[Investigation of the exposure to radiation of the embryo in the course of x-ray examination during pregnancy. 2nd communication: Estimation of the exposure to radiation using the area-dose or the tube-current-time product (author's transl)].

Thermoluminescence dosimetry of surface doses and doses near the uterus was performed during standardized X-ray examinations of the pelvis. Surface doses and the dose to the uterus were estimated from the available radiographic data referred to the tube and with the use of tissue/air ratios, and a comparison with the results of measurement was made. This comparison shows that the mean whole-body dose to the embryo can be estimated with a relative total risk of 20%, if all essential data of the exposure to radiation are present and if the position in depth of the embryo is known. Guiding data of the surface dose and of the dose to the uterus are given individually for fluoroscopic tests, a.-p. and lateral radiographs under standardized conditions of X-ray examination.