CN115797262A - Method and device for recommending portal information, processor and electronic equipment - Google Patents
Method and device for recommending portal information, processor and electronic equipment Download PDFInfo
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- CN115797262A CN115797262A CN202211386106.0A CN202211386106A CN115797262A CN 115797262 A CN115797262 A CN 115797262A CN 202211386106 A CN202211386106 A CN 202211386106A CN 115797262 A CN115797262 A CN 115797262A
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Abstract
The application discloses a method and a device for recommending radiation field information, a processor and electronic equipment, and relates to the technical field of radiotherapy, wherein the method comprises the following steps: acquiring a multi-layer target medical image of a target object; emitting rays to a planned target area in the multilayer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy organs-at-risk irradiated by the rays at each angle in the multilayer target medical image; according to each first volume value, performing a portal grading on the portal corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the portal corresponding to the minimum first grading value as a first to-be-recommended portal; and determining target field information of the target object according to the first to-be-recommended field. Through the method and the device, the problem that the efficiency of determining the radiation field is low due to the fact that the radiation field is determined by means of manual experience in the related technology is solved.
Description
Technical Field
The application relates to the technical field of radiotherapy, in particular to a method and a device for recommending portal information, a processor and electronic equipment.
Background
The aim of radiotherapy is to deliver the required dose to the target to destroy the tumour, while normal tissues and radiotherapy Organs At Risk (OAR) surrounding the target are protected as much as possible, at least not by irradiation beyond the dose limit.
In designing a treatment plan, there are many parameters that can be selected and adjusted, such as the type of radiation, the number of fields, the field weights, whether the wedge plate and the angle and direction of the wedge plate are used, the angle of field incidence, and so on. Traditionally, a plan designer must first determine the number of fields and the incident angles of the fields based on experience, and then determine the shape and dose weight of the fields as needed; the number and direction of fields selected is entirely dependent upon the experience of the plan designer. If the finally calculated dose distribution can not meet the requirements, the plan designer needs to change certain radiation field directions or simultaneously change the radiation field number and the corresponding dose weight, and then perform a new round of calculation. If the relationship between the target for radiotherapy (CTV) and OAR is complex, this trial and error process may take many rounds to arrive at a clinically acceptable, but not optimal, protocol. It is therefore necessary to study the setting of the portal direction, portal dose weight. In the prior art, the parameters are manually adjusted in a mode of multiple trials and modification, and although a group of radiation fields can be obtained finally, the process consumes a great deal of time and energy of a physicist.
Aiming at the problem that the efficiency of determining the radiation field is low due to the fact that the radiation field is determined by means of manual experience in the related technology, an effective solution is not provided at present.
Disclosure of Invention
The application mainly aims to provide a method and a device for recommending portal information, a processor and electronic equipment, so as to solve the problem that portal determination is performed by means of manual experience in the related art, and the portal determination efficiency is low.
In order to achieve the above object, according to an aspect of the present application, there is provided a method of recommending portal information. The method comprises the following steps: acquiring a multi-layer target medical image of a target object, wherein the multi-layer target medical image at least comprises planned target area delineation information of the target object and delineation information of a radiotherapy danger organ; emitting rays to a planned target area in the multi-layer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy endangered organ irradiated by the rays at each angle in the multi-layer target medical image; according to each first volume value, performing a portal grading on the portal corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the portal corresponding to the minimum first grading value as a first to-be-recommended portal; and determining the target field information of the target object according to the first to-be-recommended field.
Further, calculating a first volume value of the radiotherapy-compromised organ irradiated by the ray at each angle in the multi-layered target medical image comprises: calculating the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image; and calculating to obtain the plurality of first volume values according to the area value of the radiotherapy organs-at-risk irradiated by the rays under each angle in each layer of target medical image.
Further, according to each first volume value, performing a field score on a field corresponding to the ray at each angle, and obtaining a plurality of first score values includes: calculating the total volume value of the radiotherapy organs at risk in each layer of target medical image to obtain a plurality of second volume values; and setting a weight value of each radiotherapy organs at risk, and carrying out portal grading on the portal corresponding to the ray at each angle according to the weight value, the first volume value and the second volume value to obtain a plurality of first grading values.
Further, determining the target field information of the target object according to the first to-be-recommended field includes: determining the number of the first to-be-recommended shots; and if the number of the first to-be-recommended fields is equal to the preset target field number, determining the target field information of the target object according to the first to-be-recommended fields.
