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1. An image chamber unit for gathering measurement data pertaining to a human head in an electromagnetic tomography (EMT) system, comprising:
(a) an antenna assembly at least partially defining a horizontally-oriented imaging chamber and including an array of antennas arranged around the imaging chamber, the array of antennas including at least some transmitting antennas and at least some receiving antennas, wherein the transmitting antennas transmit a low power electromagnetic field, wherein the receiving antennas receive the low power electromagnetic field after passing through a human head in the imaging chamber and provide corresponding signals to a control system so as to produce a data tensor that may be inversed to reconstruct a 3D distribution of dielectric properties within the human head and thereby to create an image of the object; and (b) a housing, at least partially containing the antenna assembly, having a front entry opening into the imaging chamber; (c) wherein the head of a human patient may be inserted horizontally through the front entry opening and into the imaging chamber.
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