CN108186116A - A kind of operation point of a knife heat source imaging system and its method - Google Patents

Abstract

The invention discloses a scalpel tip heat source imaging system and its method, comprising: a 3D model building part for integrated processing of CT images: by collecting and analyzing multiple CT scan images of a patient, processing the scanned CT images to construct a patient's image 3D simulation image to define the coordinate data of a certain part of the patient; the scalpel tip capture part: capture the heated scalpel, then measure and calculate, and then use image processing technology to locate the middle point of the scalpel, which is the position of the scalpel tip; image marking Display part: After determining the CT longitudinal scan image according to the coordinates of the tip of the scalpel, the image grayscale processing is performed on the scan image, and the marking is specifically deepened in combination with the lateral position and the transverse position. The invention tracks the position of the scalpel tip in real time, displays it in the corresponding image system, locates the position of the scalpel tip, assists and guides the doctor to perform the operation, and solves the problem that novices or interns cannot accurately judge the position of various tissues and organs of the patient. question.

Description

A scalpel tip heat source imaging system and method thereof

technical field

The invention relates to the technical field of medical electronics, in particular to a scalpel tip heat source imaging system and a method thereof.

Background technique

High-frequency electric knife (high-frequency surgical device) is an electrosurgical instrument that replaces a mechanical scalpel for tissue cutting. It heats the tissue when the high-frequency and high-voltage current generated by the effective electrode tip contacts the body, and realizes the separation and coagulation of the body tissue, thereby achieving the purpose of cutting and hemostasis.

CT (Computed Tomography), that is, electronic computer tomography, it uses precisely collimated X-ray beams, γ-rays, ultrasound, etc., together with highly sensitive detectors, to conduct cross-sectional scans one after another around a certain part of the human body. It has the characteristics of fast scanning time and clear images, and can be used for the examination of various diseases; according to the different rays used, it can be divided into: X-ray CT (X-CT), ultrasonic CT (UCT) and γ-ray CT (γ-CT) )Wait.

Digital image processing (Digital Image Processing) is a method and technology for removing noise, enhancing, restoring, segmenting, and extracting features from an image through a computer. The emergence and rapid development of digital image processing are mainly affected by three factors: one is the development of computers; the other is the development of mathematics (especially the creation and improvement of discrete mathematics theory); , military, industrial and medical applications demand growth. Digital image processing is widely and effectively used in biomedical engineering. In addition to the CT technology described above, there is another type of processing and analysis of medical microscopic images, such as red blood cell and white blood cell classification, chromosome analysis, cancer cell identification, etc. In addition, image processing technology is widely used in medical diagnosis such as X-ray lung image enhancement, ultrasonic image processing, electrocardiogram analysis, and stereotactic radiation therapy.

Thermal imaging is a detection device that detects infrared energy (heat) through non-contact and converts it into an electrical signal, and then generates a thermal image and temperature value on the display, and can calculate the temperature value. The functions of thermal imaging include: reminder of inflammation, early warning of tumor, reminder of peripheral nerve disease, analysis of other difficult diseases, and tracking of curative effect.

In view of the fact that many novices or interns cannot accurately judge the position of various tissues and organs of patients, in order to solve these disadvantages, facilitate the rapid progress and development of interns, and experienced doctors need real-time visualization of surgery to understand the anatomical adjacency of deep structures. Traditional surgery Knives have been gradually replaced by thermal cutting scalpels. The biggest technical problem is to accurately capture the position of the tip of the scalpel and the 3D imaging of the corresponding position in the thermal imaging system, but the existing technology has not yet achieved this effect. good plan.

Contents of the invention

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a scalpel tip heat source imaging system and its method to solve the deficiencies of the prior art.

