Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for post-processing of a 3D image data record, in particular for virtual colonography

An image data and image technology, which is applied in the field of reprocessing 3D image data sets, and can solve the problems of image errors, recognition difficulties, and inability to recognize

Inactive Publication Date: 2007-08-15
SIEMENS AG
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the subtraction performed in the virtual bowel cleansing leads to an image error especially at the transition between the area containing the marked contrast agent and the intestinal wall, which has a structure similar to the sought polyp, thus making identification difficult , can't even recognize

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for post-processing of a 3D image data record, in particular for virtual colonography
  • Method and apparatus for post-processing of a 3D image data record, in particular for virtual colonography
  • Method and apparatus for post-processing of a 3D image data record, in particular for virtual colonography

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] FIG. 1 shows very schematically the structure of a CT system constructed according to the method of the present invention. The computed tomography system comprises an x-ray source in the form of an x-ray tube 1 which emits a fan-shaped x-ray beam 5 in the direction of a detector row with detector elements 2 . Both the x-ray tube 1 and the detector element 2 are mounted on a swivel frame 6 , the so-called cradle, which rotates continuously around the patient 4 during the measurement. The patient 4 lies on a patient couch, not shown in FIG. 1 , which protrudes into the frame 6 . The carriage 6 rotates in the x-y plane of the Cartesian coordinate system x-y-z shown in the figure. The patient table can be moved along the z-axis, which corresponds to the slice thickness direction of the slices to be represented of the patient 4 . The extension of the x-ray beam 5 in the z direction (in this illustration the direction perpendicular to the plane of the drawing) is predetermi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method is disclosed for post-processing of a 3 D image data record which has been recorded by way of an imaging tomographic appliance of a body area, and covers at least one hollow organ which is at least partially filled with contrast agent. An imaging apparatus is also disclosed. In the method, an automatic three-dimensional edge detection process is carried out in the 3 D image data record in order to determine transitions between areas which have contrast agent and a wall of the hollow organ as boundary surfaces. A weighted high-pass filtering process is carried out at right angles to the boundary surfaces and leads to removal of the areas which have contrast agent and in which process areas around the transitions are given a lower weighting than areas which are further away from the transitions. After low-pass filtering in the areas around the transitions, a 3 D image data record is produced from which the areas which are filled with contrast agent are eliminated, without image artifacts being produced at the transitions to the wall of the hollow organ. The method can be used in particular for virtual bowel cleaning in virtual colonography.

Description

technical field [0001] The invention relates to a method for reprocessing a 3D image data set which was acquired with an imaging tomography system from a body part and which comprises at least one hollow organ which is at least partially filled with a contrast agent. The invention also relates to a device, in particular a computed tomography (CT) or magnetic resonance tomography (MR) system, for acquiring a 3D image data set of a body part of a patient, comprising at least one device for carrying out the method Image processing module. Background technique [0002] The main field of application of the method according to the invention and the associated device is the field of virtual colon imaging. Bowel cancer is a common cause of death in Western countries. A benign early stage of the disease are polyps, which develop in the bowel long before bowel cancer develops. In many cases it takes years for polyps to develop into malignant carcinomas (Karzinomen). Therefore, an ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B5/055G06T11/00G06T5/00G01R33/54
CPCG06T2207/10081G06T7/0083A61K49/04G06T2207/30028G06T7/0012G06T7/12
Inventor 卢茨·冈德尔
Owner SIEMENS AG