X-ray CT system, information processing method, and storage medium
First Claim
Patent Images
1. An X-ray CT system for performing a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and for reconstructing tomographic images of the subject, comprising:
- a sampling device for sampling information on a first set of exposures said subject has received during a scan performed for constructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which said subject is identified;
a creating device for creating an exposure distribution of the exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposures, wherein the axis includes a first position and a second position, wherein the exposures include a first exposure of the subject to x-rays and a second exposure of the subject to x-rays, and wherein the first exposure is calculated at the first position and the second exposure is calculated at the second position; and
a display device on which said exposure distribution is displayed.
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Abstract
A method to plan a scan in consideration of past patient exposures. The method includes a step of sampling information on a patient exposure the subject has received during a scan performed for reconstructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which the subject is identified; a step of creating a distribution of patient exposures calculated relative to an axis orthogonal to the scanning directions on the basis of the sampled information on the patient exposure (an estimated patient exposure, which is estimated in planning a scan, and an exposure limit); and a step of displaying the created exposure distribution.
15 Citations
20 Claims
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1. An X-ray CT system for performing a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and for reconstructing tomographic images of the subject, comprising:
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a sampling device for sampling information on a first set of exposures said subject has received during a scan performed for constructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which said subject is identified; a creating device for creating an exposure distribution of the exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposures, wherein the axis includes a first position and a second position, wherein the exposures include a first exposure of the subject to x-rays and a second exposure of the subject to x-rays, and wherein the first exposure is calculated at the first position and the second exposure is calculated at the second position; and a display device on which said exposure distribution is displayed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An X-ray CT system for performing a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and for reconstructing tomographic images of the subject, comprising:
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a sampling device for sampling information on an exposure said subject has received during a scan performed for constructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which said subject is identified; a creating device for creating an exposure distribution of exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposure; and a display device on which said exposure distribution is displayed, wherein on said display device, an exposure said subject receives when scanned is indicated while being added to a value indicated by said exposure distribution.
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10. An X-ray CT system for performing a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and for reconstructing tomographic images of the subject, comprising:
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a sampling device for sampling information on an exposure said subject has received during a scan performed for constructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which said subject is identified; a creating device for creating an exposure distribution of exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposure; and a display device on which said exposure distribution is displayed, wherein on said display device, an exposure said subject receives when scanned is indicated during scan planning while being added to a value indicated by said exposure distribution.
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11. An information processing method to be implemented in an X-ray CT system that performs a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and reconstructs tomographic images of said subject, said information processing method comprising:
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a sampling step of sampling information on a first set of exposures said subject has received during a scan performed for reconstructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which said subject is identified; a creating step of creating an exposure distribution of the exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposures, wherein the axis includes a first position and a second position, wherein the exposures include a first exposure of the subject to x-rays and a second exposure of the subject to x-rays, and wherein the first exposure is calculated at the first position and the second exposure is calculated at the second position; and a display step of displaying the exposure distribution. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An information processing method to be implemented in an X-ray CT system that performs a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and reconstructs tomographic images of said subject, said information processing method comprising:
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a sampling step of sampling information on an exposure said subject has received during a scan performed for reconstructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which said subject is identified; a creating step of creating an exposure distribution of exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposure; and a display step of displaying the exposure distribution, wherein at said display step, an exposure said subject receives when scanned is indicated while being added to a value indicated by said exposure distribution.
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19. An information processing method to be implemented in an X-ray CT system that performs a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and reconstructs tomographic images of said subject, said information processing method comprising:
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a sampling step of sampling information on an exposure said subject has received during a scan performed for reconstructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which said subject is identified; a creating step of creating an exposure distribution of exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposure; and a display step of displaying the exposure distribution, wherein at said display step, an exposure said subject receives when scanned is indicated during scan planning while being added to a value indicated by said exposure distribution.
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20. A computer program embodied on a computer readable medium for controlling an X-ray CT system that performs a scan so as to irradiate X-rays, which are generated from an X-ray tube, to a subject from a plurality of directions, and reconstructs tomographic images of said subject, said program configured to:
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sample information on a first set of exposures the subject has received during a scan performed for reconstructing tomographic images, which is appended to each of the reconstructed tomographic images, on the basis of identification information with which the subject is identified; create an exposure distribution of the exposures, which are calculated relative to an axis orthogonal to the scanning directions, on the basis of the sampled information on the exposures, wherein the axis includes a first position and a second position, wherein the exposures include a first exposure of the subject to x-rays and a second exposure of the subject to x-rays, and wherein the first exposure is calculated at the first position and the second exposure is calculated at the second position; and display the exposure distribution.
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Specification
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Current AssigneeGE Medical Systems Global Technology Company LLC (GE Healthcare Technologies, Inc.)
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Original AssigneeGE Medical Systems Global Technology Company LLC (GE Healthcare Technologies, Inc.)
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InventorsNishide, Akihiko
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Primary Examiner(s)Glick, Edward J.
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Assistant Examiner(s)Yun, Jurie
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Application NumberUS10/918,936Publication NumberTime in Patent Office841 DaysField of Search378/98.5, 378/165, 378 4- 19, 378108-117, 378/901US Class Current378/98.5CPC Class CodesA61B 6/032 Transmission computed tomog...A61B 6/488 involving pre-scan acquisitionA61B 6/542 involving control of exposureG01N 2223/419 computed tomographG01N 2223/612 biological materialG01N 23/046 using tomography, e.g. comp...Y10S 378/901 Computer tomography program...
