Journal of Ultrasound in Medicine, Vol 17, Issue 10 637-642, Copyright © 1998 by American Institute of Ultrasound in Medicine
Receiver operating characteristic curves of transvaginal Doppler blood flow measurements in benign and malignant adnexal tumors
I. Takac
Gynecology and Perinatology Clinic, Maribor Teaching Hospital, Ljubljanska, Slovenia.
The role of receiver operating characteristic curves of transvaginal
Doppler velocimetry in predicting malignancy was evaluated in 80 patients
with benign and 40 patients with malignant adnexal tumors. The mean values
of peak systolic velocity did not differ significantly. Malignant tumors
had a significantly higher end diastolic velocity and mean flow velocity
than benign tumors. Benign tumors had a significantly higher ratio of peak
systolic to end diastolic velocity, pulsatility index, and resistive index
than malignant tumors. The diagnostic accuracies in predicting malignancy
were as follows: peak systolic velocity, 62%; end diastolic velocity, 79%;
ratio of peak systolic to end diastolic velocity, 63%; mean flow velocity,
73%; pulsatility index, 91%; resistive index, RI 92%. Doppler velocimetry
analysis allows us to predict the presence of malignancy with limited
reliability.
