Which transducer type is used to produce a linear array image with parallel scan lines?

Which transducer type is used to produce a linear array image with parallel scan lines?

• A. Curved linear array
• B. Phased array
• C. Sector
• D. Linear array

Answer: (D)

A linear array transducer is designed to emit and receive beams in parallel, so the scan lines run side by side across the image, producing a rectangular field with parallel lines. This straight, parallel arrangement gives uniform lateral resolution and a flat, linear image. A curved linear array has a curved footprint, which makes the image itself curved and the scan lines not strictly parallel. A sector image comes from steering beams with a phased array to create a wedge-shaped field, where lines fan out from a common point. So to achieve an image with parallel scan lines and a linear, rectangular appearance, the linear array transducer is the one used.

A linear array transducer is designed to emit and receive beams in parallel, so the scan lines run side by side across the image, producing a rectangular field with parallel lines. This straight, parallel arrangement gives uniform lateral resolution and a flat, linear image.

A curved linear array has a curved footprint, which makes the image itself curved and the scan lines not strictly parallel. A sector image comes from steering beams with a phased array to create a wedge-shaped field, where lines fan out from a common point. So to achieve an image with parallel scan lines and a linear, rectangular appearance, the linear array transducer is the one used.