Which of the following could be used to increase the color frame rate for a cardiac image?

• A. Decrease the image width
• B. Decrease the packet size
• C. Decrease the line density
• D. All of the above

Answer: (D)

Color frame rate is governed by how much data must be captured and transmitted per frame. If you reduce the amount of data per frame, you can display more frames each second. Decreasing the image width cuts the field of view and the number of scan lines across the image, so there’s less data to acquire and render each frame, which speeds up the rate. Lowering line density reduces the number of scan lines used to form the image, again cutting data per frame and increasing how quickly frames can be generated. Smaller packet sizes decrease the data payload per transmission, which can reduce transmission time and processing delay, boosting throughput and frame rate. Because each of these changes lowers the data load per frame or per transmission, all of them could be used to increase the color frame rate.