Which sequence correctly represents the order in which system components are activated to generate a sonographic image?

Which sequence correctly represents the order in which system components are activated to generate a sonographic image?

• A. Pulser, beam former, receiver, memory, display
• B. Pulser, beam former, receiver, display, memory
• C. Beam former, Pulser, memory, receiver, display
• D. Memory, beam former, Pulser, receiver, display

Answer: (A)

This sequence reflects the true signal path from emission to image display in an ultrasound system. The pulser activates first to send a voltage to the transducer, creating the initial acoustic pulse. The beam former follows, shaping and steering the transmitted beam and coordinating timing and focusing for the received echoes as well. When echoes return, the receiver amplifies and processes those signals to a usable form. The digital memory then stores the processed data, frame by frame, so it can be organized into an image. Finally, the display converts the stored data into the visual image you see. Because you must emit a pulse before any reception, and you need amplified, digitized data stored before you can render an image, this order—pulser, beam former, receiver, memory, display—best fits how the system actually operates.

This sequence reflects the true signal path from emission to image display in an ultrasound system. The pulser activates first to send a voltage to the transducer, creating the initial acoustic pulse. The beam former follows, shaping and steering the transmitted beam and coordinating timing and focusing for the received echoes as well. When echoes return, the receiver amplifies and processes those signals to a usable form. The digital memory then stores the processed data, frame by frame, so it can be organized into an image. Finally, the display converts the stored data into the visual image you see.

Because you must emit a pulse before any reception, and you need amplified, digitized data stored before you can render an image, this order—pulser, beam former, receiver, memory, display—best fits how the system actually operates.