Method and System for Scatter Correction During Bi-Plane Imaging with Simultaneous Exposure
First Claim
1. A method for scatter correction during simultaneous bi-plane imaging comprising:
- generating a first x-ray flux in a first imaging plane;
generating a first image readout;
digitally sampling a first scatter signal from said first x-ray flux in a second imaging plane; and
generating a first compensation signal for said first scatter signal.
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Accused Products
Abstract
A method for x-ray scatter correction during simultaneous bi-plane imaging using digital image processing. The basic concept includes correcting the image from each plane by combining it with an image of the scatter generated from the exposures of the opposite plane in such a way that the scatter effects are removed. The correction image is formed by sampling images from the detector with only the x-ray exposure of the scatter producing plane being active. These sampled images of scatter are processed to form the scatter correction image. The scatter correction image is stored in an image memory so that it is available for combination with subsequent x-ray images to remove scatter distortion.
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Citations
50 Claims
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1. A method for scatter correction during simultaneous bi-plane imaging comprising:
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generating a first x-ray flux in a first imaging plane;
generating a first image readout;
digitally sampling a first scatter signal from said first x-ray flux in a second imaging plane; and
generating a first compensation signal for said first scatter signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for scatter correction during simultaneous bi-plane imaging comprising:
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generating a first x-ray flux in a first imaging plane;
generating a first image readout;
digitally sampling a first scatter signal from said first x-ray flux in a second imaging plane;
generating a first compensation signal for said first scatter signal;
generating a second x-ray flux in said second imaging plane;
generating a second image readout; and
compensating for scatter in said second image readout with said first compensation signal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A scanning system comprising:
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a gantry;
a first x-ray source coupled to said gantry, said first x-ray source adapted to generate a first x-ray flux and a first plane scatter signal;
a second x-ray source coupled to said gantry, said second x-ray source adapted to generate a second x-ray flux and a second plane scatter signal;
a first x-ray detector system coupled to said gantry, said first x-ray detector system adapted to generate a first detector signal in response to said first x-ray flux and further adapted to generate a first scatter signal in response to said second plane scatter signal;
a second x-ray detector system coupled to said gantry, said second x-ray detector system adapted to generate a second detector signal in response to said second x-ray flux and further adapted to generate a second scatter signal in response to said first plane scatter signal; and
a host computer adapted to receive said first detector signal, said second detector signal, said first plane scatter signal, and said second plane scatter signal, said host computer further adapted to digitally sample said first plane scatter signal, generate a first image readout in response thereto, generate a first compensation signal for said first scatter signal, and store said first compensation signal in a first scatter correction memory. - View Dependent Claims (17, 18, 19, 20)
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21. An x-ray image data file representative of internal portions of an object, the file comprising:
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first digital data representative of internal portions of the object when exposed to a first x-ray source;
second digital data representative of internal portions of the object when exposed to a second x-ray source substantially simultaneously with exposure to the first x-ray source, wherein the first x-ray source is displaced from the second x-ray source, the first digital data has been modified to compensate for scattered radiation from the second x-ray source and the second digital data has been modified to compensate for scattered radiation from the first x-ray source; and
third digital data representative of a characteristic of the object. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 38, 39)
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29. A method of generating revenue comprising:
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generating a first digital data representative of internal portions of an object when exposed to a first x-ray source;
generating a second digital data representative of internal portions of an object when exposed to a second x-ray source substantially simultaneously with exposure to said first x-ray source, wherein said first digital data has been modified to compensate for scattered radiation from said second x-ray source and said second digital data has been modified to compensate for scattered radiation from said first x-ray source;
generating a third digital data representative of a characteristic of said object; and
generating a request for a payment of money based upon at least said third digital data. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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40. A system for imaging internal portions of an object comprising:
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a first radiation source;
a second radiation source displaced from said first radiation source;
a first digital detector supported relative to said first radiation source to generate first digital data representative of the object when exposed to a first radiation source;
a second digital detector supported relative to said second radiation source to generate second digital data representative of the object when exposed to a second radiation source substantially simultaneously with exposure to said first radiation source, wherein said first digital detector selectively generates first scatter data representative of radiation scattered from said first radiation source when said second radiation source is not radiating x-rays and second scatter data representative of radiation scattered from said second radiation source when said first x-ray source is not radiating radiation; and
a digital data processor coupled to said detectors to modify said first digital data with said second scatter data to compensate for scattered radiation from said second radiation source and to modify said second digital data with said first scatter data to compensate for scattered radiation from said first radiation source. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification