Use of doppler ultrasound to evaluate testicular blood flow dynamics in bulls

An abstract of the study by Favaro et al evaluating the circulatory dynamics of the testicular arteries in bulls during four consecutive seasons, is discussed. Bulls were evaluated by means velocimetry parameters (Vel), pulsatility index (PI) and resistance index(RI) using Doppler ultrasonography. The study revealed that Doppler ultrasound can be used to evaluate scrotal blood flow changes of the pampiniform plexus during season and it suggests that differences in Vel and PI dynamics are an important players in the physiological requirementsf or its normal reproductive performance under different environmental conditions.