Subdicing is a technique used to overcome grating lobes. With subdicing each major transducer element is divided into smaller parts, each one being a half wave length.

A voxel is a volume element (volumetric and pixel) representing a value in the three dimensional space, corresponding to a pixel for a given slice thickness. Voxels are frequently used in the visualization and analysis of medical data. The ultrasound pixel intensity is proportional to the signal intensity of the appropriate voxel.

See also Slice Thickness Artifact.