| CPC A61B 5/245 (2021.01) [A61B 5/4064 (2013.01); A61B 5/70 (2013.01); A61B 5/721 (2013.01); A61B 2562/12 (2013.01)] | 20 Claims |
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15. A method of anatomically locating measurements in a subject's brain, the method comprising:
providing a headrest plinth configured to hold a head of a subject, the subject's head having a notional spherical center point, a first tilt gauge rigidly attached to the plinth, a gimbal armature pivotably attached to the plinth and configured to pivot a mounting point on the gimbal armature to latitudes and longitudes around the center point, a radial extender mounted to the mounting point of the gimbal armature, the radial extender configured to extend an end effector inward with respect to the center point, a coil sensor affixed to the end effector, a second tilt gauge affixed to the coil sensor, a resistive, inductive, and capacitive (RLC) circuit electrically connected with the coil sensor, and a frequency counter electrically connected with the RLC circuit;
comparing tilt angles from the first tilt gauge and the second tilt gauge to determine a relative orientation of the coil sensor; and
calculating a three-dimensional (3D) anatomical location of a measured value from the coil sensor based on the orientation.
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