Objective: to improve the results of preoperative diagnosis of Mirizzi syndrome.
Material and methods. Under our supervision for 2006–2015 we had 23 patients with the Mirizzi syndrome. Verification of cholecystolithiasis, condition of gallbladder’s wall and biliary tract dilatation degree was evaluated sonographically. Biliary decompression was realised by percutaneous transhepatic cholangiostomy that was implemented under the combined ultrasonic and X-ray control by the Seldinger technique for self-locking pigtail drainages 8 F. As a method for direct visualization of the bile ducts was used antegrade cholangiography.
Results. Preoperative diagnosis was verified in 18 (78.3%) patients, based on the results of ultrasound and data of antegrade cholangiography. In I type of Mirizzi syndrome (prefistule form) was revealed a combination of non-standard ultrasonic symptoms: if there were signs of "high" extrahepatic block of bile ducts (area of liver gate and confluence of hepatic ducts) there was recorded actual intravesical bile hypertension. Lack of lymphadenopathy near the choledoch and focal lesions of liver parenchyma in the goal area confirmed the benign character of the "high" bile ducts block. II type of Mirizzi syndrome (fistula form) was characterized by the presence of megacholelitiasis combined with a lack of intravesical bile hypertension. Antegrade cholangiography in combination with intra-ductal diagnostic catheters and manipulation wires and in some cases with cholecystography allowed to differentiate types of Mirizzi syndrome. In 5 cases Mirizzi syndrome was an intraoperative finding. Antegrade minimal-invasive access to the biliary tree was used in patients with high risk of surgery for subsequent X-ray interventions (lithotripsy, balloon dilatation of major duodenal papilla, dislocation of stones to the duodenum).
Conclusions. Effective preoperative diagnosis of Mirizzi syndrome can be successful more than in half cases of the combined use of ultrasonography of the biliary tract and the results of antegrade dynamic cholangiography. That was carried out through percutaneous transhepatic cholangiostomy in conjunction with additional diagnostic intraluminal manipulations (wires and catheter inspection and palpation).

Objective. Determination of the diagnostic capabilities of magnetic resonance imaging of the uterus and its appendages (MRHSG) on devices with the induction of the magnetic field 3 Tesla (T) as an alternative to the classic X-ray hysterosalpingography, accompanied by a significant radiation dose to the patient.
Material and methods. During the period from April 2015 to February 2016 12 MRHSG was conducted using magnetic resonance imaging apparatus Verio Magnetom 3T, Siemens company (Diagnostic Center "BarsMed", Kazan, Russia). We used neutral and not giving adverse reactions contrast agent – carbon dioxide. The pelvic organs – the uterus and fallopian tubes – represent the zone of interest.
Results. Analysis of the data showed that MRHSG on the apparatus with the induction of the magnetic field of 3 T is a highly informative method in the diagnosis of tubal patency, allowing fully assess the state of the pelvic organs on the whole and identify pathology.
The absence of radiation exposure and contraindications associated with intolerance to iodinated contrast agents and other side effects differs MRHSG from the traditional X-ray method and makes MRHSG to be an alternative secure method of diagnosis, which has a number of advantages described in the article.
Conclusions. MRHSG on the apparatus with the induction of the magnetic field of 3 T in diagnosis of obstruction of the fallopian tubes and the visualization of the uterus and appendages diseases can be optimal and safe alternative to the X-ray hysterosalpingography, which accompanied with radiation exposure and is a number of side effects.

Objective: using magnetic resonance imaging (MRI) to evaluate the characteristics of pathological changes of fibro-cartilage of the knee in patients with Baker cyst, to assess the compliance of degrees of damage stages of osteoarthritis on a scale of Kellgren–Lawrence (K–L), and compare the results with the data of other researchers.

Material and methods. This study included patients (38–82 years) with a cyst Baker accidentally detected during ultrasound veins of the lower extremities. The subjects underwent a single knee MRI. MRI was made in three dimensions using 3D gradient-echo protocol. Independent radiologist evaluated the presence and severity of chondral defect osteophytosis, damage to the menisci and ligaments, intraosseous edema and subchondral cysts. The osteoarthritis stage of the knee were identified by X-ray performed in a standing position in the standard two projections, with K–L scale.

Results. In this study, the results of a survey of 20 people, whose average age was 57.2 years. According to the radiological scale of K–L two patients were assigned to the stage 0 degree, 5 people to stage 1, 2, 4 each, and 3 – to stage 3. Synovitis of various severity was detected in 85% of the studies. Nineteen visualized the patellar cartilage damage, the condyles of the femur and tibia are most commonly affects the joint area. Among the most commonly injured ligament anterior cruciate ligament was determined – 9 (45%) patients in the same amount of detected intramedullary edema condyles femur and tibia. Eighteen subjects had at least one anomaly meniscus detectable by MRI, while in 11 (55%) persons were deviations, at least two or more regions of the knee examined.

