[Conditions and limits of radiological examinations of the digestive tract].

The rising incidence of alimentary tract diseases forces imaging metod development. Developing radiologic diagnostics changed imaging methods role and increased quality demand. X-ray based methods are still used in diagnosing many illnesses. Basic abdominal x-ray in nightshift condition is necessary to diagnose perforation or obstruction. Ultrasonographic, computed tomography and magnetic resonance imaging methods are the most important nowadays. The most popular and non-invasive method of imaging is ultrasonography. It is irreplaceable thanks to its availability and precision diagnosing many internal organs. One of the newest method is magnetic resonance and imaging in all possible scans. Complimentary method is computed tomography. It is based on human body layers analysis. Method is based on x-rays and assessing all tissues absorption. It can produce three dimensional imaging. The newest software can produce virtual imaging of all body cavities as well as colon. Basic and highly specialistic methods should be carefully planned in diagnostic-therapeutic process. In decision making what method should be used, medical doctor and patient should take part, taking into account all indication and cotraindications as well as method limitations.