Adjusting depth is an important first step in optimizing your image. If the depth is too shallow pathology may be outside the field of view and missed. When the depth is set too deep the area of interest is small and it is difficult to evaluate for pathology. Once the image depth is optimized,, the Gain, or overall brightness of the image may need to be adjusted. When an image is under gained structures are dark, details are lost. In an over gained image false echoes will appear in structures making it difficult to differentiate pathology.