous surgical intervention on the carotid and coronary arteries.

Brain perfusion data were studied in 34 cardiac surgical patients who underwent surgical correction under conditions of cardiopulmonary bypass: simultaneous intervention on the coronary and carotid arteries (n = 21) and coronary artery bypass grafting (n = 13). The study of the brain was carried out by SPECT with the radiopharmaceutical 99mTc-HMPAO (Ceretek).

In the group with CABG, there was a statistically significant decrease in the CBF values in the region of the caudate nucleus on the right, in both occipital and parietal lobes (p = 0.004193). In the group with simultaneous interventions, a significant decrease in the CBF indices in the right occipital and left parietal lobes (p = 0.020672), an increase in the indices in the left temporal lobe (p = 0.011286) was revealed.

CBF indicators in the group with simultaneous interventions are significantly lower than those in the group with CABG both in the preoperative and postoperative periods.

The data obtained indicate that patients with combined atherosclerotic lesions of the coronary and carotid arteries have significantly lower values of the CBF in comparison with patients with isolated changes in the coronary arteries.

Coronary artery bypass grafting and simultaneous surgical interventions on the carotid and coronary arteries under cardiopulmonary bypass may be accompanied by a significant decrease in regional cerebral blood flow in certain areas of the brain, and these changes in the CABG group can be traced in a larger number of analyzed areas.

The global scientific community has recognized the high importance of lung CT as a diagnostic method. The objective of this study is to prove the significance of lung CT as a means of predicting fatal outcomes of COVID–19 viral pneumonia in patients with a severe and extremely severe course of the disease. The volume of lung damage was retrospectively estimated in postmortem studies of 26 patients with the burden of cancer and in 78 patients without any cancer history (the control group). Lung CT was performed on the day of death and maximum 3 days before it. We concluded that the patients with cancer died with a lesion volume two times smaller than those without cancer, 32.38 ± 17.41% and 69.21 ± 11.63%, respectively. Thus, lung CT is not only a diagnostic tool, but it can also predict the fatal outcome of SARS-CoV-2 pneumonia (COVID-19) in patients with a severe and extremely severe course of the disease.

The aim of this research is to analyze artifacts in dual-energy chest radiography: their appearance and how to eliminate them. A total of 252 patients were examined in random order by using dual-energy radiography. As a result, 756 images were analyzed. This review describes the most important and most prevalent of them, including motion artifacts - 58 (41,4%), quantum noise – 55 (39,2%) and decreasing the suppression of bony elements on soft-tissue-selective images – 27 (19,3%). The main reason of dual-energy chest radiography artifacts is incorrect image reconstruction parameters.

This article provides a review of the literature on HIV-associated tumors (HATs) such as diffuse large B-cell lymphoma, Burkitt’s lymphoma, plasmablastic lymphoma, and anal canal lymphoma. The presented material is supplemented with own observations and illustrative material.

Dirofilariasis is a transmissible zoonotic biohelminthiasis caused by nematodes that parasitize the lymphatic system and subcutaneous tissue. This paper presents cases of dirofilariasis lesions of the soft tissues of the face and eyes.

Purpose: to demonstrate the possibility of ultrasonic diagnosis of dirofilariasis of soft tissues of the face.

Materials and methods. Dirofilaria can affect the soft tissues of the face, eyes, mammary glands, buttocks. Patients complained of swelling, induration and hyperemia in the soft tissues of the face. Ultrasound was performed, which determined echoes characteristic of helminthic parasites, parasites were removed, the belonging of the macropreparation to dirofilaria type Dirofilaria repens was confirmed by the laboratory of the SES of Krasnodar.

Results: the possibilities of ultrasound examination of the eyes and soft tissues were demonstrated, and the characteristic echo signs in dirofilariasis were identified.

A clinical case of sphenoid sinus fungal ball was presented and interested for non-typical computer tomography imaging features, resulting in the patient was threatening from nonspecific sphenoid sinusitis throughout the year. A long persisted fungal ball became malignant. The imaging data of sphenoid sinus fungal ball in the onset and manifestation of the disease was analyzed. By presentation of the clinical case the importance of analyzing sinus bone wall remodeling by means of computer tomography and using of magnetic resonance imaging in a case of a timely fashion diagnosis of sphenoid fungal ball was shown.