Further, after determining the number of the first to-be-recommended shots, the method further includes: if the number of the first to-be-recommended fields is not equal to the number of the preset target fields, determining a first angle of the first to-be-recommended fields; performing field grading again on the fields corresponding to the angles except the first angle to obtain a plurality of second grading values; taking the portal corresponding to the minimum second score value as a second portal to be recommended, and determining the number of the current portals to be recommended; and if the number of the current fields to be recommended is equal to the preset number of the target fields, determining the target field information of the target object according to the first field to be recommended and the second field to be recommended.
Further, after determining the number of the current to-be-recommended shots, the method further comprises: and if the number of the current to-be-recommended shots is not equal to the preset target shot number, determining a second angle of the second to-be-recommended shots, and repeatedly performing shot scoring on the shots corresponding to a plurality of angles except the first angle and the second angle until the number of the current to-be-recommended shots is equal to the preset target shot number, and determining target shot information of the target object according to the current to-be-recommended shots.
Further, performing portal scoring again on the portals corresponding to the plurality of angles except the first angle, and obtaining a plurality of second score values includes: calculating cosine values between the first angle and a plurality of angles except the first angle to obtain a plurality of cosine values; and according to the cosine values and the first score values, carrying out the portal grading again on the portals corresponding to the angles except the first angle to obtain second score values.
In order to achieve the above object, according to another aspect of the present application, there is provided a recommendation apparatus for portal information. The device includes: the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a multilayer target medical image of a target object, wherein the multilayer target medical image at least comprises planned target area delineation information of the target object and delineation information of a radiotherapy organs at risk; the calculation unit is used for emitting rays to a planning target area in the multilayer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy organs-at-risk irradiated by the rays at each angle in the multilayer target medical image; the first scoring unit is used for scoring the radiation field corresponding to the ray under each angle according to each first volume value to obtain a plurality of first score values, and taking the radiation field corresponding to the minimum first score value as a first to-be-recommended radiation field; and the first determining unit is used for determining the target field information of the target object according to the first to-be-recommended field.
Further, the calculation unit includes: the first calculation module is used for calculating the area value of the radiotherapy organs-at-risk irradiated by rays under each angle in each layer of target medical image; and the second calculation module is used for calculating the plurality of first volume values according to the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image.
Further, the first scoring unit includes: the third calculation module is used for calculating the total volume value of the radiotherapy organs at risk in each layer of target medical image to obtain a plurality of second volume values; and the setting module is used for setting a weight value of each radiotherapy endangered organ, and carrying out field grading on a field corresponding to the ray at each angle according to the weight value, the first volume value and the second volume value to obtain a plurality of first grading values.
Further, the first determination unit includes: the first determining module is used for determining the number of the first to-be-recommended shots; and the second determining module is used for determining the target field information of the target object according to the first to-be-recommended field if the number of the first to-be-recommended fields is equal to the preset target field number.
Further, the apparatus further comprises: a second determining unit, configured to determine a first angle of the first to-be-recommended field if the number of the first to-be-recommended fields is not equal to the preset target field number after the number of the first to-be-recommended fields is determined; the second scoring unit is used for scoring the radiation fields corresponding to the angles except the first angle again to obtain a plurality of second scoring values; the third determining unit is used for taking the portal corresponding to the minimum second score value as a second portal to be recommended and determining the number of the portals to be recommended currently; and the fourth determining unit is used for determining the target field information of the target object according to the first to-be-recommended field and the second to-be-recommended field if the number of the current to-be-recommended fields is equal to the preset target field number.
Further, the apparatus further comprises: and the execution unit is used for determining a second angle of the second to-be-recommended portal if the number of the current to-be-recommended portals is not equal to the preset target portal number after the number of the current to-be-recommended portals is determined, and repeatedly performing portal grading on the portals corresponding to a plurality of angles except the first angle and the second angle until the number of the current to-be-recommended portals is equal to the preset target portal number, and determining target portal information of the target object according to the current to-be-recommended portals.
Further, the second scoring unit includes: the fourth calculation module is used for calculating cosine values between the first angle and a plurality of angles except the first angle to obtain a plurality of cosine values; and the scoring module is used for scoring the shooting fields corresponding to the angles except the first angle again according to the cosine values and the first score values to obtain second score values.
