System and methods of deep brain stimulation for post-operation patients
First Claim
1. A method for programming a deep brain stimulator implanted in a target region of a brain of a living subject for optimal stimulation, wherein the deep brain stimulator comprises at least one electrode having a plurality of electrode contacts spaced apart from each other, and wherein any portion of the brain of the living subject is identifiable by a set of corresponding spatial coordinates, comprising the steps of:
- (a) creating an efficacy atlas in which any spatial coordinates for a position in a target region of the brain of the living subject are related to a position with corresponding atlas coordinates in the efficacy atlas, and each position in the atlas coordinates of the efficacy atlas is associated with an efficacy of stimulation at a corresponding position in the spatial coordinates of the brain of the living subject;
(b) acquiring a position of each electrode contact of the at least one electrode in the spatial coordinates of the brain of the living subject;
(c) mapping the acquired position of each electrode contact of the at least one electrode in the spatial coordinates of the brain of the living subject onto a corresponding position in the efficacy atlas so as to determine the efficacy of stimulation at the acquired position in the spatial coordinates of the brain of the living subject; and
(d) selecting one or more electrode contacts having the highest efficacy for stimulation,wherein the efficacy of stimulation at a position in the spatial coordinates of the brain of the living subject isproportional to a percent of loss of rigidity, LR,proportional to a therapeutic window that equals to the difference between a voltage, V, applied to the position for achieving the loss of rigidity and a voltage, VSE, applied to the position for which side effects occur, andinversely proportional to the voltage V,wherein the efficacy of stimulation at a position is corresponding to the probability of the stimulation to be clinically effective at the position, andwherein the creating step (a) comprises the steps of;
(i) obtaining stimulation data corresponding to a target region in which a deep brain stimulator is implanted from a database, wherein the stimulation data comprise M×
N sets of intra-operatively acquired stimulation signals, {Vij, LijR, VijSE}, and their corresponding stimulation positions, {xj, yj, zj}, wherein i=1, 2, . . . , M, M being a positive integer and the number of a population of living subjects from which the stimulation signals are acquired and stored in the database, and j=1, 2, . . . , N, N being a positive integer and the number of positions at which the stimulation takes place for each of the population of living subjects, and wherein Vij, LijR, VijSE are a stimulation voltage, a percent of loss of rigidity caused by the stimulation voltage, and a voltage for which side effects occur, respectively, at the j-th stimulation position of the i-th living subject;
(ii) choosing a local efficacy of stimulation, Eij, at the j-th stimulation position (xj, yj, zj) for the i-th living subject with a Gaussian curve, Fij, in the form of;
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Abstract
A method for programming a deep brain stimulator implanted in a target region of a brain of a living subject. In one embodiment, the method comprises the steps of creating an efficacy atlas; acquiring a position of each electrode contact of the at least one electrode; mapping the acquired position of each electrode contact of the at least one electrode onto a corresponding position in the efficacy atlas so as to determine the efficacy of stimulation at the acquired position; and selecting one or more electrode contacts having the highest efficacy for stimulation.
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Citations
17 Claims
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1. A method for programming a deep brain stimulator implanted in a target region of a brain of a living subject for optimal stimulation, wherein the deep brain stimulator comprises at least one electrode having a plurality of electrode contacts spaced apart from each other, and wherein any portion of the brain of the living subject is identifiable by a set of corresponding spatial coordinates, comprising the steps of:
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(a) creating an efficacy atlas in which any spatial coordinates for a position in a target region of the brain of the living subject are related to a position with corresponding atlas coordinates in the efficacy atlas, and each position in the atlas coordinates of the efficacy atlas is associated with an efficacy of stimulation at a corresponding position in the spatial coordinates of the brain of the living subject; (b) acquiring a position of each electrode contact of the at least one electrode in the spatial coordinates of the brain of the living subject; (c) mapping the acquired position of each electrode contact of the at least one electrode in the spatial coordinates of the brain of the living subject onto a corresponding position in the efficacy atlas so as to determine the efficacy of stimulation at the acquired position in the spatial coordinates of the brain of the living subject; and (d) selecting one or more electrode contacts having the highest efficacy for stimulation, wherein the efficacy of stimulation at a position in the spatial coordinates of the brain of the living subject is proportional to a percent of loss of rigidity, LR, proportional to a therapeutic window that equals to the difference between a voltage, V, applied to the position for achieving the loss of rigidity and a voltage, VSE, applied to the position for which side effects occur, and inversely proportional to the voltage V, wherein the efficacy of stimulation at a position is corresponding to the probability of the stimulation to be clinically effective at the position, and wherein the creating step (a) comprises the steps of; (i) obtaining stimulation data corresponding to a target region in which a deep brain stimulator is implanted from a database, wherein the stimulation data comprise M×
N sets of intra-operatively acquired stimulation signals, {Vij, LijR, VijSE}, and their corresponding stimulation positions, {xj, yj, zj}, wherein i=1, 2, . . . , M, M being a positive integer and the number of a population of living subjects from which the stimulation signals are acquired and stored in the database, and j=1, 2, . . . , N, N being a positive integer and the number of positions at which the stimulation takes place for each of the population of living subjects, and wherein Vij, LijR, VijSE are a stimulation voltage, a percent of loss of rigidity caused by the stimulation voltage, and a voltage for which side effects occur, respectively, at the j-th stimulation position of the i-th living subject;(ii) choosing a local efficacy of stimulation, Eij, at the j-th stimulation position (xj, yj, zj) for the i-th living subject with a Gaussian curve, Fij, in the form of; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for programming a deep brain stimulator implanted in a target region of a brain of a living subject for optimal stimulation, wherein the deep brain stimulator comprises at least one electrode having a plurality of electrode contacts, comprising the step of:
(a) creating an efficacy atlas in which a position in atlas coordinates of the efficacy atlas is related to a corresponding position in spatial coordinates of the brain of the living subject, and each position in atlas coordinates of the efficacy atlas is associated with an efficacy of stimulation at a corresponding position in spatial coordinates of the brain of the living subject, comprising the steps of; (i) obtaining stimulation data corresponding to a target region in which a deep brain stimulator is implanted from a database, wherein the stimulation data comprise M×
N sets of intra-operatively acquired stimulation signals, {Vij, LijR, VijSE}, and their corresponding stimulation positions, {xj, yj, zj}, wherein i=1, 2, . . . , M, M being a positive integer and the number of a population of living subjects from which the stimulation signals are acquired and stored in the database, and j=1, 2, . . . , N, N being a positive integer and the number of positions at which the stimulation takes place for each of the population of living subjects, and wherein Vij, LijR, VijSE are a stimulation voltage, a percent of loss of rigidity caused by the stimulation voltage, and a voltage for which side effects occur, respectively, at the j-th stimulation position of the i-th living subject;(ii) choosing a local efficacy of stimulation, Eij, at the j-th stimulation position (xj, yj, zj) for the i-th living subject with a Gaussian curve, Fij, in the form of; - View Dependent Claims (13, 14, 15, 16, 17)
Specification