Marker recognition and mark point positioning method and surgical navigation system

A positioning method and marker technology, applied in the field of medical image processing, to achieve the effect of good accuracy and robustness

Active Publication Date: 2017-06-27
NORTHEASTERN UNIV
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But this method is semi-automatic and must be implemented with human intervention
Therefore, there are some defects i

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  • Marker recognition and mark point positioning method and surgical navigation system
  • Marker recognition and mark point positioning method and surgical navigation system
  • Marker recognition and mark point positioning method and surgical navigation system

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Embodiment Construction

[0056] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0057] In this embodiment, a marker recognition and marker point positioning method and a surgical navigation system are provided, which are suitable for the registration process of the lung surgical navigation system. In this embodiment, a detailed description will be given by taking the marker recognition and marker point positioning of a chest CT image as an example, specifically as follows.

[0058] A marker recognition and marker point positioning method based on chest CT images runs on the Visual Studio platform, which is suitable for the registration process of a lung puncture surgery navigation system, and realizes a marker recognition and marker point positioning method based on chest CT images.

[0059] Step 1: Read the chest CT image:

[0060] Read ...

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Abstract

The invention belongs to the technical field of medical image processing, and particularly relates to a marker recognition and mark point positioning method and a surgical navigation system. The marker recognition and mark point positioning method comprises the following steps of reading a CT image, performing preliminary cutting on a suspected marker, obtaining a final suspected marker, performing marker recognition based on sequence characteristics, judging whether the final suspected marker is a correct marker or not, performing projection on the correct marker, calculating the normal vector and thickness of the correct marker according to the projected image, and therefore positioning a marker point. The invention further provides a surgical navigation system adopting the marker recognition and mark point positioning method. The marker recognition and mark point positioning method is independent of factory manufacturing parameters of the marker, is little affected by the stuck position and conditions of the marker, and has the good accuracy and robustness.

Description

technical field [0001] The invention belongs to the technical field of medical image processing, and in particular relates to a marker recognition and marker point positioning method and a surgical navigation system. Background technique [0002] Lung cancer is one of the diseases with the highest mortality rate in the world, and biopsy is the gold standard for lung tumor characterization. Routine lung biopsy requires lung puncture under the guidance of CT to remove biopsy tissue for pathological examination. Lung biopsy surgery needs to rely on the experience of doctors for clinical operations, and CT cannot be used for real-time imaging during the operation. Therefore, in order to successfully obtain living tissue, it is necessary to puncture the patient multiple times and perform multiple CT scans for confirmation. Lung puncture surgery navigation system can avoid this problem. The surgical navigation system performs path planning based on the patient's preoperative CT ...

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Application Information

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IPC IPC(8): A61B90/00A61B34/20
Inventor 鲍楠赵威崔智铭康雁
Owner NORTHEASTERN UNIV
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