Evaluation logic of an X-ray detector with multi-level multiplexer

Patent metadata

Field	Value
Publication number	US-9945964-B2
Application number	US-201615214492-A
Country	US
Kind code	B2
Filing date	Jul 20, 2016
Priority date	Aug 7, 2015
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

An X-ray detector includes an arrangement of detector elements and an evaluation logic of the arrangement of detector elements. The evaluation logic includes a multi-level first multiplexer. A plurality of detector elements are assigned to a first group and each detector element of the first group is assigned to an input of a first level of the multi-level first multiplexer. The respective total number of the inputs of the levels of the multi-level first multiplexer is greater than the total number of outputs of the levels of the multi-level first multiplexer. A serial output is assigned to an output of a last level of the multi-level first multiplexer.

First claim

What is claimed is:

1. An X-ray detector, comprising
an arrangement of detector elements; and
an evaluation logic of the arrangement of detector elements, the evaluation logic including a multi-level first multiplexer, wherein
a plurality of the detector elements are assigned to a first group,
each of the plurality of detector elements of the first group is assigned to an input of a first level of the multi-level first multiplexer,
a total number of the inputs of levels of the multi-level first multiplexer is greater than a total number of outputs of levels of the multi-level first multiplexer, and
a serial output is assigned to an output of a relatively last level of the multi-level first multiplexer.

2. The X-ray detector of claim 1 , wherein the detector elements are configured to carry out energy-selective measurements.

3. The X-ray detector of claim 2 , wherein the detector elements are each a subpixel of a macropixel.

4. The X-ray detector of claim 2 , wherein the detector elements are each a macropixel which comprise a plurality of subpixels.

5. The X-ray detector of claim 4 , wherein a plurality of subpixels of the macropixel are assigned to a second group and wherein the X-ray detector also includes a shift register for readout of the second group of subpixels.

6. The X-ray detector of claim 5 , wherein the macropixel includes at least one multiplexer-adder level.

7. The X-ray detector of claim 6 , wherein the at least one multiplexer-adder level includes an input multiplexer, an adder level and an output multiplexer.

8. The X-ray detector of claim 7 , wherein the adder level comprising two tiers.

9. The X-ray detector of claim 4 , wherein the macropixel includes at least one multiplexer-adder level.

10. The X-ray detector of claim 9 , wherein the at least one multiplexer-adder level includes an input multiplexer, an adder level and an output multiplexer.

11. The X-ray detector of claim 10 , wherein the adder level comprising two tiers.

12. A medical apparatus comprising the X-ray detector of claim 2 .

13. The X-ray detector of claim 1 , wherein the detector elements are each a subpixel of a macropixel.

14. A medical apparatus comprising the X-ray detector of claim 13 .

15. The X-ray detector of claim 1 , wherein the detector elements are each a macropixel which comprise a plurality of subpixels.

16. The X-ray detector of claim 15 , wherein a plurality of subpixels of the macropixel are assigned to a second group and wherein the X-ray detector also includes a shift register for readout of the second group of subpixels.

17. The X-ray detector of claim 15 , wherein the macropixel includes at least one multiplexer-adder level.

18. The X-ray detector of claim 17 , wherein the at least one multiplexer-adder level includes an input multiplexer, an adder level and an output multiplexer.

19. The X-ray detector of claim 18 , wherein the adder level comprising two tiers.

20. The X-ray detector of claim 18 , wherein a plurality of subpixels of the macropixel are assigned to a second group and wherein each subpixel of the second group is assigned to an input of the input multiplexer or an input of the adder level.

21. The X-ray detector of claim 18 , wherein the output of the input multiplexer and the output of the adder level is assigned to the output multiplexer.

22. The X-ray detector of claim 18 , wherein the output of a multiplexer-adder level is assigned to an input of a further input multiplexer or an input of a further adder level.

23. The X-ray detector of claim 22 , wherein the adder level comprises a sum memory, assigned to the input of the further input multiplexer, the input of the further adder level or the output multiplexer.

24. The X-ray detector of claim 18 , wherein the at least one multiplexer-adder level comprises a configuration register and a control logic for controlling the input multiplexer, the adder level and an output multiplexer.

25. A medical apparatus comprising the X-ray detector of claim 15 .

26. A medical apparatus comprising the X-ray detector of claim 1 .

Assignees

• Siemens Healthcare Gmbh

Inventors

• Goderer Edgar
• Hosemann Michael
• Suttorp Thomas

Classifications

• G01T1/247 Primary

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