Abstract: Purpose. For basic, purpose was to develop effective methods of exact diagnostics of an acute pancreatitis (AP), to work out classifications of disease, an establishment of patients' condition definitions, and also productive supervision over dynamics of its process by means of application computed tomography (СТ) and magnetic resonance imaging (MRI). Besides, on the base of obtained data, the optimum tactics of treatment was worked out Materials and methods. More than 500 patients with AP were underwent CT and MRI with one-stage contrast agents' injection. During the research we have applied different variations of scanning modes and parameters. Results were analyzed in connection with supervision on patients conditions. Treatment tactics depended on obtained data Results. We have worked out effective methods of AP diagnostics, optimal parameters of research in different clinical currents and we have developed an effective tactics of treatment in patients with severe AP Besides, on the base of obtained data, the optimum tactics of treatment was worked out Conclusions. CT with intravenous contrasting is the best method of diagnostics or supervision in dynamics, which allows to work out the most productive treatment tactics. Using CT in combination with MRI in some cases can be specifying method of diagnostics. References 1. Араблинский А.В., Черняков P.M., Хитрова А.Н., Богданова Е.Г. Лучевая диагностика острого панкреатита. Медицинская визуализация. 2000; 1-14. 2. Прокоп М., Галански М. Спиральная компьютерная томография. 2009. 3. Райан С., МакНиколас М., Юстеис С. Анатомия человека при лучевых исследованиях. 2009. 4. Шабунин А.В., Мумладзе Р.Б., Чеченин Г.М., Тавобилов М.М. Этапное хирургическое лечение острого панкреатита, панкреонекроза алкогольной этиологии. Неотложная и специализированная хирургическая помощь. 1-й конгресс московских хирургов. Тез. док. М. 19-21 мая 2005 г. М.: ГЕОС. 2005; 122. 5. Balthazar E. CT diagnosis and staging of acute pancreatitis. RadiolClin. North. Am. 1989; 27 (1): 19-37. 6. Balthazar E.J., Megibov A.J., Pozzi R. Mucelli Imaging of the pancreas. Medical radiology.2009. 7. Piironen A. et al. Detection of severe acute pancreatitis by contrast enhanced magnetic resonance imaging. European Radiology. 2000; 2: 354. 8. Balthazar E. et al. Acute pancreatitis: value of CT in establishing prognosis. Radiology. 1990; 174 (2): 331-336. 9. Bradley E.L. A clinically based classification system for acute pancreatitis. Summary of the international simposium on acute pancreatitis. Atlanta. G., Sept. 11-13. 1992: 586-590. 10. Багненко С.Ф., Рухляда Н.В., Толстой А.Д., Гольцов В.Р. Лечение острого панкреатита на ранней стадии заболевания. НИИ СП им. И.И. Джанелидзе, С.-Пб. 2002; 24. 11. Robinson PJ.A., Sheridan M.B. Pancreatitis computed tomography and magnetic resonance imaging. European Radiology. 2000; 3: 401. 12. Balthazar E.J., Freeny P.C., Sonennberg E. Imaging intervention in acute pancreatitis. Radiology. 1994; 193: 197-306. 13. Balthazar E.J. et al. Acute pancreatitis. Prognostic value of CT. Radiology. 1985; 156:767-772. 14. Isenmann R., Rau B., Beger H.G. Infected necroses and pancreatic abscess. Surgical therapy. Kongressbd Dtsch Ges Chir Kongr. 2001; 118: 282-284. 15. Кармазановский Г.Г., Федоров В.Д. Компьютерная томография поджелудочной
