Patent ID: 11911612
Assignee: NOVOCURE GMBH
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 9:
10. A method of planning a treatment using alternating electric fields at a given frequency in a portion of a subject's body, the method comprising the steps of:
(a) obtaining at least one image of the portion;
(b) generating, based on the obtained at least one image, a 3D model of electrical conductivity or resistivity at the given frequency within the portion;
(c) identifying a target volume within the 3D model, the target volume including a plurality of voxels;
(d) adding a first set of model electrodes to the 3D model, with the first set of model electrodes positioned at a first set of locations with respect to the 3D model;
(e) determining, for each of the voxels in the target volume, a smaller one of first and second power loss densities that will be present when the first set of model electrodes positioned at the first set of locations is used to impose an alternating electric field in the target volume with first and second orientations, respectively;
(f) adding a second set of model electrodes to the 3D model, with the second set of model electrodes positioned at a second set of locations with respect to the 3D model; and
(g) determining, for each of the voxels in the target volume, a smaller one of first and second power loss densities that will be present when the second set of model electrodes positioned at the second set of locations is used to impose an alternating electric field in the target volume with first and second orientations, respectively; and
(h) selecting a set of locations for the electrodes based on results of step (e) and step (g),
wherein the given frequency is between 100 kHz and 300 kHz.