|- Single crystal design
- Multi-element arrays
Mechanically swept, single crystal design
This is the simplest type of real-time imaging scanhead.
If the transmitting / receiving face of the transducer is made slightly concave, it can generate a concave wavefront, producing a degree of focusing in the ultrasonic beam. This will give improved lateral spatial resolution and energy concentration, increasing the reflected signal.
Disadvantages of this design are:
It is now common to use "linear array" multi-element ultrasound transducers.
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