# US 2014/0197319 A1 · X-ray line detector and method for the production thereof

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- Number: US 2014/0197319 A1
- Document ID: US20140197319A1
- Status: Published application
- Kind: A1
- Application number: 14/165,608
- Filed: 2014-01-28
- Published: 2014-07-17
- Earliest claimed: 2010-12-13
- Assignees: Yxlon International GmbH
- Applicants: YXLON International GmbH
- Inventors: Klaus Bavendiek
- Web page: https://patentgrep.com/patent/US20140197319A1

## CPC

- G01T 1/20188: {Auxiliary details, e.g. casings or cooling}
- A61B 6/035: {Mechanical aspects of CT}
- A61B 6/4411: {the apparatus being modular (A61B6/4283 takes precedence)}
- G01T 1/20189: {Damping or insulation against damage, e.g. caused by heat or pressure}
- G01T 1/2985: {In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis); (using external radiation sources A61B6/02)}
- H10F 39/802: {Geometry or disposition of elements in pixels, e.g. address-lines or gate electrodes}
- Y10T 29/49002: Electrical device making
- 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)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An X-ray line detector includes a housing and a predefined number of carrier modules having the same width disposed in the housing. A one-piece printed circuit board, on which a photodiode is arranged, is attached to each carrier module. Each printed circuit board is wider than an active area of pixels constituting the photodiode and ascintillator element is attached to each photodiode. Each scintillator element has a length that exactly covers the active area in the width thereof plus an interspace between two adjacent pixels of a photodiode. The width of each carrier module is at most twice as great as the length of a scintillator element. The carrier modules are arranged in two rows in the housing such that the photodiodes of each row are opposite each other, the scintillator elements abut against each other upon contact, and mutually contacting scintillator elements are arranged in respectively opposite rows.

## Claims

### Claim 1

An X-ray line detector comprising:
a housing:
a predefined number of carrier modules disposed in the housing, the carrier modules having, apart from a production tolerance, a same width;
a one-piece printed circuit board, on which a photodiode is arranged, attached to each carrier module, respectively; the printed circuit board being wider than an active area of pixels constituting the photodiode;
a scintillator element attached to each photodiode, respectively, each scintillator element having a length that exactly covers the active area in the width thereof plus an interspace between two adjacent pixels of a photodiode, the width of each carrier module being at most twice as great as the length of a scintillator element,
wherein the carrier modules are arranged in two rows in the housing such that the photodiodes of each row are opposite each other such that the scintillator elements abut against each other upon contact, and mutually contacting scintillator elements are arranged in respectively opposite rows.

### Claim 2 (depends on 1)

The X-ray line detector according to claim 1, wherein the housing has a first carrier element and a second carrier element disposed and formed in mirror symmetry to the first carrier element, an inlet slot being formed between the first and second carrier elements for X-ray radiation, wherein the carrier modules are arranged alternately on the first and second carrier elements and the scintillator elements are arranged in the alignment of the inlet slot.

### Claim 3 (depends on 2)

The X-ray line detector according to claim 2, wherein the carrier elements are L-shaped, and a groove is disposed in each carrier element, respectively, the groove being aligned parallelwise in relation to the inlet slot, and wherein a lug formed on the carrier modules engages the inlet slot in a form-fit manner.

### Claim 4 (depends on 1)

The X-ray line detector according to claim 1, wherein each carrier module is connected to the respective carrier element using at least one fixing element.

### Claim 5 (depends on 2)

The X-ray line detector according to claim 2, wherein an end plate is arranged at each end of the housing, wherein a first of the end plates is formed as a stop and a second of the end plates is formed as a clamping element.

### Claim 6 (depends on 5)

The X-ray line detector according to claim 5, wherein the second end plate has three clamping screws, of which a first of the clamping screws acts in combination with the first row of carrier modules, a second of the clamping screws acts in combination with the second row of carrier modules, and a third of the clamping screws acts in combination with the scintillator elements.

### Claim 7 (depends on 2)

The X-ray line detector according to claim 2, wherein the housing includes a cover plate on a side opposite the inlet slot.

### Claim 8 (depends on 7)

The X-ray line detector according to claim 7, wherein the cover plate is composed of a material that, for the X-ray radiation energy used, produces scarcely any scattered radiation.

### Claim 9 (depends on 5)

The X-ray line detector according to claim 5, wherein a buffer piece is inserted between the end plate and one of the two rows of carrier modules, the buffer piece being half as wide as the carrier modules, and a first spacer is inserted between the first end plate and the scintillator elements, the spacer being half as wide as the scintillator elements.

### Claim 10 (depends on 9)

The X-ray line detector according to claim 9, wherein a second buffer pieces is inserted between the end plate and one of the two rows of carrier modules, the second buffer plate being half as wide as the carrier modules, and a second spacer inserted between the second end plate and the scintillator elements, the second spacer being half as wide as the scintillator elements.

### Claim 11 (depends on 2)

The X-ray line detector according to claim 2, wherein the printed circuit boards are bent so as to produce a bend region, and wherein the respective photodiode is disposed on a first side of the bend region and electronic components are arranged on a second side of the bend region.

### Claim 12 (depends on 1)

A method for the production of an X-ray line detector having the features of claim 1, the method comprising:
conducting a first step including one of:
inserting a first spacer on a first end plate and subsequently inserting a first carrier module on the first carrier element until the scintillator element thereof contacts the first spacer, and inserting a first buffer piece on the second carrier element until the first buffer piece contacts the first end plate, wherein the insertion of the first carrier module and the first buffer piece can also be effected in a reverse sequence, or
bringing the first buffer piece on the second carrier element into contact with the first end plate, and bringing the first spacer into contact with the first end plate, and subsequently bringing the first carrier module, with the scintillator element thereof, into contact with the first spacer;
after the first step, inserting a second carrier module such that the scintillator element thereof contacts the scintillator element of the first carrier module and the former itself contacts the first buffer piece;
inserting a carrier module, always alternately, on the first and on the second carrier element, wherein the respective scintillator element thereof contacts the scintillator element of the carrier module inserted directly before it;
in any sequence, bringing a second spacer, which is half as wide as a scintillator element, into contact with the scintillator element of the final carrier module, and bringing a second buffer piece, which is half as wide as a carrier module, into contact with the penultimate inserted carrier module;
actuating a clamping device in the second end plate, so as to press all scintillator elements with the respectively opposite end faces thereof against each other; and
fixing the two rows of carrier modules by means of a clamping device in the second end plate.

### Claim 13 (depends on 12)

The method according to claim 12, further comprising fixing the individual carrier to the housing using fixing means such that there is no longer pressure acting on the scintillator elements.

### Claim 14 (depends on 12)

The method according to claim 12, further comprising connecting a cover plate to the housing.