Conclusions. Our results suggest that not all visualized on MRI degenerative damage to intra fibro-cartilaginous tissue correlate positively with the stages of osteoarthritis of the knee, identified by standard radiographs and may not significantly affect the onset and progression of synovial cyst of the popliteal region.

Objective: to investigate the impact of a neutron beam formed with the accelerator-based epithermal neutron source designed at the G.I. Budker Institute of Nuclear Physics (INP) on the viability of human and animal tumor cells cultured in the presence of boron-10 isotope.
Material and methods. Human U251 and T98G glioma cells and Chinese hamster CHO-K1 and V-79 cells were incubated at various concentrations in the culture medium containing 10B-enriched L-boronophenylalanine. The cells were irradiated with a neuron beam using the accelerator-based epithermal neuron source. A clonogenic assay was used to evaluate the viability of the irradiated cells. The absorbed doses obtained from elastic scattering of fast neutrons by substance nuclei and the doses obtained from boron neutron capture were calculated using the NMS code. The absorbed doses of gamma-radiation were measured with a mixed radiation dosimeter.
Results. The viability of boron-containing and intact human U251 and T98G cell lines and Chinese hamster CHO-K1 and V-79 cells was analyzed after neutron beam radiation. Irradiation of all four cell lines were cultured in the presence of 10B was shown to reduce their colony-forming capacity compared with the control. Elevated boron levels in the culture medium resulted in a significant decrease in the proportion of survived cells. Radiation had the most pronounced impact on the proliferative capacity of the human U251 glioma cell lines.
Conclusion. The cultures of human tumor cells and mammalian cells demonstrated that the neutron beam formed with the accelerator-based epithermal neutron source designed at the INP, was effective in reducing the viability of tumor cells in the presence of 10B

Objective. The aim of this study was to determine the informative value of dynamic tomoscintigraphy in detection of multivessel coronary artery disease (CAD).
Material and methods. Patients with multivessel CAD (n= 16) and healthy volunteers (n= 9) underwent dynamic cardiac single photon emission computed tomography with 99mТс-MIBI at rest and during pharmacological stress-test.
Processing of acquired results involved the formation of regions of interest from the cavity and the myocardium of the left ventricle used to create activity-time curves. Coronary flow reserve index was defined as a quotient of two ratios of the mean counts from the myocardial region to the integral activity in the left ventricular cavity for the studies performed during pharmacological stress test and at rest.
Results. The mean values of coronary flow reserve index were 1.86 (1.59; 2.2) in group of healthy volunteers and 1.39 (1.12; 1.69) in patients with multivessel CAD. When the value of this index was less than 1.77, the method allowed for detection of three-vessel CAD with the sensitivity and specificity rates of 81.8% and 66.7%, respectively.
Conclusion. Performing the standard myocardial perfusion scintigraphy in combination with the method of coronary flow reserve index assessment allows for enhancement of the diagnostic value of scintigraphic approach in the evaluation of coronary circulation disturbances in multivessel CAD.

A clinical case of successful treatment of newly diagnosed fibro-cavernous pulmonary tuberculosis, caused by Mycobacterium tuberculosis with multidrug resistance, is presented. Monitoring of effectiveness of treatment with modern high-tech radiation methods is submitted. The necessity of an individual approach to the treatment of tuberculosis in these patients is shown.

A clinical observation of focal accumulation of 99mTcpyrophosphate in aortic aneurysm, simulating skeletal pathology of the lumbar vertebra in planar scintigraphy mode, is presented. Additional single-photon emission computed tomography combined with computed tomography-something view allowed to confirm that the radiotracer uptake focus was localized in the distal part of the aneurysm, in the zone of lumen subocclusion by a calcified thrombus. It is suggested that the local tracer accumulation is not only due to calcification but also due to inflammatory, a factor that plays a role in the genesis of an aortic aneurysm

This review shows some basic information regarding the relatively new and one of the promising areas, called "theranostics" and also discusses its basic principles. Special attention is paid to the study of approaches in selecting the most appropriate in the application of radioisotopes for solutions appropriate diagnostic and therapeutic applications. Also presented the main directions in the work with monoclonal antibodies and their use in radionuclide theranostics.

The article describes the main statements of the Professional standards of radiologists, statements regarding vocational radiologists training, included in the Orders of the Ministry of Health of the Russian Federation and the educational standards in the specialty “Radiology”, approved by the Ministry of Education and Science of the Russian Federation.