[Radiation risk for the child in urinary tract roentgendiagnostic (author's transl)].

During one urogramm skin doses were measured between 0,1--0,9 Roentgen (R) in the radiation field. The testes dose was 6--41 mR. In mictioncysto-urethrography the skin dose was between 0,2 and 4,2 R/examination, and the testes dose 50--80 mR. The energy transferred to the body by the X-rays (integral dose) was 5,6--23 mJoule (mJ) per urogramm. The mean-body-dose (integral dose/bodyweight) was 1,3--0,6 mJ/kg per examination. The probability to induce a lethal disease (for example leukemia or malignoma) by this dose is approximately 1:50 000--1:500 000. The probability that exposure of the gonades induces mutations and thereby malformations in the following two generations is equally about 1:50 000--1:500 000.