Patent ID: 11890097
Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An inductive sensor apparatus for brain diagnostics comprising:
a first sensor coil connected with a first resistive, inductive, and capacitive (RLC) circuit and first frequency counter;
a second sensor coil connected with a second RLC circuit and second frequency counter, the second sensor coil having a larger or smaller diameter than the first sensor coil, the first and second sensor coils forming a sensor unit;
a memory storing control values derived from prior sensor coil measurements of one or more normal brains in vivo, each control value associated with a corresponding cranial location;
a computer processor operatively connected with a machine-readable non-transitory medium embodying information indicative of instructions for causing the computer processor to perform operations comprising:
generating measure values based on outputs from the first and second frequency counters when the sensor unit is at a cranial location;
determining the cranial location at which the measured values are associated;
retrieving, from the memory, control values associated with the cranial location;
comparing the measured values to the control values to generate deltas;
comparing the deltas to a positive threshold and a negative threshold associated with each cranial location to ascertain an exceedance, the exceedance having a sign and a magnitude; and
outputting an indication based on the sign of the exceedance, and an indicator or display connected with the computer processor for the indications.