# US 2021/0278554 A1 · Edge-on x-ray detector

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- Number: US 2021/0278554 A1
- Document ID: US20210278554A1
- Status: Published application
- Kind: A1
- Application number: 17/237,460
- Filed: 2021-04-22
- Published: 2021-09-09
- Earliest claimed: 2020-03-04
- Assignees: Prismatic Sensors AB
- Applicants: Prismatic Sensors AB
- Inventors: Torbjörn HJÄRN; Hans BORNEFALK; Martin SJÖLIN
- Web page: https://patentgrep.com/patent/US20210278554A1

## CPC

- G01T 1/244: {Auxiliary details, e.g. casings, cooling, damping or insulation against damage by, e.g. heat, pressure or the like}
- G01T 1/243: {Modular detectors, e.g. arrays formed from self contained units (constructional or manufacturing details H10W90/00)}
- G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00)

## Abstract

There is provided an edge-on x-ray detector configured for detecting incoming x-rays. The edge-on x-ray detector includes a plurality of adjacent x-ray sensors, and each x-ray sensor is oriented edge-on to incoming x-rays. The x-ray sensors are arranged side-by-side and/or lined up one after the other, and the interspacing between the x-ray sensors is at least partly filled with a gap filling material including a mixture or compound of resin and metal disulfide.

## Claims

### Claim 1

An edge-on x-ray detector configured for detecting incoming x-rays, said edge-on x-ray detector comprising:
a plurality of adjacent x-ray sensors, each of the x-ray sensors being oriented edge-on to incoming x-rays, the x-ray sensors being arranged side-by-side and/or lined up one after the other, the interspacing between the x-ray sensors being at least partly filled with a gap filling material comprising a mixture or compound of resin and metal disulfide

### Claim 2 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the metal disulfide is tungsten disulfide.

### Claim 3 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the resin is mixed with tungsten disulfide powder.

### Claim 4 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the resin is an organic or synthetic resin.

### Claim 5 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the resin has adhesive properties.

### Claim 6 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the resin includes an adhesive based on epoxy, acrylate, silicon, polyvinyl acetate and/or urethane or polyurethane.

### Claim 7 (depends on 1)

The edge-on x-ray detector of claim 1, further comprising scatter rejection foils or plates arranged between at least part of the x-ray sensors.

### Claim 8 (depends on 7)

The edge-on x-ray detector of claim 7, wherein the scatter rejection foils or plates are made of tungsten.

### Claim 9 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the x-ray sensors are edge-on x-ray sensors, each having a plurality of detector elements.

### Claim 10 (depends on 9)

The edge-on x-ray detector of claim 9, wherein each edge-on x-ray sensor is based on a silicon wafer having a plurality of detector electrodes.

### Claim 11 (depends on 9)

The edge-on x-ray detector of claim 9, wherein each edge-on x-ray sensor comprises detector elements extending in the depth direction of the edge-on x-ray sensor, assuming x-rays enter through the edge.

### Claim 12 (depends on 9)

The edge-on x-ray detector of claim 9, wherein each edge-on x-ray sensor is a depth-segmented x-ray sensor having two or more depth segments of detector elements in the direction of the incoming x-rays.

### Claim 13 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the x-ray sensors are arranged side-by-side and/or lined up one after the other in a direction substantially perpendicular to the direction of the incoming x-rays and/or arranged in a slightly curved overall configuration with respect to the x-ray focal point of an associated x-ray source.

### Claim 14 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the x-ray sensors are planar modules, and, for at least part of the x-ray sensors, the x-ray sensors are arranged side-by-side in the in-plane direction of the x-ray sensors and/or in a direction transversely to the in-plane direction.

### Claim 15 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the edge-on x-ray detector is a photon-counting x-ray detector.

### Claim 16 (depends on 1)

The edge-on x-ray detector of claim 1, wherein the gap filling material comprising a mixture of resin and metal disulfide is applied in strings or in a dot pattern on at least a subset of the adjacent x-ray sensors.

### Claim 17 (depends on 1)

An x-ray imaging system comprising:
the edge-on x-ray detector of claim 1.