Elevational resolution affects the ability to distinguish structures in which direction?

Elevational resolution affects the ability to distinguish structures in which direction?

• A. Along the beam path
• B. Perpendicular to the beam path
• C. Across the lateral width
• D. In time

Answer: (B)

Elevational resolution is about distinguishing structures in the direction out of the imaging plane—the dimension perpendicular to the path the ultrasound beam travels. In practice, that means it reflects how well we can separate two structures that lie above and below each other in the third dimension, outside the plane we’re viewing. This slice-thickness limitation is what sets elevational resolution, and it tends to be poorer when the slice is thick unless the transducer design or 3D/4D imaging provides better focusing or thinner slices. For context, axial resolution refers to separation along the beam path (depth), and lateral resolution refers to separation across the width of the image within the plane. Temporal resolution, meanwhile, concerns how quickly frames are acquired over time.

Elevational resolution is about distinguishing structures in the direction out of the imaging plane—the dimension perpendicular to the path the ultrasound beam travels. In practice, that means it reflects how well we can separate two structures that lie above and below each other in the third dimension, outside the plane we’re viewing. This slice-thickness limitation is what sets elevational resolution, and it tends to be poorer when the slice is thick unless the transducer design or 3D/4D imaging provides better focusing or thinner slices.

For context, axial resolution refers to separation along the beam path (depth), and lateral resolution refers to separation across the width of the image within the plane. Temporal resolution, meanwhile, concerns how quickly frames are acquired over time.