Which system component is primarily responsible for converting received echoes into a format suitable for display, including grayscale mapping?

Which system component is primarily responsible for converting received echoes into a format suitable for display, including grayscale mapping?

• A. Pulser
• B. Memory
• C. Receiver
• D. Scan converter

Answer: (D)

The key idea is turning the processed echo data into a displayable image by placing echo amplitudes into a 2D grid and assigning brightness values to represent their strength. After the receiver shapes the echoes, the scan converter maps those line-by-line values from the probe’s radial scan geometry into the display’s rectangular image, performing any needed resampling or interpolation. It also translates the echo amplitudes into grayscale brightness, so brighter echoes appear lighter on the screen. This coordinate transformation and grayscale mapping are exactly what makes the image visually coherent for diagnosis. The pulser, memory, and receiver perform other essential roles, but the task of formatting the echoes for display, including grayscale mapping, sits with the scan converter.

The key idea is turning the processed echo data into a displayable image by placing echo amplitudes into a 2D grid and assigning brightness values to represent their strength. After the receiver shapes the echoes, the scan converter maps those line-by-line values from the probe’s radial scan geometry into the display’s rectangular image, performing any needed resampling or interpolation. It also translates the echo amplitudes into grayscale brightness, so brighter echoes appear lighter on the screen. This coordinate transformation and grayscale mapping are exactly what makes the image visually coherent for diagnosis. The pulser, memory, and receiver perform other essential roles, but the task of formatting the echoes for display, including grayscale mapping, sits with the scan converter.