Here's how to get buy-in for ultrasound.
D004059:Diffusion of Innovation; D004636:Emergency Service, Hospital / Q000191:economics / Q000592:standards*; D006801:Humans; D007449:Investments; D017410:Practice Guidelines as Topic; D014463:Ultrasonography / Q000191:economics / Q000706:statistics & numerical data*; D014481:United States