In what order and why that a sonographer should make when scanning a patient if the image is too dark?

The image appears too dark and the gain needs to be increased. ... of view is decreased) but may be adjusted on the machine to a lower rate if desired. ++ After freezing the scan, the sonographer canadd text, make measurements or ... Probe covers or sheaths protect probes from contamination and thepatient 

1)harmony-a2)balance-e3)asymmetrical balance-b4)abstract-c5)approximate symmetry-d