______ is the time to complete one cycle.

______ is the time to complete one cycle.

• A. Pulse Duration
• B. Pulse Period
• C. Period
• D. Duration Period

Answer: (C)

Period is the time it takes for the wave to complete one cycle. It’s the duration of a single oscillation, and it’s the reciprocal of frequency (Period = 1 / f). So a higher frequency means a shorter period; for example, a 5 MHz wave has a period of about 0.2 microseconds. In pulsed ultrasound, this concept still applies to each cycle within the pulse, but other terms describe different timing. Pulse duration is how long the pulse is actually emitted (the on-time of the pulse), while pulse period is the time from the start of one pulse to the start of the next pulse (including the off-time). The term duration period isn’t a standard term.

Period is the time it takes for the wave to complete one cycle. It’s the duration of a single oscillation, and it’s the reciprocal of frequency (Period = 1 / f). So a higher frequency means a shorter period; for example, a 5 MHz wave has a period of about 0.2 microseconds.

In pulsed ultrasound, this concept still applies to each cycle within the pulse, but other terms describe different timing. Pulse duration is how long the pulse is actually emitted (the on-time of the pulse), while pulse period is the time from the start of one pulse to the start of the next pulse (including the off-time). The term duration period isn’t a standard term.