Final answer:
In an ultrasound scan, when the depth of view is increased, most parameters associated with the ultrasound waves do not change. However, operational parameters like Pulse Repetition Frequency (PRF) and Duty Factor might adjust to account for the increased depth of view. Pulse Repetition Period will increase to accommodate the longer time needed for deeper echoes to return.
Step-by-step explanation:
When adjusting the depth of view on an ultrasound scanner, most parameters relating to the ultrasound waves themselves would not change, as they are inherent properties of the machine and the settings it operates under. However, some operational parameters can change based on how the machine is set to capture images at different depths. Period (T) - Remains the same, it's the inverse of frequency and determined by the source.
Frequency (f) - Remains the same, it is a set characteristic of the ultrasound equipment.
Wavelength (λ) - Remains the same, it is determined by the frequency and the speed of sound in the tissue.
Speed (c) - Remains the same, as the speed of sound in a given medium is constant.
Amplitude - Typically remains the same unless gain settings are adjusted.
Pulse Duration - Remains the same, as it is determined by the frequency and number of cycles in a pulse.
Pulse Repetition Frequency (PRF) - Could increase, since a greater depth requires a longer time for echoes to return, which could lower PRF.
Duty Factor - Could decrease, as increased depth requires a longer listening time between pulses, leading to a lower duty factor.
Spatial Pulse Length - Remains the same, as it is related to the number of cycles and wavelength.
Pulse Repetition Period - Increases, more time is needed between pulses to allow deeper echoes to return.