Table 2.

Different types of ultrasound probes with their characteristics and uses.

Type	Characteristics and Uses
Linear	Active elements are arranged in a line; They generate a rectangular scan field; They work at high frequencies (from 7.5 to 16 MHz); Used to study superficial structures (i.e., muscles, tendons, breast, thyroid).
Convex	Active elements of the transducer are arranged on an arc of circumference; They generate a trapezoidal-shaped scan area; They work at medium and low frequencies (from 3.5 to 5 MHz); Used for the study of deeper structures (i.e., visceral organs).
Sectorial	Active elements are aligned in a short band or rectangle configuration; They generate a fan-shaped beam; They work at low frequencies (from 2 to 3.5 MHz); Usually used for cardiac examination.
Endocavitary	They can be linear or convex; Used for intrarectal or intravaginal examinations; They work at medium frequencies (from 5 to 7.5 MHz).