The term for a transducer that has an array of rectangular elements arranged in a straight line is:

The term for a transducer that has an array of rectangular elements arranged in a straight line is:

• A. Annular array
• B. Linear array
• C. Curved array
• D. Oscillating mechanical transducer

Answer: (B)

In ultrasound, the arrangement of the transducer elements defines the beam handling. A straight-line setup of multiple rectangular elements is a linear array. This geometry is designed for electronic focusing and steering along the imaging plane, producing a single, narrow beam across the width of the image. Annular arrays use concentric circular rings, not a straight line. Curved arrays place elements along a curved path to conform to anatomy and improve elevation focusing. An oscillating mechanical transducer relies on a single element scanned by motion, not an arranged line of rectangular elements. So, the transducer described—the one with rectangular elements arranged in a straight line—fits the linear array concept.

In ultrasound, the arrangement of the transducer elements defines the beam handling. A straight-line setup of multiple rectangular elements is a linear array. This geometry is designed for electronic focusing and steering along the imaging plane, producing a single, narrow beam across the width of the image.

Annular arrays use concentric circular rings, not a straight line. Curved arrays place elements along a curved path to conform to anatomy and improve elevation focusing. An oscillating mechanical transducer relies on a single element scanned by motion, not an arranged line of rectangular elements.

So, the transducer described—the one with rectangular elements arranged in a straight line—fits the linear array concept.