Image-guided therapy of a tissue
First Claim
1. A method for effecting thermal therapy using an in vivo probe, comprising:
- identifying a three-dimensional region of interest at which to apply thermal therapy;
positioning the probe in a volume in the patient through a removable guide stem, wherein the volume is adjacent to or included in the three-dimensional region of interest;
identifying, by processing circuitry, a treatment profile for effecting thermal therapy to the three-dimensional region of interest, wherein the treatment profile comprises i) a plurality of target positions, and ii) for each target position of the plurality of target positions, one or more of a respective power level, a respective energy level, a respective emission pattern, a respective time period, and a respective geometry of a target area of the three-dimensional region of interest;
deploying, through a first distal opening of at least one distal opening of the guide stem, the probe to the three-dimensional region of interest at a first radial trajectory corresponding to a first target position of the plurality of target positions according to the treatment profile; and
applying, by the processing circuitry, thermal therapy to the volume using the probe according to the treatment profile, wherein applying the thermal therapy comprisesa) activating delivery of therapeutic energy by the probe to the three-dimensional region of interest at the first target position,b) after delivery of therapeutic energy, retracting the probe into the guide sheath;
c) causing actuation of the probe, in the guide sheath, to adjust at least one of a linear position and a rotational position of the probe to select a next radial position,d) deploying the probe, through a next distal opening of the guide stem, to the three-dimensional region of interest at the next radial trajectory corresponding to a next target position of the plurality of target positions according to the treatment profile,e) activating delivery of therapeutic energy to the three-dimensional region of interest at the next target position according to the treatment profile, andrepeating steps (b) through (e) until therapeutic energy is delivered to at least a first volume of the three-dimensional region of interest.
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Accused Products
Abstract
Image-guided therapy of a tissue can utilize magnetic resonance imaging (MRI) or another medical imaging device to guide an instrument within the tissue. A workstation can actuate movement of the instrument, and can actuate energy emission and/or cooling of the instrument to effect treatment to the tissue. The workstation and/or an user of the workstation can be located outside a vicinity of an MRI device or other medical imaging device, and drive means for positioning the instrument can be located within the vicinity of the MRI device or the other medical imaging device. The instrument can be an MRI compatible laser or high-intensity focused ultrasound probe that provides thermal therapy to, e.g., a tissue in a brain of a patient.
626 Citations
25 Claims
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1. A method for effecting thermal therapy using an in vivo probe, comprising:
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identifying a three-dimensional region of interest at which to apply thermal therapy; positioning the probe in a volume in the patient through a removable guide stem, wherein the volume is adjacent to or included in the three-dimensional region of interest; identifying, by processing circuitry, a treatment profile for effecting thermal therapy to the three-dimensional region of interest, wherein the treatment profile comprises i) a plurality of target positions, and ii) for each target position of the plurality of target positions, one or more of a respective power level, a respective energy level, a respective emission pattern, a respective time period, and a respective geometry of a target area of the three-dimensional region of interest; deploying, through a first distal opening of at least one distal opening of the guide stem, the probe to the three-dimensional region of interest at a first radial trajectory corresponding to a first target position of the plurality of target positions according to the treatment profile; and applying, by the processing circuitry, thermal therapy to the volume using the probe according to the treatment profile, wherein applying the thermal therapy comprises a) activating delivery of therapeutic energy by the probe to the three-dimensional region of interest at the first target position, b) after delivery of therapeutic energy, retracting the probe into the guide sheath; c) causing actuation of the probe, in the guide sheath, to adjust at least one of a linear position and a rotational position of the probe to select a next radial position, d) deploying the probe, through a next distal opening of the guide stem, to the three-dimensional region of interest at the next radial trajectory corresponding to a next target position of the plurality of target positions according to the treatment profile, e) activating delivery of therapeutic energy to the three-dimensional region of interest at the next target position according to the treatment profile, and repeating steps (b) through (e) until therapeutic energy is delivered to at least a first volume of the three-dimensional region of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for effecting in vivo thermal therapy comprising:
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a thermal imaging system; a removable guide stem for deployment within a skull of a patient; a probe configured for deployment through the removable guide stem; a probe driver configured to actuate the probe in at least a linear direction; a processor; and a memory having instructions stored thereon, wherein the instructions, when executed by the processor, cause the processor to; identify a treatment profile for effecting thermal therapy to a three-dimensional region of interest, direct a probe driver to deploy, through a first distal opening of at least one distal opening of the guide stem while the guide stem is positioned within in a volume in the patient, the probe to the three-dimensional region of interest at a first radial trajectory corresponding to a first target position of the plurality of target positions according to the treatment profile, and apply thermal therapy to the volume using the probe according to the treatment profile, wherein applying thermal therapy comprises a) activating delivery of therapeutic energy by the probe to the three-dimensional region of interest at the first target position, b) monitoring a respective temperature of each point of at least one point at the first target position, wherein each point of the at least one point at the first target position is one of within the three-dimensional region of interest and adjacent to the three-dimensional region of interest, and monitoring comprises receiving a plurality of imaging data sets from the thermal imaging system, and determining one or more temperature values from the imaging data, wherein each imaging data set of the plurality of imaging data sets represents data captured at a different time over a period of time by the thermal imaging system, c) determining, based at least in part upon at least one of the respective temperature and a respective thermal dose of each of the at least one point at the first target position, completion of thermal therapy at the first target position, the respective thermal dose being based on a temperature history of each of the at least one point at the first target position over a specified time period, d) directing the probe driver to retract the probe into the guide stem, e) directing the probe driver to adjust at least one of a linear position and a rotational position of the probe, in the guide sheath, to select a next radial trajectory, f) directing the probe driver to deploy the probe, through a next distal opening of the guide stem, to the three-dimensional region of interest at the next radial trajectory corresponding to a next target position of the plurality of target positions according to the treatment profile, g) activating delivery of therapeutic energy by the probe to the three-dimensional region of interest at the next target position, h) monitoring at least one of the respective temperature and the respective thermal dose of each point of the at least one point at the next target position, wherein each point of the at least one point at the next target position is one of within the three-dimensional region of interest and adjacent to the three-dimensional region of interest, i) determining, based at least in part upon at least one of i) the respective temperature of each point of the at least one point at the next target position, and ii) the respective thermal dose of each point of the at least one point at the next target position, completion of treatment at the next target position, and j) repeating steps (d) through (i) until therapeutic energy is delivered to at least a first volume of the three-dimensional region of interest. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A non-transitory computer readable medium having instructions stored thereon, wherein the instructions, when executed by a processor, cause the processor to effect thermal therapy to a three-dimensional region of interest within a patient using a pre-shaped probe, effecting thermal therapy comprising:
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a) identifying a first emission level for treatment of the three-dimensional region of interest at a first radial trajectory of the pre-shaped probe, b) deploying the pre-shaped probe from a guide sheath, at the first radial trajectory to treat a first position of the three-dimensional region of interest, c) activating delivery of therapeutic energy by the pre-shaped probe at the first emission level to the three-dimensional region of interest at the first position; d) receiving, from at least one of a magnetic resonance (MR) imaging system and a thermometry imaging system, feedback data related to a first target area, wherein the feedback data comprises at least one of temperature data and imaging data; e) determining, based at least in part on the feedback data, completion of thermal therapy at the first position; f) retracting the pre-shaped probe into the guide sheath; g) actuating the pre-shaped probe, within the guide sheath, in at least one of a linear direction and a rotational direction to select a next radial trajectory; h) deploying the pre-shaped probe outside the guide sheath at the next radial trajectory to treat a next position; i) identifying a next emission level for treatment of the three-dimensional region of interest at the next position of the pre-shaped probe; j) activating delivery of therapeutic energy by the pre-shaped probe at the next emission level to the three-dimensional region of interest at the next position; k) monitoring feedback data related to the next target area; l) determining, based at least in part on the feedback data, completion of thermal therapy at the next position; and m) repeating steps (f) through (l) until therapeutic energy is delivered to at least a first volume of the three-dimensional region of interest. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification