Fetal head posture 3D display method

A 3D and posture technology, applied in the field of obstetrics and delivery monitoring, can solve the problems of inaccurate fetal head position, no fetal posture recognition function, etc.

Active Publication Date: 2022-06-24
GUANGZHOU SUNRAY MEDICAL APP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the existing products on the market have this fetal posture recognition function
[0003] And CN106963378A - a fetal head orientation measurement method based on electromagnetic positioning and ultrasonic imaging, the fetal head orientation calculated by the patent is only the azimuth angle, wherein the fetal head flexion is poor The pitch angle can be judged, and the uneven inclination of the tire head needs to be judged by the rotation angle. These two abnormalities cannot be recognized by ordinary azimuth angles, so the patent determines that the tire head’s orientation is not accurate enough

Method used

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  • Fetal head posture 3D display method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] The present invention provides a 3D display method of fetal head posture, refer to figure 1 and 3 and 4, including:

[0099] S1: Obtain an ultrasound image of the upper and lower borders of the pubic symphysis and the fetal head of the patient, determine the AoP angle based on the ultrasound image, and calculate the corresponding fetal presentation position based on the AoP angle;

[0100] S2: Perform initial recognition on the ultrasound image, obtain corresponding recognition feature points, and determine a corresponding recognition mode based on the recognition feature points;

[0101] S3: determining the first three-dimensional coordinate value corresponding to the first feature point in the patient's pelvis in the magnetic field coordinate system based on the positioning sensor and the fetal presentation position;

[0102] S4: Convert the identification feature points to the magnetic field coordinate system where the pelvis is located, and obtain a second three-d...

Embodiment 2

[0121] On the basis of Example 1, in the 3D display method for the posture of the fetal head, S1: Obtain an ultrasound image of the upper and lower edges of the symphysis pubis and the fetal head of the patient, determine the AoP angle based on the ultrasound image, and determine the AoP angle based on the AoP angle. Calculate the corresponding fetal presentation position, including:

[0122] Use the ultrasound probe to scan the abdomen of pregnant women longitudinally to obtain the ultrasound images of the upper and lower borders of the pubic symphysis and the fetal head;

[0123] Determine the tangent to the lowest point of the fetal head through the upper and lower borders of the pubic symphysis in the ultrasound image, and use the angle between the tangent and the long axis of the pubic symphysis in the ultrasound image as the corresponding AoP angle;

[0124] The corresponding tire presentation position is calculated based on the AoP angle.

[0125] In this embodiment, t...

Embodiment 3

[0130] On the basis of Embodiment 2, in the 3D display method of the fetal head posture, S2: perform initial recognition on the ultrasonic image, obtain corresponding recognition feature points, and determine a corresponding recognition mode based on the recognition feature points ,include:

[0131] initial identification of the ultrasound image;

[0132] When only the occipital end and the forehead end are identified from the ultrasound image, the occipital end (corresponding positioning point such as the physical center point) and the forehead end (the corresponding positioning point such as the physical center point) are used as the The identification feature points contained in the ultrasound image are determined, and the corresponding identification pattern is determined as the midline pattern of the brain;

[0133] When the occipital end, the forehead end and the two ends of the biparietal diameter are identified from the ultrasound image, the occipital end and the fore...

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Abstract

The invention provides a 3D display method for fetal head postures, which comprises the following steps: acquiring ultrasonic images of upper and lower edges of symphysis pubis of a patient and a fetal head, and calculating a corresponding fetal pre-exposure position based on the ultrasonic images; carrying out primary identification on the ultrasonic image, and determining a corresponding identification mode; determining a first three-dimensional coordinate value corresponding to a first feature point in the pelvis of the patient in a magnetic field coordinate system on the basis of the positioning sensor and the fetal advance exposure position; the recognition feature points are converted into a magnetic field coordinate system where the pelvis is located, and a second three-dimensional coordinate value corresponding to each recognition feature point in the magnetic field coordinate system is obtained; determining attitude angles (including an azimuth angle, a pitch angle and a rotation angle) of the fetal head; constructing a corresponding complete three-dimensional head basin model and transmitting the model to a display device for display; the method is used for accurately measuring the azimuth posture and position of the fetal head and displaying the azimuth posture and position through a 3D visualization technology, the method is more visual and vivid, and the delivery difficulty and process are accurately and visually judged without depending on the experience of doctors.

Description

technical field [0001] The invention relates to the technical field of obstetric delivery monitoring, in particular to a 3D display method of fetal head posture. Background technique [0002] At present, abnormal fetal head position is an important cause of head dystocia. The abnormal position of the fetal head is divided into four types: abnormal rotation of the fetal head (persistent occipital transverse / posterior occipital position); poor flexion of the fetal head (forehead presentation, face presentation, chin presentation); abnormal fetal head connection (high Straight anterior position, high straight posterior position); the fetal head is unevenly inclined (anteriorly unevenly inclined, posteriorly unevenly inclined). Through magnetic field positioning and ultrasound images, the angle and orientation can be accurately measured, and the 3D cephalopelvic display of the fetal head posture can be obtained, helping doctors or midwives to identify abnormalities early and co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/08
CPCA61B8/0866A61B8/466
Inventor 李晓婉李丽刘文扬林伙旺杨政刘立军杨星宇
Owner GUANGZHOU SUNRAY MEDICAL APP
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