Objective Estimates of ultrasonic attenuation (the loss of energy as an ultrasonic wave
propagates through tissue) have been used to evaluate the structure and function of tissues
in health and disease. The purpose of this research was to develop a method to estimate
ultrasonic cervical attenuation during human pregnancy using a clinical ultrasound system.
Methods Forty women underwent a cervical scan once during pregnancy with the Zonare®
z. one clinical ultrasound system using a 4–9‐MHz endovaginal transducer. This ultrasound …