Articulated structure registration in magnetic resonance images of the brain
First Claim
Patent Images
1. A brain registration system, comprising:
- a main magnet configured to create a strong, static magnetic field through an imaging volume;
magnetic field gradient coils configured to generate magnetic field gradients in the imaging volume;
one or more RF coils configured to transmit radio frequency pulses into the imaging volume and receive magnetic resonance echo signals from the imaging volume;
a transmitter configured to control the one or more RF coils to transmit magnetic resonance excitation and manipulation pulses into the imaging volume;
one more receivers configured to demodulate the magnetic resonance echo signals from the one or more RF coils;
a back end system including a memory configured to store brain templates, a user input device, a display device, and one or more processors configured to;
reconstruct the demodulated magnetic resonance echo signals from the receiver into a brain image,segment the brain image to annotate brain image data,globally register the brain image with a template image retrieved from the storage memory,identify an articulated structure in the segmented brain image, the articulated structure including a pair of sub-structures connected by a linking joint,rotate the articulated sub-structures relative to each other about the linking joint to improve registration to maximize image similarity of the articulated structure in the brain image and the brain template, andcontrol the display device to display the brain image including the articulated structure.
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Abstract
A registration processor (74) is configured to obtain articulated brain substructures using acquired brain image data and template brain image data. The registration processor (74) annotates the brain image data; registers the brain image data with template image data using global brain registration; and registers at least one brain structure of the brain image data a corresponding brain structure of the template image data using a local brain substructure registration. The registration processor (74) articulates articulated substructures of the registered brain structures to improve registration using articulated substructure registration.
10 Citations
11 Claims
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1. A brain registration system, comprising:
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a main magnet configured to create a strong, static magnetic field through an imaging volume; magnetic field gradient coils configured to generate magnetic field gradients in the imaging volume; one or more RF coils configured to transmit radio frequency pulses into the imaging volume and receive magnetic resonance echo signals from the imaging volume; a transmitter configured to control the one or more RF coils to transmit magnetic resonance excitation and manipulation pulses into the imaging volume; one more receivers configured to demodulate the magnetic resonance echo signals from the one or more RF coils; a back end system including a memory configured to store brain templates, a user input device, a display device, and one or more processors configured to; reconstruct the demodulated magnetic resonance echo signals from the receiver into a brain image, segment the brain image to annotate brain image data, globally register the brain image with a template image retrieved from the storage memory, identify an articulated structure in the segmented brain image, the articulated structure including a pair of sub-structures connected by a linking joint, rotate the articulated sub-structures relative to each other about the linking joint to improve registration to maximize image similarity of the articulated structure in the brain image and the brain template, and control the display device to display the brain image including the articulated structure. - View Dependent Claims (2, 3, 4, 5)
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6. A brain registration method, comprising:
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with a main magnet, creating a strong, static magnetic field through an imaging volume; with magnetic field gradient coils, generating magnetic field gradients in the imaging volume; with one or more RF coils, transmitting radio frequency pulses into the imaging volume and receiving magnetic resonance echo signals from the imaging volume; with a transmitter, controlling the one or more RF coils to transmit magnetic resonance excitation and manipulation pulses into the imaging volume; with one more receivers, demodulating the magnetic resonance echo signals from the one or more RF coils; with one or more processors of a back end system including a memory configured to store brain templates, a user input device, a display device, and the one or more processors; reconstructing the demodulated magnetic resonance echo signals from the receiver into a brain image, segmenting the brain image to annotate brain image data, globally registering the brain image with a template image retrieved from the storage memory, identifying an articulated structure in the segmented brain image, the articular structure including a pair of sub-structures connected by a linking joint, rotating the articulated sub-structures relative to each other about the linking joint to improve registration to maximize image similarity of the articulated structure in the brain image and the brain template, and controlling the display device to display the brain image including the articulated structure. - View Dependent Claims (7, 8, 9)
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10. A brain registration system comprising:
a registration processor having a processor configured to; annotate brain image data, thereby obtaining a segmentation of brain structures in the brain image data; register the brain image data with template image data using global brain registration, thereby obtaining registered brain image data comprising registered brain structures; compensate for incorrect registration of at least one structure of the registered brain structure, which structure includes a pair of sub-structures, said compensation comprising; identifying a linking joint between a pair of sub-structures of the registered brain structures; rotating at least one of the pair of sub-structures in the registered brain image data about the linking joint to maximize a similarity to the template image data in accordance with a similarity metric which is computed between the registered brain image data comprising said rotated sub-structure and the template image data. - View Dependent Claims (11)
Specification