Randomized Controlled Trial

Does the presence of ultrasound really affect computed tomographic scan use? A prospective randomized trial of ultrasound in trauma.

J Trauma. 2001 Sep 1;51(3):545-50.
Article

FAST scan: is it worth doing in hemodynamically stable blunt trauma patients?

Surgery. 2010 Oct 1;148(4):695-700; discussion 700-1.
Article

Prospective evaluation of non-radiologist performed emergency abdominal ultrasound for haemoperitoneum.

Emerg Med J. 2004 Sep 1;21(5):e5.