What is the unit of measurement that frame rate is expressed in?

Frame rate is a crucial concept in ultrasound imaging, representing the number of frames that are acquired per second. This measurement is expressed in Hertz (Hz), which indicates cycles per second. Specifically, if an ultrasound system operates at a frame rate of, for example, 30 Hz, it means that 30 frames of data are being processed every second.

Understanding frame rate is essential because it directly impacts the temporal resolution of the ultrasound images. A higher frame rate allows for more detailed visualization of moving structures within the heart, such as valves and blood flow patterns.

The other units listed do not correspond to frame rate: millimeters pertains to distance or length, decibels relate to the intensity of sound or signals, and watts measure power. Thus, Hertz is the appropriate and accurate unit of measurement for frame rate in the context of cardiac sonography.