Answer:
True.
Step-by-step explanation:
In medical imaging, including ultrasound, grayscale settings can typically be adjusted by the sonographer. Grayscale is used to represent different shades of gray in an image, with each shade corresponding to a specific level of echogenicity (the ability to reflect sound waves). Adjusting the grayscale settings allows the sonographer to enhance or reduce the contrast in the ultrasound image, making it easier to visualize and interpret anatomical structures. These adjustments can include changing the brightness, contrast, and overall image quality to optimize the diagnostic information provided by the ultrasound examination.