With a linear phased array transducer there are as many as _________ that are arranged along the face of the probe.

With a linear phased array transducer there are as many as _________ that are arranged along the face of the probe.

• A. 50-100
• B. 100-300
• C. 300-500
• D. 600-900

Answer: (B)

The main idea is how many elements are lined up along the face of a linear phased array transducer. In phased arrays, many tiny elements are packed in a row on the probe face to create and shape the beam by applying precise timing to each element, enabling steering and focusing. In practice, the number of elements on typical linear probes sits in the hundreds, with common designs using about 128 or 256 elements, so a range of roughly 100 to 300 elements covers the usual, commercially available probes. Having this many elements gives a good balance between steering capability, image resolution, and practical channel count. If there were far fewer elements, steering and lateral resolution would degrade; if there were substantially more, it would be uncommon for standard linear probes and would raise cost and complexity.

The main idea is how many elements are lined up along the face of a linear phased array transducer. In phased arrays, many tiny elements are packed in a row on the probe face to create and shape the beam by applying precise timing to each element, enabling steering and focusing. In practice, the number of elements on typical linear probes sits in the hundreds, with common designs using about 128 or 256 elements, so a range of roughly 100 to 300 elements covers the usual, commercially available probes. Having this many elements gives a good balance between steering capability, image resolution, and practical channel count. If there were far fewer elements, steering and lateral resolution would degrade; if there were substantially more, it would be uncommon for standard linear probes and would raise cost and complexity.