Semiautomatic segmentation method for estimating three-D volumes

A technology of three-dimensional objects and volume, which is applied in the field of estimating the volume of three-dimensional objects, and can solve problems such as long work

Inactive Publication Date: 2006-04-12
GE MEDICAL SYSTEMS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method forces the operator to draw the shape of the object, which requires detailed and lengthy work

Method used

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  • Semiautomatic segmentation method for estimating three-D volumes
  • Semiautomatic segmentation method for estimating three-D volumes
  • Semiautomatic segmentation method for estimating three-D volumes

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Embodiment Construction

[0024] as people in figure 1 As can be seen in , a final shape close to a three-dimensional body is formed by multiple cut planes defined by three segments, for example segments 1 to 3 define triangular plane 4 . In this way, a three-dimensional object not shown in the figure is approximated by many triangular surfaces, the coordinates of whose vertices are known. This enables volume calculations for the shape.

[0025] The operator starts by determining the 6 points of the object, the upper point 11, the lower point 12, the left point 13, the right point 14, the front point 15, and the figure 1 The back dot that is not visible in . The first shape roughly determines the three-dimensional body, and the positioning of the six points must be accurate, because their determination is related to the determination of future adjacent points. In order to obtain a satisfactory determination, it will be necessary to check their location on different slices of the object.

[0026] Af...

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Abstract

The invention concerns a method for estimating and segmenting the volume of a three-dimensional object in medical imaging, consisting in defining a given number of base points constituting a first three-dimensional form defined by facets; each facet of the first form being defined by three segments, the segments are divided by defining second order points adapted to the object outline so as to constitute a second three-dimensional form closer to the object outline than the first form; each segment is iteratively divided into sub-segments by defining third order points adapted to the object outline so as to constitute a third three-dimensional form closer to the object outline than the second form; the volume of the third form is then computed.

Description

technical field [0001] The invention relates to estimating the volume of three-dimensional objects, especially the field of estimating the volume of three-dimensional objects in medical imaging. Background technique [0002] In certain medical imaging applications, one needs to accurately know the volume of a three-dimensional volume, such as a human organ or part of an organ. [0003] Methods are known which approximate the volume of an object by recognizing the shape of the object in terms of different slices, and then model the trajectories between slices using continuous slopes. Three-dimensional volumes are modeled by many frustum-shaped volumes of thin thickness. However, this method forces the operator to draw the shape of the object, which requires detailed and lengthy work. Contents of the invention [0004] The present invention attempts to solve the problems of the above method, and proposes a simple and easy method, and can obtain desired accuracy in a very s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/60A61B5/00G06T1/00G06T7/00G06T15/00G06T17/20
CPCG06T7/602G06T17/20G06T7/62G06T7/60
Inventor J·诺普利奥奇E·斯特法尼
Owner GE MEDICAL SYSTEMS INC
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