In this study, investigators look at a different type of technology that might help to avoid having to perform CT scans in certain patients suspected of having a head injury. Near-infrared spectroscopy (NIRS) uses a specific light wavelength to determine if there is bleeding into the head as a result of trauma. Investigators will study NIRS, using a device called the Infrascanner model 2000, to determine if it is as good at detecting bleeding in the head as CT scan, which is the current gold standard. Investigators will try to determine if NIRS can rule in or rule out bleeding into the head, and perhaps this can help to avoid subjecting these youth to the potentially harmful effects of radiation. Investigators will also study how easy it is to use NIRS so that it might become a standard part of the workup for children with suspected head injury.
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Sensitivity of NIRS Optical Density Measurement
Timeframe: Within 4 hours before or after CT scan
Specificity of NIRS Optical Density Measurement
Timeframe: Within 4 hours before or after CT scan
Predictive Values of NIRS Measurement
Timeframe: Within 4 hours before or after CT scan