A compact and clonable ultrasound-based sensor system to monitor physiological motion

Physiological motion continues to be a problem in MRI and PET, as it can cause blurring and other types of artifacts. We developed a compact, clonable ultrasound-based sensor system that monitors internal motion directly. Alternative means of motion monitoring often involve hardware (including the scanner itself) that is attached to floors, walls and/or ceilings and thus cannot follow the patient from one room to another, from one procedure to the next. The present sensors attach to the skin, they can follow the patient, and as such they may help link different procedures in ways that take internal motion into account.