What is the term for the storage of echo information within the ultrasound system?

• A. Memory
• B. Cache
• C. Buffer
• D. Register

Answer: (A)

The storage of echo information inside the ultrasound system is handled by memory. After echoes are received and digitized, the data are kept in memory so the system can manage processing, frame construction, and display. This memory includes the working RAM and any image or frame buffers that hold data during imaging and storage for later use.

A cache is a small, fast storage area used to speed access to recently used data, not the primary repository for the full echo dataset. A buffer serves as a temporary holding area for data during transfer or processing, but it isn’t the long-term storage location for all echo information. A register is a tiny storage site inside the processor used for quick arithmetic and control operations, far too small to store the whole echo data set.