In order to achieve the above object, according to another aspect of the present application, there is further provided a processor, wherein the processor is configured to execute a program, and the program executes to execute any one of the above methods for recommending portal information.
In order to achieve the above object, according to another aspect of the present application, there is also provided an electronic device, wherein the electronic device includes one or more processors and a memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement any one of the above recommendation methods for portal information.
Through the application, the following steps are adopted: acquiring a multi-layer target medical image of a target object, wherein the multi-layer target medical image at least comprises planned target area delineation information of the target object and delineation information of a radiotherapy danger organ; emitting rays to a planned target area in the multi-layer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy endangered organ irradiated by the rays at each angle in the multi-layer target medical image; according to each first volume value, performing a portal grading on the portal corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the portal corresponding to the minimum first grading value as a first to-be-recommended portal; and determining the target field information of the target object according to the first to-be-recommended field, so that the problem of low field determining efficiency caused by field determination depending on artificial experience in the related art is solved. In the scheme, the volume value of the radiation field irradiated to the radiotherapy organs at each angle is calculated, the influence degree of the radiation field at each angle on the radiotherapy organs at risk is fully considered, then the radiation field at each angle is scored through the volume value, the final target radiation field information is determined through the scoring of the radiation field at each angle, the radiation field at each angle can be more reasonably evaluated through the volume value, in the using process, only all angle spaces need to be traversed, scoring calculation can be performed on each angle, time-consuming iterative optimization is not needed, and the effect of improving the efficiency of determining the radiation field is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 is a flowchart of a recommendation method of portal information according to an embodiment of the present application;
fig. 2 is a flowchart of an alternative method for recommending portal information according to an embodiment of the present application;
fig. 3 is a schematic diagram of a recommendation device for portal information provided according to an embodiment of the present application;
fig. 4 is a schematic diagram of an electronic device provided according to an embodiment of the application.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention is described below with reference to preferred implementation steps, and fig. 1 is a flowchart of a method for recommending portal information according to an embodiment of the present application, and as shown in fig. 1, the method includes the following steps:
step S101, obtaining a multilayer target medical image of a target object, wherein the multilayer target medical image at least comprises planned target area delineation information of the target object and delineation information of a radiotherapy endangered organ;
step S102, emitting rays to a planned target area in the multilayer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy organs at risk irradiated by the rays at each angle in the multilayer target medical image;
step S103, according to each first volume value, performing a portal grading on the portal corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the portal corresponding to the minimum first grading value as a first portal to be recommended;
and step S104, determining target field information of the target object according to the first to-be-recommended field.
Specifically, the proposed method for recommending the portal information performs processing calculation based on the CT image (i.e., the target medical image) of the patient (i.e., the target object), and thus acquires a multi-layered target medical image of the target object.
The radiation is emitted at each of 360 ° at a preset position toward a planned target region in the multi-layered target medical image. The method comprises the steps of taking an isocenter as a starting point, taking a certain angle of 360 degrees as a direction, and taking a point which is 1000mm away from the isocenter in the direction as a preset position, wherein the isocenter is calculated in a mode that a three-dimensional coordinate of each pixel point of the PTV is obtained, and all values of the dimensionality are averaged in each dimensionality, namely the value of the isocenter in the dimensionality. It should be noted that the radiation emitted at each angle needs to cover all areas of the planned target.
The goal of radiation therapy is to deliver the required dose to the target area to destroy the tumor while the normal tissues and radiation-therapy organs-at-risk (OAR) surrounding the target area are protected as much as possible. Therefore, a first volume value of the radiotherapy-compromised organ irradiated by the ray at each angle in the multi-layered target medical image is calculated. And scoring the radiation field under each angle through the volume value of the irradiated radiotherapy organs at risk to obtain a first score value of each angle, and taking the radiation field corresponding to the minimum first score value as a first to-be-recommended radiation field.
In an alternative embodiment, the first scoring value of the field corresponding to each angle can be calculated by using the following formula:
wherein q is α Is the first value of the above-mentioned score,
for each OAR (radiotherapy-at-risk organ) weight, i denotes the number of OARs.
Is a constant related to the total volume of the OAR,
the volume value (in pixel basis) illuminated by the current field is calculated for each OAR.
