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1. WO2020139872 - SYSTEM AND METHOD FOR IMAGING A SUBJECT

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[ EN ]

CLAIMS

What is claimed is:

1. A system including a filter assembly, comprising:

a main member having a first surface and a second surface, wherein at least a first slot and a second slot are formed through the main member and the first surface and the second surface;

a first covering member having a first surface and an opposed second surface, wherein the first surface is substantially co-extensive with the main member first surface and fixed relative to the main member;

wherein the main member is formed of a x-ray blocking material;

wherein the first slot is defined between a first internal surface and a second internal surface formed in the main member;

wherein a first distance between the first internal surface and the second internal surface is about .01 mm to about 6 mm;

wherein the second slot is defined between a third internal surface and a fourth internal surface formed in the main member;

wherein a second distance between the third internal surface and the fourth internal surface is about .01 mm to about 6 mm.

2. The system of Claim 1, wherein the main member further comprises a third slot;

wherein the third slot is defined between a fifth internal surface and a sixth internal surface formed in the main member;

wherein a third distance between the fifth internal surface and the sixth internal surface is about .01 mm to about 6 mm.

3. The system of Claim 2, wherein the first distance, the second distance, and the third distance are all about 4 mm.

4. The system of any one of Claims 1 to 3, wherein the main member is formed of a tungsten carbide alloy having at least about 80% tungsten.

5. The system of any one of Claims 1 to 4, wherein the first covering member is formed of an aluminum alloy.

6. The system of any one of Claims 1 to 3, further comprising:

a second covering member having a first surface and an opposed second surface, wherein the first surface is substantially co-extensive with the main member second surface and fixed relative to the main member;

the second covering member comprising a first portion and a second portion, wherein the first portion and the second portion are substantially co-extensive and the first portion is formed of an aluminum alloy and the second portion is formed of a substantially pure copper;

wherein the second portion is fixed relative to the main member such that the second portion is exposed away from the main member.

7. The system of any one of Claims 1 to 6, wherein the first surface of the main member is opposed to the second surface of the main member and about 0.2 mm to about 3 mm.

8. The system of any one of Claims 1 to 7, wherein the first internal surface extends substantially parallel to the second internal surface;

wherein a line between the first internal surface and the second internal surface extends at an angle of about 5 degrees to about 10 degrees relative to the first surface.

9. The system of Claim 2, wherein the first slot and the third slot are formed through the main member on opposed sides of the second slot;

wherein the fifth internal surface extends substantially parallel to the sixth internal surface;

wherein a first line between the first internal surface and the second internal surface extends at an angle of about 5 degrees to about 10 degrees relative to the first surface.

10. The system of Claim 9, wherein the first internal surface extends substantially parallel to the second internal surface;

wherein a second line between the first internal surface and the second internal surface extends at an angle of about 5 degrees to about 10 degrees relative to the first surface.

1 1. The system of Claim 10, wherein the third internal surface extends substantially parallel to the fourth internal surface;

wherein a third line between the third internal surface and the fourth internal surface extends substantially perpendicular relative to the first surface.

12. The system of Claim 1 1, wherein the first line is spaced about 7 mm to about 9 mm from the second line;

wherein the second line is spaced about 7 mm to about 9 mm from the third line.

13. The system of Claim 12, further comprising:

a x-ray source;

wherein the main member is spaced about 50 mm to about 100 mm from the source; wherein the main member forms three fans from the x-ray source relative to a detector.

14. The system of any one of Claims 1 to 13, wherein the first distance and the second distance substantially eliminate parallax in an image generated with image data acquired with an x-ray source and x-ray detector spaced from the main member.

15. A method of forming a system with a filter assembly, comprising:

forming a first slot through a main member having a first surface and a second surface, wherein the first slot is formed through the main member and the first surface and the second surface, wherein the first slot is defined between a first internal surface and a second internal surface formed in the main member and wherein a first distance between the first internal surface and the second internal surface is about .01 mm to about 6 mm;

forming a second slot through the main member having the first surface and the second surface, wherein the second slot is formed through the main member and the first surface and the second surface, wherein the second slot is defined between a third internal surface and a fourth internal surface formed in the main member and wherein a second distance between the third internal surface and the fourth internal surface is about .01 mm to about 6 mm;

fixing a first covering member to the main member, wherein the first member has a first surface and an opposed second surface, wherein the first surface is substantially co extensive with the main member first surface and fixed relative to the main member;

fixing a second covering member to the main member, wherein the second covering member has a third surface and an opposed fourth surface, wherein the third surface is substantially co-extensive with the main member second surface and fixed relative to the main member;

wherein the main member is formed of a x-ray blocking material.

16. The method of Claim 15, further comprising:

forming a third slot through the main member having the first surface and the second surface, wherein the third slot is formed through the main member and the first surface and the second surface, wherein the third slot is defined between a fifth internal surface and a sixth internal surface formed in the main member and wherein a third distance between the fifth internal surface and the sixth internal surface is about .01 mm to about 6 mm.

17. The method of Claim 16, further comprising:

forming the first slot to be about 7 mm to about 9 mm from the second slot; and forming the third slot to be about 7 mm to about 9 mm from the second slot;

wherein the second slot is between the first slot and the third slot.

18. The method of any one of Claims 15 to 17, further comprising:

positioning the main member about 50 mm to about 100 mm from a x-ray source.

19. The method of Claim 16, further comprising:

reducing parallax in an image detected at a x-ray detector by allowing x-rays to the detector only through the first slot and the second slot and the third slot.

20. The method of Claim 16, wherein forming the first slot through the main member further comprises forming the slot at a first angle relative to the first surface;

wherein forming the third slot through the main member further comprises forming the slot at a second angle relative to the first surface.

21. The method of Claim 20, wherein the first angle and the second angle are about 5 degrees to about 10 degrees relative to a line substantially perpendicular to the first surface.

22. The method of Claim 19, further comprising:

dividing a single emitted beam of x-rays into at least a first beam, a second beam, and a third beam with the formed first slot, formed second slot, and formed third slot;

moving the x-ray detector and the single emitted beam of x-rays along a path relative to the subject from the first position to a second position;

collecting a first plurality of image data portions based on the first beam as the image detector is moved to a plurality of positions;

collecting a second plurality of image data portions based on the second beam as the image detector is moved to the plurality of positions;

collecting a third plurality of image data portions based on the third beam as the image detector is moved to the plurality of positions;

generating a first intermediate image based on the collected first plurality of image data portions;

generating a second intermediate image based on the collected second plurality of image data portions; and

generating a third intermediate image based on the collected third plurality of image data portions.

23. A system including a filter assembly, comprising:

a main member having a first surface and a second surface, wherein at least a first slot, a second slot, and a third slot are formed through the main member and the first surface and the second surface;

a first covering member having a first surface and an opposed second surface, wherein the first surface is substantially co-extensive with the main member first surface and fixed relative to the main member;

a second covering member having a first surface and an opposed second surface, wherein the first surface is substantially co-extensive with the main member second surface and fixed relative to the main member;

wherein the main member is formed of a x-ray blocking material;

wherein the first slot is defined between a first internal surface and a second internal surface formed in the main member;

wherein a first distance between the first internal surface and the second internal surface is about .01 mm to about 6 mm;

wherein the second slot is defined between a third internal surface and a fourth internal surface formed in the main member;

wherein a second distance between the third internal surface and the fourth internal surface is about .01 mm to about 6 mm;

wherein the third slot is defined between a fifth internal surface and a sixth internal surface formed in the main member;

wherein a third distance between the fifth internal surface and the sixth internal surface is about .01 mm to about 6 mm.