# US 10,307,128 B2 · X-ray imaging device

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- Number: US 10,307,128 B2
- Document ID: US10307128B2
- Status: Granted
- Kind: B2
- Application number: 15/152,829
- Filed: 2016-05-12
- Published: 2017-11-16
- Granted: 2019-06-04
- Earliest claimed: 2016-05-12
- Assignees: Shimadzu Corporation
- Applicants: Shimadzu Corporation
- Inventors: Kazuyoshi Nishino
- Web page: https://patentgrep.com/patent/US10307128B2

## CPC

- A61B 6/5241: {combining overlapping images of the same imaging modality, e.g. by stitching}
- A61B 6/0487: {Motor-assisted positioning}
- A61B 6/4452: {the source unit and the detector unit being able to move relative to each other}
- A61B 6/5258: {involving detection or reduction of artifacts or noise}
- A61B 6/542: {involving control of exposure}
- A61B 6/582: {Calibration}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An X-ray imaging device and method acquiring a long-length image that is connected. A configuration data of the signal intensity depending on the position along a moving direction of the long-length imaging is acquired by acquiring a model data prior to the long-length imaging, to obtain an approximate configuration A long-length imaging is conducted and a brightness difference takes place along the data line in overlapping pixel regions relative to two X-ray images adjacent each other. An offset correction value C in pixels in the region other than the pixel regions from the difference Δ of pixel values in such overlapping pixel regions, the slot width D and the overlapping width d. An offset correction is conducted based on such offset correction value, C and the X-ray images following the offset correction are connected to generate the long-length imaging to obtain a long-length image that is naturally connected.

## Claims

### Claim 1

An X-ray imaging device, that conducts an X-ray imaging of a subject, comprises:
an X-ray irradiation means that irradiates X-ray to a subject;
a detection circuit that detects the X-ray transmitted through the subject;
an X-ray detection means that acquires and connects a plurality of X-ray images while moving parallel to a defined data line of said X-ray detection means when said plurality of X-ray images acquired by said X-ray detection means are connected to generate a long-length image;
a configuration data storage circuit that stores a configuration data of the signal intensity, which is a model data predetermined prior to the long-length imaging, depending on the position along a move direction of the long-length imaging;
an offset correction value calculation circuit that calculates an offset correction value, depending on a position along the direction of the long-length imaging based on the configuration data of the signal intensity stored by the configuration data storage circuit and a difference of pixel values in an overlapping pixel region relative to two X-ray images adjacent each other with respect to the subject;
an offset correction circuit that generates an X-ray image following each offset correction, and executes respectively the processing of every said data line, in which said offset correction value corresponding to a position of such a pixel is subtracted from the pixel value of said pixel relative to an X-ray image, in place in an upper side of a move direction, among two adjacent X-ray images with respect to said subject; and
wherein an image connection circuit conducts said long-length imaging by connecting the X-ray images following the offset correction was provided by said offset correction circuit.

### Claim 2

A method of operating an X-ray imaging device, comprising the steps of:
providing an X-ray imaging device that conducts an X-ray imaging of a subject during a use;
operating an X-ray irradiation means to irradiate an X-ray to a subject during said use;
operating a detection means to detect the X-ray transmitted through the subject during said use;
using an X-ray detection means to acquire and connect a plurality of X-ray images provided by said X-ray detection means while moving parallel to a defined data line of said X-ray detection means when said plurality of X-ray images are acquired by said X-ray detection means and are connected to thereby generate a long-length image during a long-length imaging;
storing in a configuration data storage means that stores configuration data of a signal intensity, which is a model data predetermined prior to the long-length imaging, depending on a position defined along a move direction of the long-length imaging;
calculating with an offset correction value calculation circuit to calculate an offset correction value depending on a position along the move direction of the long-length imaging based on the configuration data of the signal intensity stored by the configuration data storage means and a detected difference of pixel values in an overlapping pixel region relative to two X-ray images adjacent to each other with respect to the subject; and
operating an offset correction circuit to generates an X-ray image following each offset correction, and executing respectively a processing of every data line in which said offset correction value corresponding to a position of such a pixel is subtracted from the pixel value of said pixel relative to an X-ray image, in place in an upper side of a move direction, among two adjacent X-ray images with respect to said subject; and
operating an image connection circuit that conducts said long-length imaging by connecting the X-ray images following the offset correction provided by said offset correction circuit.