ARDMS Ultrasound Physics & Instrumentation Practice Exam 2025 - Free Ultrasound Practice Questions and Study Guide

Gain control in ultrasound imaging is primarily used to adjust the overall brightness of the image. This function allows the operator to amplify the received echoes that are translated into the image, ensuring that structures of interest are clearly visible. By controlling the gain, the sonographer can manage the brightness levels to optimize the visualization of tissues and structures at varying depths and reflectivity, helping to create a more diagnostically useful image.

Proper gain settings are crucial for achieving the best possible image quality, as incorrect gain levels can result in underexposed images where important details are lost or overexposed images where details are obscured. Therefore, adjusting gain effectively enhances the image's diagnostic quality by making sure that soft tissue contrast is appropriately represented. This adjustment plays a vital role in the interpretation of various tissues, ultimately aiding in making accurate assessments during ultrasound examinations.