[A simple radiologic method for measuring physiologically the rate of intestinal transit].

A simple radiological method to measure physiologically the velocity of intestinal transit is described. As a marker, a small rubber bag containing 1 ml. of Biligrafina Fuerte was orally given, and its passage along the digestive tract followed, then, performing 2 or 3 serial plain radiographs of the abdomen. By what has been experimental until now, the method seems to be of great help for a better understanding of constipation and other intestinal disorders.