An array comprises a single slab of PZT cut into a collection of separate pieces called _______.

An array comprises a single slab of PZT cut into a collection of separate pieces called _______.

• A. Elements
• B. Crystals
• C. Tiles
• D. Chips

Answer: (A)

The key idea is understanding how piezoelectric arrays are built. When a single slab of PZT is sliced into multiple separate pieces, each piece becomes an independent actuator in the array. These individual pieces are called elements. Driving each element separately lets you shape and steer the ultrasound beam, which is the core function of an array. That’s why the term elements fits best: it denotes the repeatable, discrete units that compose the transducer. The other terms don’t match this context—crystals would imply one continuous piece, tiles isn’t the standard term for transducer construction, and chips usually refer to electronic circuitry rather than piezoelectric blocks.

The key idea is understanding how piezoelectric arrays are built. When a single slab of PZT is sliced into multiple separate pieces, each piece becomes an independent actuator in the array. These individual pieces are called elements. Driving each element separately lets you shape and steer the ultrasound beam, which is the core function of an array.

That’s why the term elements fits best: it denotes the repeatable, discrete units that compose the transducer. The other terms don’t match this context—crystals would imply one continuous piece, tiles isn’t the standard term for transducer construction, and chips usually refer to electronic circuitry rather than piezoelectric blocks.