Fig. 3.

Convex and linear transducer. Left image: convex transducer with frequency of 3 to 5 MHz. They have a curved array that allows wider field of view. These are used for abdominal scans and have deeper penetration due to low frequency. Right image: linear transducers have a flat array and appearance. They have high frequency and are useful for small parts and shallow structures near the surface of the body. They produce a rectangular image with frequency ranging from 9 to 14 MHz