Focused ultrasound guiding system and method thereof
First Claim
1. An ultrasound system, which guides a focused ultrasound energy to a target point located in a tissue of a central nervous system, comprising:
- a focused ultrasound device generating a focus point and delivering said energy to said target point which is a tissue wrapped by a hard tissue, and said target point is located in an interested region of an individual;
a first tracking point, a second tracking point and a computer unit, wherein said first tracking point provides fixed reference coordinates and is arranged at a location whose relative position to said interested region of said individual is invariable, and wherein said second tracking point is arranged on an ultrasonic transducer of said focused ultrasound device, and said computer unit retrieves an image of said interested region of said individual, and said image of said interested region of said individual is a previously obtained image obtained with an MRI (Magnetic Resonance Imaging) technology or a CT (Computed Tomography) technology;
reference points on said interested region with spatial positions, and wherein said computer unit records said reference points on said interested region to determine coordinates of said reference points in said image of said interested region;
a calibration tracker connecting with said computer unit;
a dummy arranged on said ultrasonic transducer, wherein said dummy includes a tip pointing out a spatial position of said focus point, and said tip of said dummy, said second tracking point and said first tracking point are tracked by said calibration tracker and said computer unit to search said spatial position of said, focus point and said computer unit compares said spatial positions of said first tracking point, said second tracking point and said reference points with said coordinates of said first tracking point, said second tracking point and said reference points in said image of said interested region to establish the positional relationship between said first tracking point, said second tracking point and said reference points in said image of said interested region, whereby said spatial position of said focus point corresponds to coordinates of said focus point in said image of said interested region based on known positional relationship between said second tracking point and said focus point; and
a fixture fixing said interested region of said individual.
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Abstract
The present invention discloses a neuronavigation-guided focused ultrasound system and a method for the same, which are used to guide focused ultrasound energy to a target point. The system of the present invention comprises a focused ultrasound device, a neuronavigation system and a fixture. According to an image of an interested region of an individual, a focus point of the focused ultrasound device, and tracking points provided by the neuronavigation system, the neuronavigation system performs a calibration process and establishes a positional relationship between the focus point and the image of the interested region. Thereby, the neuronavigation system can recognize the focus point and guide focused ultrasound to the target point.
16 Citations
16 Claims
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1. An ultrasound system, which guides a focused ultrasound energy to a target point located in a tissue of a central nervous system, comprising:
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a focused ultrasound device generating a focus point and delivering said energy to said target point which is a tissue wrapped by a hard tissue, and said target point is located in an interested region of an individual; a first tracking point, a second tracking point and a computer unit, wherein said first tracking point provides fixed reference coordinates and is arranged at a location whose relative position to said interested region of said individual is invariable, and wherein said second tracking point is arranged on an ultrasonic transducer of said focused ultrasound device, and said computer unit retrieves an image of said interested region of said individual, and said image of said interested region of said individual is a previously obtained image obtained with an MRI (Magnetic Resonance Imaging) technology or a CT (Computed Tomography) technology; reference points on said interested region with spatial positions, and wherein said computer unit records said reference points on said interested region to determine coordinates of said reference points in said image of said interested region; a calibration tracker connecting with said computer unit; a dummy arranged on said ultrasonic transducer, wherein said dummy includes a tip pointing out a spatial position of said focus point, and said tip of said dummy, said second tracking point and said first tracking point are tracked by said calibration tracker and said computer unit to search said spatial position of said, focus point and said computer unit compares said spatial positions of said first tracking point, said second tracking point and said reference points with said coordinates of said first tracking point, said second tracking point and said reference points in said image of said interested region to establish the positional relationship between said first tracking point, said second tracking point and said reference points in said image of said interested region, whereby said spatial position of said focus point corresponds to coordinates of said focus point in said image of said interested region based on known positional relationship between said second tracking point and said focus point; and a fixture fixing said interested region of said individual. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A focused ultrasound energy delivery method for delivering an energy, which guides a focused ultrasound energy to a target point located in a tissue of a central nervous system, comprising steps of:
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providing a ultrasound system comprising a focused ultrasound device, a fixture, a dummy and a calibration tracker, wherein said ultrasound system further includes a first tracking point, a second tracking point and a computer unit, and wherein said first tracking point provides fixed reference coordinates and is arranged at a location whose relative position to an interested region of an individual is invariable, and wherein said second tracking point is arranged on an ultrasonic transducer of said focused ultrasound device, and wherein said dummy is arranged on said ultrasonic transducer, wherein said dummy includes a tip pointing out a spatial position of said focus point, and wherein said calibration tracker connects with said computer unit, wherein said focused ultrasound device generates said energy, and wherein said ultrasound system guides said energy to said target point which is a tissue wrapped by a hard tissue, and said target point is located in said interested region, and wherein said fixture fixes said interested region; using said computer unit to retrieve an image of said interested region of said individual, wherein said image is obtained with an MRI (Magnetic Resonance Imaging) technology or a CT (Computed Tomography) technology; providing reference points on said interested region, wherein said reference points are located at spatial positions using said computer unit to record said reference points on said interested region to determine coordinates of said reference points in said image of said interested region, and using said calibration tracker and said computer unit to track said tip of said dummy, said second tracking point and said first tracking point to search said spatial position of said focus point; using said computer unit to compare said spatial positions of said first tracking point, said second tracking and said reference points with said coordinates of said first tracking point, said second tracking and said reference points in said image of said interested region to establish the positional relationship between said first tracking point, said second tracking point and said reference points in said image of said interested region, whereby said spatial position of said focus point corresponds to coordinates of said focus point in said image of said interested region based on known positional relationship between said second tracking point and said focus point; guiding said focus point to said target point with said ultrasound system; and delivering said energy to said target point with said focused ultrasound device. - View Dependent Claims (13, 14, 15, 16)
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Specification