The aim of this study was a comprehensive analysis of a number of MR patterns in the diagnosis of trigeminal neuralgia (TN) by the method of logistic regression. Study population consisted of 133 patients: with trigeminal neuralgia (TN) (86, surgically (n = 56) and clinically (n = 30) verified; 55 ± 11 years) and reference group (47, 51 ± 16 years). The data were obtained using the FIESTA sequence (slice thickness 0,5 mm) on 3 T and 1,5 T (Discovery 750w and Optima 450w, General Electric). To construct the statistical models, 7 separate MR patterns were used: lengths of intercisternal portions of trigeminal nerves, cross-sectional area and ratio of nerve diameters in REZ regions, diameters of adjacent arterials, length of neurovascular contact, angles of these loops and angles of transverse intersection of trigeminal nerves with arteries in the posterior cranial fossa. Three logistic models were built separately, differing in the inclusion of control groups. The total model included the maximum number of nerves for analysis (209 nerves), the second model with the inclusion of the parameters of the contralateral nerves (128 nerves) and the third model with nerves of the healthy individuals (147 nerves). In all three models, the greatest odds ratio was observed for the diameters of the adjacent arteries (6.13; 5.51; 9.56). The second most important predictor of TN for the general model and contralateral comparisons was the ratio of nerve diameters (1,97 and 3,3). For the third model (comparison with the healthy individuals), the second most important predictor was the length of neurovascular contact (1,88). Cross-sectional areas also had significance in all models (0,64; 0,71; 0,63). Values of angles and lengths of nerves had lower statistical significance for all models. Thus, the most important MR patterns for the diagnosis of TN were the diameters of the adjacent arterial loops and the ratio of nerve diameters in REZ. This fact may reflect the importance of nerve deformation for first two models. It may confirm the mechanical pressure as the main mechanism for classical TN.

The aim of the study was to evaluate the effectiveness of single-voxel proton magnetic resonance spectroscopy (SV 1H-MRS), combined positron emission and computed tomography (PET/CT) scans in determining the prognosis of breast cancer, the nature of therapeutic pathomorphism under the influence of neoadjuvant therapy. The supervision period lasted from 2015 to 2020. There were 112 breast cancer patients aged 30 to 83 years (mean age 53,3 ± 11,2 years [54 (45; 59)], 95 % CI: 51.2-55.4), who were divided into 2 study groups depending on the survey design. The 1st group consisted of 77 (68,75%) patients who have had single-voxel proton magnetic resonance spectroscopy added to the standard protocol of multiparametric magnetic resonance imaging of the mammary glands (mpMRI MG). In the 2nd group of 35 (31,25%) patients, PET/CT scans of the whole body with 18F-fluorodeoxyglucose (18F-FDG) were performed in addition to the standard study. In the course of the observation, it was proved in dynamics that it is advisable to carry out an mpMRI with SV 1H-MRS during the initial examination of breast cancer patients since it has higher accuracy (Ac = 98,3 %, 95 % CI: 86,3-100,0 ) compared with PET/CT in assessing the local prevalence of tumors, their size, structure and vascularization. The peak of total choline (tCho) determined with SV 1H-MRS should be considered as one of the metabolites - predictors of an unfavorable prognosis of the course of the disease.

A distinctive feature of modern technology is the widespread introduction of interventional radiology techniques, among which a special place is occupied by minimal invasive interventions performed under radiological and sonographic control. Pathological changes in the mammary gland detected by means of visualization require mandatory morphological confirmation. The article is devoted to breast biopsy techniques, optimization of choice in various clinical situations, to improve the morphological diagnosis of breast tumors. The results of a complex radiation and interventional mammological examination are presented.

The features of visualization of sternoclavicular joints on an outpatient basis in 83 people are described, the results of studies are compared depending on the scanning technique and the position of the patient. This work contains information that allows a more detailed approach to the clinical assessment of the state of the sternoclavicular joints, taking into account their functional state and the age of the patients.

The paper proposes a system for automatic segmentation and determining radiodensity of the liver developed by the authors. Retrospective study of the system is performed. The system is able to correctly determine radiodensity of both normal liver and the liver with pathological changes, able to handle tomograms where the liver is presented partially. The system can be used for automatic determining radiodensity of the liver on large data bases of computed tomograms. It can be used for revealing subclinical cases of the liver as well as for research works.

Acute hematogenous osteomyelitis in newborns occurs with a frequency of about 0,4 % of all live births, and this figure does not tend to decrease, despite the significant success of periand neonatology. In approximately 25-30% of cases, 2 bones are affected at the same time, extremely rarely - 3 or more. Our own observation of a unique multiplicity of lesions - 14 osteomyelitis foci, including such a rare localization as the ilium with the formation of the psoas abscess, upper jaw, upper cervical vertebrae with the formation of deep retropharyngeal neck abscess. The course of the disease was complicated by massive sinus thrombosis, multiple organ changes of an infectious-toxic nature. Equipping the clinic with all types of modern means of radiation diagnostics made it possible to diagnose all lesions and carry out targeted treatment as soon as possible. The article is extensively illustrated and contains a review of the literature, affecting mainly rare variants of osteomyelitis in infants.

The causative agent of echinococcosis is the tapeworm Echinococcus granulosus, with its pubertal form having a length of 2—7 mm. The tapeworm Echinococcus granulosus, growing, developing, and living in the human body for decades, finally turns into a round or oval-shaped cyst filled with fluid. The most common type of echinococcosis is that of the liver (50–70 % of all echinococcosis cases), with the cysts most likely being located in the right lobe of the liver. Echinococcosis of the heart is detected in 0,2–2 % of all echinococcosis cases. Heart echinococcosis most often damages the myocardium of the left ventricle. Very rarely, though, cysts get localized in the pericardium, the left atrium, and the right atrium. Here we give an example of an echinococcal cyst in the right atrium.