The digital scan converter has a number of pixels assigned to each bit.

The digital scan converter has a number of pixels assigned to each bit.

• A. True
• B. Not applicable
• C. Depends on the device
• D. False

Answer: (D)

A digital scan converter stores image brightness by assigning a fixed number of bits to represent each pixel. This bit depth determines how many gray levels you can display for that one pixel. The idea you’re testing is about “pixels per bit,” but the correct relationship is the opposite: each pixel has a set number of bits to encode its brightness, not that a single bit controls multiple pixels. In practice, ultrasound systems use 8 or 16 bits per pixel (and sometimes more in high-dynamic-range imaging), which gives 256 or 65,536 possible brightness levels per pixel. If you imagined a fixed bit controlling multiple pixels, the brightness resolution would collapse, which isn’t how the digital scan converter operates. Therefore, the statement is false.

A digital scan converter stores image brightness by assigning a fixed number of bits to represent each pixel. This bit depth determines how many gray levels you can display for that one pixel. The idea you’re testing is about “pixels per bit,” but the correct relationship is the opposite: each pixel has a set number of bits to encode its brightness, not that a single bit controls multiple pixels. In practice, ultrasound systems use 8 or 16 bits per pixel (and sometimes more in high-dynamic-range imaging), which gives 256 or 65,536 possible brightness levels per pixel. If you imagined a fixed bit controlling multiple pixels, the brightness resolution would collapse, which isn’t how the digital scan converter operates. Therefore, the statement is false.