Early identification of intracranial hematomas in patients with traumatic brain injury is crucial for the successful outcome of the intervention. Infrascanner is a hand-held, noninvasive, near-infrared based mobile imaging device to detect brain hematoma within the “golden period.” This refers to the period following head trauma where assessment of the neurological condition and medical intervention of a victim is most needed and can significantly reduce the mortality and morbidity rate. In Infrascanner, hematoma detection is based on the differential light absorption of the injured versus the noninjured part of brain. When extravascular blood is present due to internal bleeding, there is a greater local concentration of hemoglobin that results in greater absorbance of the light on the bleeding side of the brain as compared with the contralateral uninjured side. This differential can be detected via sources and detectors placed on symmetrical lobes of the skull noninvasively. In a multicenter study, Infrascanner demonstrated high sensitivity (88%) and specificity (91%) in detecting intracranial hematomas larger than 3.5 ml in volume and less than 2.5 cm from the surface of the brain. These results suggest that this technology may be useful to supplement clinical information such as neurological examination in determining need for and urgency of further imaging studies. Infrascanner is intended to be used as an adjunct to the standard diagnostic workup to aid the decision in prioritizing high risk patients with suspected hematomas for urgent CT scans and surgical interventions. It can further facilitate surgical intervention decisions in environments where access to CT scan is restricted or not available.
Infrascanner: Cost Effective, Mobile Medical Imaging System for Detecting Hemotomas
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Ayaz, H., Ben Dor, B., Solt, D., and Onaral, B. (June 15, 2011). "Infrascanner: Cost Effective, Mobile Medical Imaging System for Detecting Hemotomas." ASME. J. Med. Devices. June 2011; 5(2): 027540. https://doi.org/10.1115/1.3591407
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