CN113081052A - Processing method of volume data of ultrasonic scanning target - Google Patents
Processing method of volume data of ultrasonic scanning target Download PDFInfo
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- CN113081052A CN113081052A CN202110350850.4A CN202110350850A CN113081052A CN 113081052 A CN113081052 A CN 113081052A CN 202110350850 A CN202110350850 A CN 202110350850A CN 113081052 A CN113081052 A CN 113081052A
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- 238000000034 method Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000001788 irregular Effects 0.000 abstract description 4
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- 210000000481 breast Anatomy 0.000 description 3
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0833—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures
- A61B8/085—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures for locating body or organic structures, e.g. tumours, calculi, blood vessels, nodules
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0825—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of the breast, e.g. mammography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
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Abstract
The invention discloses a method for processing volume data of an ultrasonic scanning target, which comprises the following steps: s1, scanning the set positions of the target respectively through an ultrasonic diagnostic apparatus, and performing three-dimensional reconstruction on the data obtained by scanning to obtain images of the cross section, the sagittal plane and the coronal plane of the whole target; s2, differentiating the transverse plane, the sagittal plane and the coronal plane, namely selecting images at fixed distances on the coronal plane, the transverse plane and the sagittal plane respectively; and S3, drawing the outline of each layer of the measured target to measure the area in the outline of each layer, multiplying the area by the height of each layer, and obtaining the total volume of the target according to the principle of calculus. Compared with the existing volume estimation method, the method has the advantages that the error is small, and the deviation among different observers is small; the invention can measure the volume of the ultrasonic scanning target, can also measure the area of the target on a certain layer, is suitable for volume measurement of regular targets, and is also suitable for measurement of irregular target volume.
Description
Technical Field
The invention belongs to the technical field of information processing, and particularly relates to a method for processing volume data of an ultrasonic scanning target.
Background
In the prior art, the target volume of ultrasonic scanning is measured and calculated based on an ellipsoid formula (namely, the size of three radial lines of the length, the width and the height of a target is measured by selecting a maximum tangent plane, and the target volume (length multiplied by width multiplied by height/2)) is calculated according to the three radial lines. The method has the advantages that the error of the calculated target volume is large, the deviation among different observers is large, and the method is not suitable for targets with irregular shapes.
Disclosure of Invention
The invention aims to provide a method for processing volume data of an ultrasonic scanning target, and aims to solve the problems that the existing volume estimation method has large error and large deviation among different observers, and is not suitable for targets with irregular shapes.
The invention is realized in such a way that a processing method of volume data of an ultrasonic scanning target comprises the following steps:
s1, scanning the set positions of the target respectively through an ultrasonic diagnostic apparatus, and performing three-dimensional reconstruction on the data obtained by scanning to obtain images of the cross section, the sagittal plane and the coronal plane of the whole target;
s2, differentiating the transverse plane, the sagittal plane and the coronal plane, namely selecting images at fixed distances on the coronal plane, the transverse plane and the sagittal plane respectively;
and S3, drawing the outline of each layer of the measured target to measure the area in the outline of each layer, multiplying the area by the height of each layer, and obtaining the total volume of the target according to the principle of calculus.
Preferably, in step S3, the measuring step determines that the area in each slice profile is completed by a pixel measurement method, which specifically includes: on a picture, under the condition that the area is in proportion to the pixels, the conversion ratio of the area to the pixels is calculated through a scale of the picture, and the pixels of the target on the layer are converted into the area, wherein: the area pixel ratios of images of a coronal plane, a transverse plane and a sagittal plane of the same target are different, and when the area is measured through the 3 sections, the area pixel ratios are required to be calculated respectively; the area pixel ratio of each layer image of the coronal plane of the same object is the same, and the area pixel ratio of each layer image of the transverse plane or the sagittal plane of the same object is the same.
Preferably, the target is an object detectable by ultrasound or an object inside the tissue.
Compared with the defects and shortcomings of the prior art, the invention has the following beneficial effects: compared with the existing volume estimation method, the method has the advantages that the error is small, and the deviation among different observers is small; the invention can measure the volume of the ultrasonic scanning target, can also measure the area of the target on a certain layer, is suitable for volume measurement of regular targets, and is also suitable for measurement of irregular target volume.
Drawings
FIG. 1 is a result of calculating the area-to-pixel ratio of a coronal plane image according to an embodiment of the present invention;
FIG. 2 is a calculation of pixels within a tumor contour according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention discloses a method for processing volume data of an ultrasonic scanning target, which comprises the following steps:
s1, scanning the set positions of the target respectively by an ultrasonic diagnostic apparatus, and performing three-dimensional reconstruction on the data obtained by scanning to obtain the cross section, sagittal plane and coronal plane images of the whole target
In step S1, the GE abrs ultrasonic diagnostic apparatus is used to scan the target object at the lateral position, the medial position and the normal position, and to scan the larger volume target at the upper position or the lower position. After the scanning is finished, the data are transmitted to an image data processing system for three-dimensional reconstruction, and the cross section, sagittal plane and coronal plane images of the whole object to be scanned are obtained.
