Final answer:
Radial displacement refers to the distance between two points along a straight line, while longitudinal displacement refers to the distance moved along the length of a straight line. Radial displacements are used in ultrasound imaging, while longitudinal displacements are used in techniques such as Doppler ultrasound.
Step-by-step explanation:
a) What is radial displacement?
Radial displacement is the distance between an object and a reference point along a straight line that connects the two points.
b) What is longitudinal displacement?
Longitudinal displacement is the distance an object moves along the length of a straight line, also known as the axis.
c) How are radial and longitudinal displacements different?
Radial displacement refers to the distance between two points along a straight line, while longitudinal displacement refers to the distance moved along the length of a straight line. In other words, radial displacement involves movement perpendicular to the reference point, while longitudinal displacement involves movement parallel to the reference point.
d) When are radial and longitudinal displacements used in medical imaging?
In medical imaging, radial displacements are commonly used in ultrasound imaging to measure the distance between the transducer and internal structures. Longitudinal displacements, on the other hand, are used to track motion along the length of arteries or blood vessels in techniques such as Doppler ultrasound.