Three‐dimensional ultrasound: accuracy of distance and volume measurements

The aim of this study was to evaluate the accuracy of three‐dimensional ultrasound distance and volume measurements using a commercially available three‐dimensional ultrasound scanner. Sixty‐two distance measurements were performed twice on an ultrasound tissue‐mimicking phantom located in a water bath. Three‐dimensional ultrasound distance measurements were compared to the actual distance. Volume measurements were made in a water bath with 21 balloons of various shapes ranging in volume from 20 ml to 490 ml. Three‐dimensional ultrasound volume measurements were compared to actual balloon volumes and to conventional two‐dimensional ultrasound volume calculations.