# US 11,298,092 B2 · X-ray imaging device

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- Number: US 11,298,092 B2
- Document ID: US11298092B2
- Status: Granted
- Kind: B2
- Application number: 15/500,093
- Filed: 2015-07-29
- Published: 2017-08-31
- Granted: 2022-04-12
- Earliest claimed: 2014-07-29
- Assignees: VATECH Co., Ltd.; VATECH EWOO Holdings Co., Ltd.
- Applicants: VATECH Co., Ltd.; VATECH EWOO Holdings Co., Ltd.
- Inventors: Sungil Choi
- Web page: https://patentgrep.com/patent/US11298092B2

## CPC

- A61B 6/51: for dentistry
- A61B 6/03: Computed tomography [CT]
- A61B 6/4435: {the source unit and the detector unit being coupled by a rigid structure}
- A61B 6/4452: {the source unit and the detector unit being able to move relative to each other}
- A61B 6/5205: {involving processing of raw data to produce diagnostic data}
- G01N 23/046: using tomography, e.g. computed tomography [CT]
- G06T 12/10: Image preprocessing, e.g. calibration, positioning of sources or scatter correction
- A61B 6/025: {Tomosynthesis}
- G06T 3/00: Geometric image transformations in the plane of the image
- G06T 2207/10072: Tomographic images
- G06T 2207/10116: X-ray image
- G06T 2207/30036: Dental; Teeth
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

Disclosed is an X-ray imaging device, which is capable of providing a tomographic image of an image layer disposed between an axis of rotation and an X-ray source. The imaging device according to the present invention includes a radiography unit having an X-ray source and an X-ray sensor disposed to face each other with a rotating axis therebetween, wherein the X-ray sensor configured to obtain X-ray transmission images, a driver configured to rotate the X-ray source and the X-ray sensor about the rotating axis, and an image processor configured to provide a two-dimensional tomographic image of an image layer disposed between the rotating axis and the X-ray source, by shifting and overlapping the X-ray transmission images after reversing left and right at least some of the X-ray transmission images.

## Claims

### Claim 1

An X-ray imaging device comprising:
a radiography unit having an X-ray source and an X-ray sensor, wherein the X-ray source and the X-ray sensor are disposed to face each other with a rotating axis therebetween and rotate about the rotating axis in a first direction, the X-ray sensor is configured to obtain a plurality of X-ray transmission images; and
an image processor configured to generate a two-dimensional tomographic image of a target object in a region of interest in a patient's predetermined region, another object in a different image layer of the same region partially blocking said target object from being directly detected by the X-ray sensor, said image processor further configured to: flip the image orientation, in a left to right direction, of at least some of said plurality of X-ray transmission images of the target realign all of the flipped X-ray transmission images with each other in the first direction, such that the image of the target object in the flipped X-ray transmission images appears at a same position within each flipped transmission image, and overlaying the realigned, flipped X-ray transmission images on each other, such that the images of the target object overlap within each of the flipped, aligned, and overlaid transmission images to create said two-dimensional tomographic image.