In order to achieve the above object, the present invention provides a scalpel tip heat source imaging system, including:

Integrate and process the 3D model building part of CT images: by collecting and analyzing multiple CT scans of patients, image enhancement is performed on the scanned CT images, and then the images are compressed and coded, and the decoded images are constructed to construct a 3D simulation image of the patient. , y, z three-dimensional data storage, define the horizontal axis as x, the vertical axis as y, and the vertical axis as z. If the (x, y, z) coordinate point data is not zero, it is the data of a certain part of the patient;

Scalpel tip capture part: capture the heated scalpel, then measure and calculate, and then use image processing technology to locate the middle point of the scalpel, which is the position of the scalpel tip, named (x, y, z);

Image marking display part: After determining the CT longitudinal scan image according to the coordinates of the scalpel tip, the image grayscale processing is performed on the scan image, and the marking is specifically deepened in combination with the lateral position and the transverse position.

Further, the temperature at the tip of the scalpel is about 100°C, with 70% of the temperature as the limit point.

Further, the scalpel tip capturing part captures the heating scalpel at a frequency of 50 Hz.

Further, the scalpel tip catching part is installed at a position 150 cm from the right side of the operating table.

Further, the image processing technology used for locating the middle point of the scalpel by using the image processing technology includes but not limited to: image recognition, infrared, and ultrasound.

A scalpel tip heat source imaging method, the specific implementation steps are:

The first step is to scan the heat source image at a refresh rate of 50HZ, then judge the position of the scalpel tip according to the predetermined threshold, and determine its coordinates (x, y, z) according to the comparison calculation formula in image processing;

In the second step, in the case of known coordinates, according to its Y-axis (longitudinal) coordinates, the corresponding CT scan image that has been image-processed is displayed in the display system, and the scan image is enhanced;

The third step is to mark out the X (horizontal) and Z (lateral) coordinates in the image corresponding to the display system. For the convenience of observation, the image can be zoomed in and out.

The beneficial effects of the present invention are:

A scalpel tip heat source imaging system of the present invention, according to the phenomenon of high-frequency scalpel heating and cutting, uses thermal imaging to capture the coordinates of the scalpel tip heat source point, and then combines digital image processing technology to simulate the surgical environment and the patient's image system to form Corresponding visual images, and can continuously and dynamically track the position of the scalpel tip in real time, and display it in the corresponding image system, so as to locate the position of the scalpel tip, assist and guide the doctor to perform the operation, and solve the problem that novices or interns cannot Accurately determine the location of various tissues and organs of the patient.

The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

Description of drawings

Fig. 1 is a system structure block diagram of the present invention.

Fig. 2 is a system flow chart of the present invention.

Detailed ways

Embodiment one

As shown in Figures 1 and 2, an imaging system for capturing the position of the scalpel tip. The system includes:

A. The 3D model building part of integrated processing of CT images: by collecting and analyzing multiple CT scans of the patient, image enhancement is performed on the scanned CT images, and then the images are compressed and encoded, and the decoded images are constructed to construct a 3D simulation image of the patient. Stored in x, y, z three-dimensional data, define the horizontal axis as x, the vertical axis as y, and the vertical axis as z. If the (x, y, z) coordinate point data is not zero, it is the data of a certain part of the patient;

B. In the part of capturing the tip of the scalpel: Install a thermal imaging capture device at 150cm to the right of the operating table. This device can capture the heated scalpel at a frequency of 50Hz. According to the measurement and calculation, the temperature at the tip of the scalpel is 100°C Left or right, you can use 70% of the temperature as the limit point in the program to locate the position more accurately, and then use image processing technology to locate the middle point, which is the position of the scalpel tip, named (x, y, z).

C. Image marking display part: After determining the CT longitudinal scanning image according to the coordinates of the scalpel tip, the image grayscale processing is performed on the scanning image, and the marking is specifically deepened in combination with the lateral position and the horizontal position, so that the doctor can quickly and accurately identify the position.

The specific implementation steps are as follows:

The first step is to scan the heat source image with a refresh rate of 50HZ, and then judge the position of the scalpel tip according to the predetermined threshold, and determine its coordinates (x, y, z) according to the comparison calculation formula in image processing, corresponding to the system in part A coordinate.

In the second step, in the case of known coordinates, according to its Y-axis (longitudinal) coordinates, the corresponding CT scan image that has been image-processed is displayed on the display system, and the scan image is enhanced.

