In what units is Duty Factor measured?

Duty Factor is a dimensionless quantity that describes the fraction of time that a system, such as an ultrasound pulse, is active or transmitting compared to the total time it takes for the complete cycle of operation. It is primarily expressed as a percentage, which reflects the relationship between the "On" time and the total cycle time.

The concept of Duty Factor is important in sonography, as it indicates how efficiently the ultrasound equipment is operating and can affect image quality and patient comfort. By stating the Duty Factor in percentage terms, it provides a clear understanding of how often the ultrasound is actively emitting sound waves compared to the time it is either waiting or receiving echoes.

Thus, saying that Duty Factor is measured in "none; percent" correctly captures its unit-less nature while also highlighting its practical application in percent form, making it clear and applicable for those in the field.