Clinical decision rule for reducing number of head CT's ordered for adults with blunt head trauma.

Head CT is not necessary if NONE of the following:

 

Derivation trial:

 

Validation trial:

Mower, W et al. Developing a Decision Instrument to Guide Computed Tomographic Imaging of Blunt Head Injury Patients. J Trauma. 2005; 59: 954–959. Text

Sun Ro, Y et al. Comparison of Clinical Performance of Cranial Computed Tomography Rules in Patients With Minor Head Injury: A Multicenter Prospective Study. Acad Emerg Med. 2011; 18: 597–604.