[Modified measurement of placental blood flow at I Gynaecological Hospital of Vienna University (author's transl)].

Reported in this paper is a modification of placental blood flow measurement which is in use at the I. Gynaecological Hospital of the University of Vienna. An injection of 350muCi 113m-In-Transferrin was followed by computer-aided on-line recording of the radioactivity curve over the placenta, using a gamma scintillation camera. Radioactivity-time curves may be described by the e-function, At=A0(1-e-kt). The iterative regression method was used for mathematical evaluation, and the curve slope was printed out at zero by the computer (tgx at zero). The flow curves were attributable with good clinical relevance to three types of standard curves depending on curve shapes. The disadvantages of other methods are discussed.