Head Impact Telemetry System (HITs) (IMAGE) Radiological Society of North America Caption HITs helmet-mounted accelerometers are used in youth and collegiate football to assess the frequency and severity of helmet impacts. Credit RSNA Usage Restrictions May use with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.