Reviews and News on Ultrasound Machines

Power Doppler Imaging can be abbreviated as PDI, is an imaging technique based on the ultrasound technology. PDI is based on the Doppler Effect for measuring different parameters of the body. Doppler Effect correlates the velocity of the observer and the source in a medium, thus it is a procedure to find out the relative effect of the motion of the observer, source and medium. Power Doppler Imaging is a technique based on the Doppler Effect to find out the relative velocity of the blood which moves towards and away from the measuring probe.

With PDI the frequency shift of a particular blood flow on a heart valve is calculated. The speed and direction of the flow is also determined though this technique. The Power Doppler Imaging is typically used for cardiovascular studies which involves sonographic study of heart and vasculature system. These cardiovascular studies are essential in numerous areas such as determining reverse direction blood flow in the liver portions.

The Power Doppler Imaging is the non directional Doppler. The Doppler shift produced by these imaging methods come in the audible range and is represented audibly by stereo speakers. These speakers produce a distinct synthetic, pulsating sound.

Power Doppler Imaging when compared with conventional imaging methods such as color flow Doppler proves its utility in manifolds. Power Doppler Imaging methods usually visualize the morphological effects minutely by leaving the artifacts like echoshadowing and aliasing. In some of the cases of distal occlusion color flow Doppler has failed to depict the proper blood flow details, but power Doppler imaging gave the pertinent readings.

Power Doppler Imaging is a useful sonographic technique to determine the problems related to blood flow and can examine nicely some of the hypoplastic and stenosed arteries. The current inventions are making it more useful for the ultrasonic applications.