S2, differentiating the transverse plane, the sagittal plane and the coronal plane, namely selecting images at fixed distances on the coronal plane, the transverse plane and the sagittal plane respectively
In step S2, the object to be measured is differentiated in the coronal plane, the transverse plane, and the sagittal plane, respectively, i.e., images are selected at a fixed distance in the coronal plane, the transverse plane, and the sagittal plane, respectively.
S3, drawing the outline of each layer of the measured object to measure the area in the outline of each layer, multiplying the area by the height of each layer, and obtaining the total volume of the object according to the principle of calculus
In step S3, the contour of each slice of the measured tumor is outlined by using the image processing software, so as to obtain the area in the contour, and the area is multiplied by the height (hi) of each slice (note: the height of each slice is the distance of the selected image time interval), Vi is Si × hi, and the total volume V of the tumor is V1+ V2+ V3+ … + Vn according to the principle of micro-integration.
In step S3, the measurement of the area in each slice profile is performed by a pixel measurement method, which specifically includes: on a picture, under the condition that the area is in proportion to the pixels, the conversion ratio of the area to the pixels is calculated through a scale of the picture, and the pixels of the target on the layer are converted into the area, wherein: the area pixel ratios of images of a coronal plane, a transverse plane and a sagittal plane of the same target are different, and when the area is measured through the 3 sections, the area pixel ratios are required to be calculated respectively; the area pixel ratio of each layer image of the coronal plane of the same object is the same, and the area pixel ratio of each layer image of the transverse plane or the sagittal plane of the same object is the same.
In the embodiment of the invention, the picture processing software is Adobe Photoshop CS6, but the implementation of the invention is not limited to the software. In addition, in the practical application of the present invention, the object is an object that can be detected by ultrasonic waves or an object inside a tissue, and therefore, the present invention is applicable to image processing of ultrasonic three-dimensional scan data, and an object of the ultrasonic three-dimensional scan may be a living organism, an inanimate organism, or an inanimate inorganic body.
For example, the operations of steps S1 to S3 described in the above embodiment are performed, in which in step S1, the bilateral breasts are scanned in the lateral, medial and true positions, and the large-volume breast is scanned in the superior or inferior direction. After the scanning is completed, in step S2, images are selected at a distance of 0.1cm in the coronal plane, the transverse plane, and the sagittal plane, respectively. The obtained results are shown in FIGS. 1-2, where FIG. 1 is the calculation result of the area-to-pixel ratio; introducing the image of the coronal plane of the breast into Adobe Photoshop CS6 software, wherein c is the image with a scale (length 5cm), and selecting a square (b) with the side length 5cm according to the scale, and the actual area of the square is 25cm2The software automatically detects the pixels 70756 (designated by d) within the selected square, from which the area-to-pixel ratio is derived. The a is tumor, which is hypoechoic, oval and clear in boundary. Fig. 2 shows the calculation result of the pixels in the section tumor contour, based on the step in fig. 1, the tumor contour is traced (indicated by a), the software automatically detects the pixels 3916 (indicated by d) in the traced contour, and the actual area in the section tumor contour can be calculated by combining the area pixel ratio calculated in fig. 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. A method of processing volumetric data of an ultrasonically scanned object, the method comprising the steps of:
s1, scanning the set positions of the target respectively through an ultrasonic diagnostic apparatus, and performing three-dimensional reconstruction on the data obtained by scanning to obtain images of the cross section, the sagittal plane and the coronal plane of the whole target;
s2, differentiating the transverse plane, the sagittal plane and the coronal plane, namely selecting images at fixed distances on the coronal plane, the transverse plane and the sagittal plane respectively;
and S3, drawing the outline of each layer of the measured target to measure the area in the outline of each layer, multiplying the area by the height of each layer, and obtaining the total volume of the target according to the principle of calculus.
2. The method for processing the volumetric data of the ultrasound scanning target according to claim 1, wherein in step S3, the measuring of the area in the outline of each slice is performed by a pixel measurement method, which comprises: on a picture, under the condition that the area is in proportion to the pixels, the conversion ratio of the area to the pixels is calculated through a scale of the picture, and the pixels of the target on the layer are converted into the area, wherein: the area pixel ratios of images of a coronal plane, a transverse plane and a sagittal plane of the same target are different, and when the area is measured through the 3 sections, the area pixel ratios are required to be calculated respectively; the area pixel ratio of each layer image of the coronal plane of the same object is the same, and the area pixel ratio of each layer image of the transverse plane or the sagittal plane of the same object is the same.
3. The method of processing volumetric data of an ultrasonically scanned object of claim 1, wherein the object is an object detectable by ultrasound or an object within tissue.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023072146A1 (en) * | 2021-10-26 | 2023-05-04 | 北京智愈医疗科技有限公司 | Transluminal ultrasonic automatic inspection system, control method, computer-readable storage medium and electronic device |
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