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Ultrasound is widely used in emergency and trauma care because it can provide rapid information at a patient's bedside. One of its most common applications is the focused assessment with sonography for trauma (FAST) examination, which helps clinicians look for signs of internal bleeding and free fluid in injured patients.

However, ultrasound is highly dependent on the operator. Obtaining useful images requires knowledge of anatomy, probe positioning and hand movements, making the technique difficult for inexperienced users to learn. Research published in the Journal of Medical Imaging describes a new system designed to help novice users locate the correct ultrasound views more reliably during trauma examinations.

The research team, led by the Johns Hopkins University Applied Physics Laboratory, developed an anatomically guided ultrasound acquisition system that combines a subject-specific predictive anatomical model with real-time ultrasound imaging and mixed-reality guidance. The goal was to help novice users position and orient the ultrasound probe, even when prior medical imaging of the patient is not available.

The system uses external body measurements to generate a predicted model of the individual's internal anatomy and aligns that model with the body. As the user moves the tracked ultrasound probe, a mixed-reality headset displays live imaging and anatomical information to guide probe placement and movement. The researchers focused on trauma ultrasound because the exam requires several standardized views that can be challenging for beginners to obtain consistently.

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