How many dimensions are represented in a B-scan image?

A B-scan image is a type of two-dimensional image that is commonly used in ultrasound imaging. In a B-scan, the 'B' stands for 'brightness,' and it represents the varying levels of intensity of sound waves reflected back from tissue interfaces at different depths. The image is generated by plotting these intensity levels across a plane, where one dimension typically represents depth (along the vertical axis) and the other dimension represents the lateral position of the ultrasound probe (along the horizontal axis).

This two-dimensional representation allows for the visualization of structures in a cross-sectional view, providing important information about the anatomy and any potential pathologies present in tissues. While additional dimensions such as time or color can be incorporated in other imaging modalities or within the context of a 3D rendering, a standard B-scan image itself conveys information in two dimensions. Hence, two dimensions are represented in a B-scan image.