In the scan converter, interpolation is performed to:

In the scan converter, interpolation is performed to:

• A. Amplify the reflected signal in comparison to the background noise
• B. Decrease the dynamic range to a level that can be handled by the monitor
• C. Amplify weak echo signals from deep structures to compensate for beam attenuation
• D. Fill in the empty pixels that occur between scan lines

Answer: (D)

Interpolation in the scan converter fills in the empty pixels between scan lines to produce a complete, smooth image on a rectangular display. The ultrasound data come in as discrete scan lines from the transducer, leaving gaps when mapped to the display grid. Interpolation estimates the values in those gaps by using neighboring line information, which smooths the image and improves apparent spatial resolution. This process doesn’t change the actual echo strengths or adjust dynamic range; it’s about creating a coherent picture by filling in data where measurements weren’t taken.

Interpolation in the scan converter fills in the empty pixels between scan lines to produce a complete, smooth image on a rectangular display. The ultrasound data come in as discrete scan lines from the transducer, leaving gaps when mapped to the display grid. Interpolation estimates the values in those gaps by using neighboring line information, which smooths the image and improves apparent spatial resolution. This process doesn’t change the actual echo strengths or adjust dynamic range; it’s about creating a coherent picture by filling in data where measurements weren’t taken.