The third step is to mark the X (horizontal) and Z (lateral) coordinates in the image corresponding to the display system. For the convenience of observation, the image can be zoomed in and out.

After determining the position of the scalpel tip, the surgical operation can be performed according to the established surgical route.

Embodiment two

The difference from the first embodiment is that after the operation of the predetermined operation route, the next operation should be performed at the end point. In the same way, continue to part B and C, complete the follow-up implementation steps, re-plan a new surgical route, continue the surgical operation from the end point, and make minor corrections based on the different pictures of the position of the knife tip according to the actual part, combined with the doctor's own experience, Complete the next operation.

It is worth noting that the patient needs to be fixed before using the system. The simplest and most practical is to anesthetize the patient who needs surgery before the CT scan and fix it with a device (clinically, it is fixed with a bandage, which can be invented Special fixation scheme to prevent deviation), when performing CT scan, the system will position the various parts of the patient (especially the body surface, because our operating bed scale not only needs the above-mentioned fixation device to assist in adjustment, but more importantly It is determined according to the confirmed and reliable body surface positioning corresponding to CT bony landmarks, etc.), and can be adjusted and corrected under operation to ensure that the system coordinates will not deviate. At the same time, the doctor during use You can operate the system by yourself to fine-tune some parameters, etc., to facilitate comparison operations. The parameters include image size, positioning calibration, etc.

A scalpel tip heat source imaging system of the present invention, according to the phenomenon of high-frequency scalpel heating and cutting, uses thermal imaging to capture the coordinates of the scalpel tip heat source point, and then combines digital image processing technology to simulate the surgical environment and the patient's image system to form Corresponding visual images, and can continuously and dynamically track the position of the scalpel tip in real time, and display it in the corresponding image system, so as to locate the position of the scalpel tip, assist and guide the doctor to perform the operation, and solve the problem that novices or interns cannot Accurately determine the location of various tissues and organs of the patient.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (6)

1. A scalpel tip heat source imaging system, characterized in that it comprises: Integrate and process the 3D model building part of CT images: by collecting and analyzing multiple CT scans of patients, image enhancement is performed on the scanned CT images, and then the images are compressed and coded, and the decoded images are constructed to construct a 3D simulation image of the patient. , y, z three-dimensional data storage, define the horizontal axis as x, the vertical axis as y, and the vertical axis as z. If the (x, y, z) coordinate point data is not zero, it is the data of a certain part of the patient; Scalpel tip capture part: capture the heated scalpel, then measure and calculate, and then use image processing technology to locate the middle point of the scalpel, which is the position of the scalpel tip, named (x, y, z); Image marking display part: After determining the CT longitudinal scan image according to the coordinates of the scalpel tip, the image grayscale processing is performed on the scan image, and the marking is specifically deepened in combination with the lateral position and the transverse position. 2. A scalpel tip heat source imaging system according to claim 1, characterized in that: the temperature at the scalpel tip is around 100°C, with 70% of the temperature as the limit point. 3 . The imaging system for scalpel tip heat source according to claim 1 , wherein the scalpel tip capturing part captures the heating scalpel at a frequency of 50 Hz. 4 . 4. A scalpel tip heat source imaging system according to claim 1, wherein the scalpel tip capture part is installed at a position 150 cm to the right of the operating table. 5. A scalpel tip heat source imaging system according to claim 1, wherein the image processing techniques used to locate the midpoint of the scalpel using image processing techniques include but are not limited to: image recognition, infrared, ultrasonic . 6. A scalpel tip heat source imaging method, characterized in that the implementation steps are: The first step is to scan the heat source image at a refresh rate of 50HZ, then judge the position of the scalpel tip according to the predetermined threshold, and determine its coordinates (x, y, z) according to the comparison calculation formula in image processing; In the second step, in the case of known coordinates, according to its Y-axis (longitudinal) coordinates, the corresponding CT scan image that has been image-processed is displayed in the display system, and the scan image is enhanced; The third step is to mark out the X (horizontal) and Z (lateral) coordinates in the image corresponding to the display system. For the convenience of observation, the image can be zoomed in and out.