Influence of Ultrasound System and Gain on Grayscale Median Values.
Catherine N SteffelRoger BrownClaudia E KorcarzTomy VargheseJames H SteinStephanie M WilbrandRobert J DempseyCarol C K MitchellPublished in: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine (2018)
Grayscale median measurements are highly reproducible when obtained from the same US system with similar gain settings. Grayscale median values differ significantly across gain values and between systems. Researchers should consider the impact of US system and gain settings on GSM values when working to minimize system- and operator-dependent factors.