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Methods, systems, and computer programs for segmenting a tooth's pulp region from an image

一种图像对、区域的技术，应用在计算机程序领域

Active Publication Date: 2020-12-25
MEDICIM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the method of Jud et al. allows to predict the probability of image elements being within the pulp region, the authors point out that the high variability between teeth in the shape of the pulp region is not relevant to building a statistical pulp shape model and integrating this model with pulp objects. Probability registration contradicts
Therefore, the method of Jud et al. cannot be used to segment the pulp region of teeth

Method used

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  • Methods, systems, and computer programs for segmenting a tooth's pulp region from an image
  • Methods, systems, and computer programs for segmenting a tooth's pulp region from an image
  • Methods, systems, and computer programs for segmenting a tooth's pulp region from an image

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Embodiment Construction

[0030] The invention will now be described with reference to specific embodiments thereof. These specific embodiments are intended to provide a better understanding for the skilled person, but are not intended to limit the scope of the present invention, which is defined by the appended claims, in any way. A list of abbreviations and their meanings is provided at the end of the detailed description.

[0031] figure 1 is a flowchart of a method in one embodiment of the invention. The method is computer implemented. That is, the method can be executed by a computer or a group of computers, although the present invention is not limited thereto. The methods may also be implemented as computer-implemented methods using hardware electronic circuitry, for example with a Field Programmable Gate Array (FPGA), or using a combination of one or more computers and hardware electronic circuitry.

[0032] The method aims at segmenting the pulp region of a tooth from a 2D or 3D image of s...

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Abstract

Methods, systems, and computer programs are disclosed for segmenting, from an image, a tooth's pulp region comprising a pulp chamber and root canals. Curvature- based shape recognition is performed (100) at different spatial scales using smoothed versions of the image. An indication of a point or region is received (200), located in the pulp chamber and referred to as 'seed'. The seed is used (300) as initial segmentation mask. An update procedure (410), iteratively carried out (400), comprises: (i) determining (411 ) candidate image elements for updating the segmentation mask, comprising: (i-1) in the first n iteration(s), a grayscale thresholding taking as reference the current segmentation mask; and, (i-2) in at least one iteration, taking the curvature-based shape recognition into account; (ii) retaining (412), among the candidate image elements, a region of connected candidate image elements that comprises the seed; and (iii) using (413) the retained region to update the segmentation mask.

Description

technical field [0001] The present invention relates to a method for segmenting the pulp region of a tooth from a two-dimensional (2D) or three-dimensional (3D) image of said tooth. The invention also relates to systems for carrying out such methods, and computer programs for carrying out such methods. Some embodiments of the invention may be used, for example, in planning endodontic treatment. Background technique [0002] Teeth have soft inner cores that contain nerves and relatively small blood vessels. This core is called the pulp region (dental pulp region) and extends from the crown to the tip of the root in the jawbone. When a tooth is cracked or has a deep cavity, bacteria can enter the pulp and cause a serious infection. If left untreated, such root canal infections can lead to pulp death, loss of the jaw bone, and loss of the tooth itself (see reference [1]; a list of references is provided at the end of this specification). These infections are treated by clea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/11G06T7/187A61B6/14
CPCG06T7/11G06T7/187G06T2207/10081G06T2207/20101G06T2207/20164G06T2207/30036A61B6/032A61B6/4085A61B6/51G06T7/136G06T7/194G06T7/50G06T7/0014G06T2207/10116G06V2201/03
Inventor 巴特·戈里斯彼得·范利普特沃特·默勒曼安·埃伦
Owner MEDICIM