Spatial resolution consists of which two components?

Spatial resolution consists of which two components?

• A. Contrast and Temporal resolution
• B. Temporal and Axial resolution
• C. Lateral and Axial resolution
• D. Axial and Contrast resolution

Answer: (C)

Spatial resolution is about how well you can distinguish two objects that are close together in space. It has two directions to consider: along the beam (axial) and across the beam (lateral). Axial resolution depends on the length of the emitted pulse; shorter pulse length (fewer cycles and shorter wavelengths) makes closely spaced points along the beam distinguishable. Lateral resolution depends on how wide the beam is; a narrower beam, achieved with focusing, provides better resolution across the image, especially at the focal point. Together, these two spatial directions define the smallest separable distance in the image. The other terms describe different kinds of detail: contrast resolution relates to grey-scale differences, and temporal resolution relates to how fast images are acquired over time, not the ability to separate points in space.

Spatial resolution is about how well you can distinguish two objects that are close together in space. It has two directions to consider: along the beam (axial) and across the beam (lateral). Axial resolution depends on the length of the emitted pulse; shorter pulse length (fewer cycles and shorter wavelengths) makes closely spaced points along the beam distinguishable. Lateral resolution depends on how wide the beam is; a narrower beam, achieved with focusing, provides better resolution across the image, especially at the focal point. Together, these two spatial directions define the smallest separable distance in the image. The other terms describe different kinds of detail: contrast resolution relates to grey-scale differences, and temporal resolution relates to how fast images are acquired over time, not the ability to separate points in space.