SYSTEM AND METHOD FOR MULTISTATION IMAGE PASTING FOR WHOLE BODY DIFFUSION-WEIGHTED IMAGING
First Claim
1. An MRI apparatus comprising:
- a magnetic resonance imaging (MRI) system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images; and
a computer programmed to;
execute a diffusion-weighted imaging pulse sequence to acquire MR data from a subject over two or more stations;
acquire imaging data of the subject over the two or more stations;
reconstruct images that correspond to each of the two or more stations;
calculate an average intensity signal per slice within each of the reconstructed images;
adjust intensity within at least one of the reconstructed images based on the calculated average intensity signal within each of the reconstructed images; and
form a pasted image using the at least one of the reconstructed images having its intensity adjusted and another reconstructed image, having a boundary formed therebetween.
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Accused Products
Abstract
An MRI system includes a plurality of gradient coils positioned about a bore of a magnet, an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images, and a computer programmed to execute a diffusion-weighted imaging pulse sequence to acquire MR data from a subject over two or more stations, acquire imaging data of the subject over the two or more stations, reconstruct images that correspond to each of the two or more stations, and calculate an average intensity signal per slice within each of the reconstructed images. The computer is further programmed to adjust intensity within at least one of the reconstructed images based on the calculated average intensity signal within each of the reconstructed images and form a pasted image using a reconstructed image having its intensity adjusted and another reconstructed image.
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Citations
24 Claims
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1. An MRI apparatus comprising:
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a magnetic resonance imaging (MRI) system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images; and a computer programmed to; execute a diffusion-weighted imaging pulse sequence to acquire MR data from a subject over two or more stations; acquire imaging data of the subject over the two or more stations; reconstruct images that correspond to each of the two or more stations; calculate an average intensity signal per slice within each of the reconstructed images; adjust intensity within at least one of the reconstructed images based on the calculated average intensity signal within each of the reconstructed images; and form a pasted image using the at least one of the reconstructed images having its intensity adjusted and another reconstructed image, having a boundary formed therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of MR imaging comprising:
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obtaining diffusion-weighted MR imaging data of a subject from at least two stations; reconstructing images of the subject using the MR imaging data that correspond to the at least two stations, the images having a border formed therebetween; calculating an average intensity signal per slice within the reconstructed images to determine a net intensity offset between the reconstructed images; offsetting intensity of pixels within at least one of the reconstructed images based on the determined net intensity offset; and forming a pasted image using the reconstructed images, wherein at least one of the reconstructed images includes the at least one reconstructed image having had its pixel intensity offset. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to:
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execute a diffusion-weighted imaging pulse sequence to acquire MR data from a subject over two or more stations; acquire imaging data of the subject over the two or more stations; reconstruct images of each of the two or more stations using the acquired imaging data; calculate an average intensity signal per slice within each of the two or more stations using the reconstructed images; determine an amount of pixel intensity offset based on the calculated average intensity per slice; adjust intensity within at least one of the reconstructed images based on the pixel intensity offset; and form a pasted image using the at least one of the reconstructed images having its intensity adjusted and another reconstructed image, having a boundary formed therebetween. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification