McEwan K, Thompson P. Ultrasound to detect haemothorax after chest injury. Emerg Med J 2007;24:581–582.

An error has occurred in this Best Evidence Topic report (BET) on page 581. In line 9 of the Comments section, the sentence should read as follows:

When compared directly to the supine chest x ray, ultrasound is shown to be more sensitive at detecting the presence of the haemothorax and is at least as specific and accurate.