Abstract: In one general aspect, biometric information and location information associated with the biometric information are received. An individual is identified based, at least in part, on the biometric information. The individual is verified to be at a predetermined location and a predetermined time based, at least in part, on the location information.

Abstract: The invention includes a device (20) for detection of respiratory, cardiac, and/or other motion of a subject (32) during acquisition of an magnetic resonance image that includes a lever (22) having a proximal (23) and a distal end (25), a counterweight (26) on the proximal end of the lever, a fulcrum (24), a pickup coil (28) attached to the distal end of the lever, and a MRI machine (30) that has a radio frequency resonator, a gradient coil, and a magnetic field, wherein the lever (22), fulcrum (24), counterweight (26), and pickup coil (28) are positioned so that the lever (22) moves as the subject (20) breathes, the pickup coil (28) is also positioned so that it does not cause artifacts in the MRI image, and the device (20) as a whole generates an electrical signal that can be used to detect and monitor the respiratory motion of the subject (20).

Abstract: The invention includes a device for detection of respiratory motion of a subject during acquisition of an magnetic resonance image that includes a lever having a proximal and a distal end, a counterweight on the proximal end of the lever, a fulcrum, a pickup coil attached to the distal end of the lever, and a MRI machine that has a radio frequency resonator, a gradient coil, and a magnetic field, wherein the lever, fulcrum, counterweight, and pickup coil are positioned so that the lever moves as the subject breathes, the pickup coil is also positioned so that it does not cause artifacts in the MRI image, and the device as a whole generates an electrical signal that can be used to detect and monitor the respiratory motion of the subject.

Abstract: The invention includes a device for detection of respiratory motion of a subject during acquisition of an magnetic resonance image that includes a lever having a proximal and a distal end, a counterweight on the proximal end of the lever, a fulcrum, a pickup coil attached to the distal end of the lever, and a MRI machine that has a radio frequency resonator, a gradient coil, and a magnetic field, wherein the lever, fulcrum, counterweight, and pickup coil are positioned so that the lever moves as the subject breathes, the pickup coil is also positioned so that it does not cause artifacts in the MRI image, and the device as a whole generates an electrical signal that can be used to detect and monitor the respiratory motion of the subject.