COORDINATE TRANSFORMATION OF GRAPHICAL OBJECTS REGISTERED TO A MAGNETIC RESONANCE IMAGE
First Claim
1. A medical instrument comprising:
- a magnetic resonance imaging system for acquiring magnetic resonance data from an imaging zone and;
a high intensity focused ultrasound system with an adjustable focus,a processor for controlling the medical instrument; and
a memory containing machine readable instructions for execution by the processor;
wherein execution of the instructions causes the processor toacquire first magnetic resonance data with the magnetic resonance imaging system,reconstruct a first magnetic resonance image using the first magnetic resonance data, wherein from the first magnetic resonance image a treatment plan is formed for controlling the high intensity focused ultrasound system and the formation of the treatment plan includes identification of one or more graphical objects in the first magnetic resonance image,wherein execution of the instructions further causes the processor toreceive a registration of the one or more graphical objects to the first magnetic resonance image, wherein the registration defines spatial positions of the one or more graphical objects with respect to the first magnetic resonance image, andwherein execution of the instructions further causes the processor to repeatedly;
acquire second magnetic resonance data using the magnetic resonance imaging system;
reconstruct a second magnetic resonance image using the second magnetic resonance data;
receive repositioning coordinates in the second magnetic resonance image for a first group selected from the one or more graphical objects, wherein the repositioning coordinates describe a repositioning of the first group in the second magnetic resonance image with respect to the first magnetic resonance image; and
determine a coordinate transformation of a second group selected from the one or more graphical objects by applying a coordinate transformation model to the repositioning coordinates andwherein execution of the instructions further causes the processor to repeatedly modify the treatment plan using the repositioning coordinates and the coordinate transformation, andcontrol the high intensity focused ultrasound system in accordance with the modified treatment plan.
1 Assignment
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Accused Products
Abstract
A method of using a medical instrument (300, 400) comprising a magnetic resonance imaging (MRI) system (302). The MRI system acquires (100, 202) first magnetic resonance data (342) and reconstructs (102, 204) a first magnetic resonance image (344, 502). A registration (352) of multiple graphical objects (346, 510, 512) to the first magnetic resonance image is received which defines spatial positions of the multiple graphical objects in the first magnetic resonance image. The method further comprises repeatedly: acquiring (106, 210) second magnetic resonance data (354); reconstructing (108, 212) a second magnetic resonance image (356, 502′); receiving (110, 214) repositioning coordinates (358, 700) in the second magnetic resonance image for a first group (348, 510) selected from the multiple graphical objects; and determining (112, 216) a coordinate transformation (359, 702) of a second group (350, 512) selected from the multiple graphical objects by applying a coordinate transformation model (364) to the repositioning coordinates.
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Citations
10 Claims
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1. A medical instrument comprising:
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a magnetic resonance imaging system for acquiring magnetic resonance data from an imaging zone and; a high intensity focused ultrasound system with an adjustable focus, a processor for controlling the medical instrument; and a memory containing machine readable instructions for execution by the processor;
wherein execution of the instructions causes the processor toacquire first magnetic resonance data with the magnetic resonance imaging system, reconstruct a first magnetic resonance image using the first magnetic resonance data, wherein from the first magnetic resonance image a treatment plan is formed for controlling the high intensity focused ultrasound system and the formation of the treatment plan includes identification of one or more graphical objects in the first magnetic resonance image, wherein execution of the instructions further causes the processor to receive a registration of the one or more graphical objects to the first magnetic resonance image, wherein the registration defines spatial positions of the one or more graphical objects with respect to the first magnetic resonance image, and wherein execution of the instructions further causes the processor to repeatedly; acquire second magnetic resonance data using the magnetic resonance imaging system; reconstruct a second magnetic resonance image using the second magnetic resonance data; receive repositioning coordinates in the second magnetic resonance image for a first group selected from the one or more graphical objects, wherein the repositioning coordinates describe a repositioning of the first group in the second magnetic resonance image with respect to the first magnetic resonance image; and determine a coordinate transformation of a second group selected from the one or more graphical objects by applying a coordinate transformation model to the repositioning coordinates and wherein execution of the instructions further causes the processor to repeatedly modify the treatment plan using the repositioning coordinates and the coordinate transformation, and control the high intensity focused ultrasound system in accordance with the modified treatment plan. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer program product comprising machine executable instructions for execution by a processor controlling a medical instrument, wherein the medical instrument comprises a magnetic resonance imaging system for acquiring magnetic resonance data from an imaging zone, and a high intensity focused ultrasound system with an adjustable focus,
wherein execution of the instructions further causes the processor to acquire first magnetic resonance data with the magnetic resonance imaging system, and from the first magnetic resonance image form a treatment plan for controlling the high intensity focused ultrasound system and the formation of the treatment plan includes identification of one or more graphical objects in the first magnetic resonance image, wherein execution of the instructions further causes the processor to reconstruct a first magnetic resonance image using the first magnetic resonance data, wherein execution of the instructions further causes the processor to receive a registration of one or more graphical objects to the first magnetic resonance image, wherein the registration defines spatial positions of the one or more graphical objects with respect to the first magnetic resonance image, wherein execution of the instructions further causes the processor to repeatedly: -
acquire second magnetic resonance data using the magnetic resonance imaging system; reconstruct a second magnetic resonance image using the second magnetic resonance data; receive repositioning coordinates in the second magnetic resonance image for a first group selected from the one or more, graphical objects, wherein the repositioning coordinates describe a repositioning of the first group in the second magnetic resonance image with respect to the first magnetic resonance image; and determine a coordinate transformation of a second group selected from the one or more graphical objects by applying a coordinate transformation model to the repositioning coordinates and wherein execution of the instructions further causes the processor to repeatedly modify the treatment plan using the repositioning coordinates and the coordinate transformation, and control the high intensity focused ultrasound s m in accordance with the modified treatment plan.
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10. A method of controlling the medical instrument, wherein the medical instrument comprises a magnetic resonance imaging system for acquiring magnetic resonance data from an imaging zone;
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a high intensity focused ultrasound system with an adjustable focus wherein the method comprises the steps of; acquiring first magnetic resonance data with the magnetic resonance imaging system; reconstructing a first magnetic resonance image using the first magnetic resonance data; receiving a registration of one or more graphical objects to the first magnetic resonance image;
wherein the registration defines spatial positions of the one or more graphical objects with respect to the first magnetic resonance image; and
from the first magnetic resonance image a treatment plan if formed for controlling the high intensity focused ultrasound system and the formation of the treatment plan includes identification of one or more graphical objects in the first magnetic resonance image,wherein execution of the instructions further causes the processor to acquiring second magnetic resonance data using the magnetic resonance imaging system; reconstructing a second magnetic resonance image using the second magnetic resonance data; receiving repositioning coordinates in the second magnetic resonance image for a first group selected from the one or more, graphical objects, wherein the repositioning coordinates describe a repositioning of the first group in the second magnetic resonance image with respect to the first magnetic resonance image; and determining a coordinate transformation of a second group selected from the one or more graphical objects by applying a coordinate transformation model to the repositioning coordinates and wherein execution of the instructions further causes the processor to repeatedly modify the treatment plan using the repositioning coordinates and the coordinate transformation and control the high intensity focused ultrasound system in accordance with the modified treatment plan.
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Specification