The aim of this study was to evaluate the effectiveness of MRI in diagnosing combined renal and ureteral injuries at different periods of traumatic disease (TD). Methods and Results: We analyzed the results of diagnostics and treatment of 139 patients (80 women and 59 men) with renal and ureteral injuries aged between 18 and 72 years. There were 67(48.2%) patients in the period of acute reaction to trauma, 40(28.8%) patients with early manifestations, and 32(23%) patients in the period of late manifestations. In 127(91.4%) patients, an urgent plain abdominal X-ray was performed without any preliminary preparation. USI of the abdominal and retroperitoneal space was performed in 108(77.7%) patients in the stage of the primary assessment of renal injury as it was a rapid non-invasive investigation. A whole-body MSCT was performed in 131(94.2%) patients, using the nonionic contrast agents Ultravist (350mg I/ml) and Omnipaque (350mg I/ml). MRI was performed in 125(89.9%) patients, including cases of pregnancy and a medical history of allergies. Contrast-enhanced MSCT had a high diagnostic efficiency in assessing complications in kidney and ureteral injuries at different periods of TD (accuracy of 89.2% for acute reaction, 88.8% for early manifestations, and 89.5% for late manifestations). MRI of the kidneys and ureters was indicated in periods of early and late manifestations of TB to detect renal complications in cases with a discrepancy between clinical manifestations and the results obtained by ultrasound and MSCT (accuracy of 87.5% for early manifestations and 89.9% for late manifestations).

The aim of the study was to assess the capabilities of magnetic resonance imaging (MRI) in the diagnosis of complications in patients with combined kidney and ureteral injuries during different periods of traumatic disease. The observation group included 139 patients aged from 18 to 72 years with renal and ureteral injuries, who were injured in traffic accidents. Complications of renal trauma occurred in 74 of 128 patients with isolated and combined injuries (59.2%), strictures were observed in 9 of 11 patients with ureteral trauma in the late period, and 1 of them had a failure of vesicoureteral anastomosis. The most common complication in the early and late periods of traumatic disease, occurring in 25.0% of cases, was pyelonephritis; patients with abscesses (12.5%) and acute renal failure (11.7%) were also common. The methods of choice for the diagnosis of combined injuries in the acute period were: ultrasound examinations according to the eFAST protocol and multislice computed tomography according to the “Polytrauma” protocol. Multiparametric magnetic resonance imaging (mpMRI) of the kidneys and ureters was indicated in the periods of early and late manifestations of traumatic disease to detect renal complications when there is a discrepancy between clinical data, ultrasound and multislice computed tomography (MSCT) findings, and there are contraindications for MSCT with intravenous contrast.

В статье исследуются асимптотические свойства многочленов ln(x), ортогональных с весом e −x j ∆tj на произвольных сетках, состоящих из бесконечного числа точек полуоси [0, ∞). А именно установлена асимптотическая формула, в которой при возрастании n вместе с N асимптотическое поведение этих многочленов близко к асимптотическому поведению многочленов Лагерра.

Влияние среды и природы электрода на электровосстановление диметилсульфоксида1 Дагестанский государственный университет; Россия, 367001, г. Махачкала,