Device and method for editing a panoramic radiography image

Patent metadata

Field	Value
Publication number	US-2021407159-A1
Application number	US-201917290368-A
Country	US
Kind code	A1
Filing date	Nov 7, 2019
Priority date	Nov 7, 2018
Publication date	Dec 30, 2021
Grant date	—

Abstract

The present invention relates to a device for editing a panoramic radiography image of an examination object generated by a panoramic X-ray machine, comprising: an input interface for receiving the panoramic radiography image as well as reconstruction data of the panoramic radiography image, the reconstruction data including information on a course of projection lines of the panoramic radiography image between an X-ray source and an X-ray detector of the panoramic X-ray machine as well as information on an image surface of the panoramic radiography image; an evaluation unit for evaluating the reconstruction data and for determining an image section of the panoramic radiography image that has been generated on the basis of one of the projection lines with two intersection points with the image surface; an image editing unit for editing the panoramic radiography image based on the determined image section; and an output unit for outputting the edited panoramic radiography image. Moreover, the invention relates to a method for editing a panoramic radiography image of an examination object generated by a panoramic X-ray machine as well as a diagnosis system for examining a craniomaxillofacial area of a patient.

First claim

1 . Device for editing a panoramic radiography image of an examination object generated by a panoramic X-ray machine, comprising:
an input interface for receiving the panoramic radiography image as well as reconstruction data of the panoramic radiography image, the reconstruction data including information on a course of projection lines of the panoramic radiography image between an X-ray source and an X-ray detector of the panoramic X-ray machine as well as information on an image surface of the panoramic radiography image; an evaluation unit for evaluating the reconstruction data and for determining, on the basis of one of the projection lines with two intersection points with the image surface, an image section of the panoramic radiography image that has been generated; an image editing unit for editing the panoramic radiography image based on the determined image section; and an output unit for outputting the edited panoramic radiography image.

2 . Device according to claim 1 , wherein the input interface is configured to receive the panoramic radiography image as well as the reconstruction data from an extraoral panoramic dental. X-ray machine.

3 . Device according to claim 1 , wherein the reconstruction data comprise a relative position of the image surface in relation to the projection lines and/or a description of a movement of a movable X-ray source in relation to the examination object.

4 . Device according to claim 1 , wherein the image editing unit is configured to mark a section and/or a spot in the panoramic radiography image; and
the mark preferably comprises a color tag and/or a frame.

5 . Device according to claim 1 , wherein the evaluation unit is configured to determine a multi-part in particular a two-part, image section that corresponds to all projection lines with two intersection points with the image surface.

6 . Device according to claim 1 , wherein the image editing unit is configured to subtract an image value of a first intersection point, preferably close to the X-ray source, of a projection line with the image surface from an image value of a second intersection point of the projection line with the image surface.

7 . Device according to claim 1 , wherein the input interface is configured to receive a first marking position, which corresponds to a first intersection point of a first projection line with the image surface; and
the evaluation unit is configured to determine an image section, which corresponds to a second intersection point of the first projection line with the image surface.

8 . Device according to claim 7 with a user interface for entering the marking position by a user of the device, preferably by choosing a position on a display of the panoramic radiography image by means of a touch screen, touch pad, touch pen, and/or a computer mouse.

9 . Device according to claim 1 , wherein the output unit is configured to output the edited panoramic radiography image on a display.

10 . Diagnosis system for examining a craniomaxillofacial area of a patient, with:
an extraoral panoramic dental X-ray machine with an X-ray source that is movable around a patient's head and with an X-ray detector that is fixedly connected with the X-ray source; and a device according to claim 1 .

11 . Diagnosis system according to claim 10 , wherein the panoramic dental X-ray machine is configured to generate the panoramic radiography image from a composition of a plurality of single images that have been generated at different positions of the X-ray source and the X-ray detector relative to the examination object.

12 . Method for editing a panoramic radiography image of an examination object generated by a panoramic X-ray machine, comprising the steps of:
receiving the panoramic radiography image as well as reconstruction data of the panoramic radiography image, the reconstruction data including information on a course of projection lines of the panoramic: radiography image between an X-ray source and an X-ray detector of the panoramic X-ray machine as well as information on an image surface of the panoramic radiography image; characterized by further comprising: evaluating the reconstruction data and determining, on the basis of one of the projection lines with two intersection points with the image surface, an image section of the panoramic radiography image that has been generated: editing the panoramic radiography image based on the determined image section; and outputting the edited panoramic radiography image.

13 . Computer program product with program code for executing the steps of the method according to claim 12 when the program code is executed on a computer.

Assignees

• Dentsply Sirona Inc

Inventors

• Eichner Stefan
• Hülsbusch Markus

Classifications

• G06T12/30

  Image post-processing, e.g. metal artefact correction · CPC title

• A61B6/501

  for diagnosis of the head, e.g. neuroimaging or craniography · CPC title

• A61B6/469

  for selecting a region of interest [ROI] · CPC title

• A61B6/465

  adapted to display user selection data, e.g. graphical user interface, icons or menus · CPC title

• A61B6/462

  characterised by constructional features of the display · CPC title