A sector with a given depth, sector width and line density determines the frame rate. Reducing sector width, but maintaining the line density, gives unchanged lateral resolution but higher frame rate, at the cost of field of view.

Basic transducer formats are sector, linear array, and curved array . Sector transducers produce slice-of-pie-shaped images that are narrow in the near-field but have a wide view in the far-field . These transducers are optimal for examining larger organs from between the ribs.

Linear, sector, and curved array are three formats of a transducer that determine the shape and field of view. Linear array transducers produce rectangular images and offer the best overall image quality. Sector array transducers produce slice-of-pie-shaped images and are optimal for examining larger organs from between the ribs.

Results: The linear-array probe had the highest performance in the identification of pneumothorax (83% sensitivity, 100% specificity, and 99% diagnostic accuracy) and pleural effusion (100% sensitivity, 97% specificity, and 98% diagnostic accuracy); the sector probe had the highest performance in the identification of consolidation (89% ...

Essentially, the design of an ultrasound unit is based on the intended transducers of use. Transducers can be grouped more generally into two main categories: (1) sector type and (2) linear array. Sector-Type Transducers. The sector (or phased array) transducer generates a cone-shaped image format with the sound source originating from a small ...