What is another term for elevational resolution?

What is another term for elevational resolution?

• A. Slice thickness
• B. Axial resolution
• C. Lateral resolution
• D. Image depth

Answer: (A)

Elevational resolution is determined by the thickness of the ultrasound slice in the out-of-plane direction. That thickness is called slice thickness, so that term best matches elevational resolution. If the slice is thick, structures that are stacked in the elevation direction can blur together due to partial-volume effects, reducing elevational resolution; making the slice thinner improves it. Axial resolution is about separation along the beam path (range), and depends on the spatial pulse length. Lateral resolution concerns separation across the image plane and is influenced by beam width and focusing. Image depth refers to how deep the image extends and is not itself a measure of resolution.

Elevational resolution is determined by the thickness of the ultrasound slice in the out-of-plane direction. That thickness is called slice thickness, so that term best matches elevational resolution. If the slice is thick, structures that are stacked in the elevation direction can blur together due to partial-volume effects, reducing elevational resolution; making the slice thinner improves it. Axial resolution is about separation along the beam path (range), and depends on the spatial pulse length. Lateral resolution concerns separation across the image plane and is influenced by beam width and focusing. Image depth refers to how deep the image extends and is not itself a measure of resolution.