When radiotherapy is performed, the radiotherapy organs-at-risk may include a plurality of organs, and the influence of different radiotherapy organs-at-risk on the human body is also greatly different, so that it is said that setting a different weight value for each OAR (radiotherapy organ-at-risk) helps to reduce the influence of radiation on the human body.
In an alternative embodiment, the first scoring value of the portal corresponding to each angle may also be calculated by using the following formula:
wherein, V i OAR All volumes (in pixels as basic units) for each OAR.
The total irradiation volume of each OAR is obtained through calculation, then the total volume of each OAR is divided by the total volume of the OARs, the volume ratio of each OAR under the angle is obtained, then the weighted value determined by the importance degree of the OAR is multiplied by the volume ratio of each OAR, the score of each OAR is obtained, the low score indicates that the volume irradiated by each OAR under the irradiation of the angle is the minimum after the important program sequencing of the OAR by a user is considered. Therefore, the portal corresponding to the angle can be used as a recommended portal, and finally, the target portal information of the target object is determined according to the first to-be-recommended portal.
In summary, by calculating the volume value of the radiation field irradiated to the radiotherapy organs at each angle, the influence degree of the radiation field at each angle on the radiotherapy organs is fully considered, then the radiation field at each angle is scored according to the volume value, the final target radiation field information is determined according to the scoring of the radiation field at each angle, the radiation field at each angle can be more reasonably evaluated according to the volume value, in addition, in the using process, only all angle spaces need to be traversed, scoring calculation can be carried out on each angle, time-consuming iterative optimization is not needed, and therefore, the radiation field determining efficiency is effectively improved.
In order to improve the accuracy of calculating the first volume value, in the method for recommending radiation field information provided in the embodiment of the present application, calculating the first volume value of the radiotherapy organs-at-risk irradiated by the radiation at each angle in the multi-layered target medical image includes: calculating the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image; and calculating to obtain a plurality of first volume values according to the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image.
Specifically, the calculation of the first volume value may be simplified by first calculating an area value of the radiotherapy organs-at-risk irradiated with radiation at each angle in each layer of the target medical image, and then obtaining the first volume value of the radiotherapy organs-at-risk irradiated with radiation at each angle in the multi-layer target medical image by superimposing the area values of each layer.
The irradiation area of each layer of the target medical image is determined by radiating rays to both sides of the PTV from a point 1000mm away from the center point (i.e., the predetermined position) in the angular direction, and after the total irradiation area is obtained, the irradiation area of each OAR can be extracted from the total irradiation area, and the total irradiation volume of each OAR can be obtained by adding up each layer.
Through the above steps, the first volume value of the radiotherapy organs-at-risk irradiated by the rays at each angle can be quickly and accurately obtained.
In order to improve the score value of calculating the first volume value, in the method for recommending portal information provided in the embodiment of the present application, the portal scoring is performed on the portal corresponding to the ray at each angle according to each first volume value, and obtaining a plurality of first score values includes: calculating the total volume value of the radiotherapy organs at risk in each layer of target medical image to obtain a plurality of second volume values; and setting a weight value of each radiotherapy organs at risk, and performing field grading on the field corresponding to the ray at each angle according to the weight value, the first volume value and the second volume value to obtain a plurality of first grading values.
Specifically, in an alternative embodiment, the following formula may be used to calculate the first score value of the field corresponding to each angle:
wherein, V i OAR For all volumes (in pixel basis) of each OAR, correspond
The total irradiation volume of each OAR (i.e. the first volume value) is calculated, and then divided by the total volume of the OAR (i.e. the second volume value), so that the volume ratio of each OAR at the angle is obtained, and then multiplied by a weight value determined by the importance degree of the OAR, so that the score value of each OAR, i.e. the first score value, is obtained.
The score value is calculated through the steps, and the basic idea of radiotherapy radiation field selection is completely met, namely the irradiation of each OAR is reduced as far as possible under the condition that the sufficient irradiation of the PTV is ensured.
How to obtain the target portal information according to the first portal to be recommended is crucial, and therefore, in the method for recommending portal information provided in the embodiment of the present application, determining the target portal information of the target object according to the first portal to be recommended includes: determining the number of first to-be-recommended shots; and if the number of the first fields to be recommended is equal to the preset number of the target fields, determining the target field information of the target object according to the first fields to be recommended.
If the number of the first to-be-recommended shots is not equal to the preset target shot number, determining a first angle of the first to-be-recommended shots; carrying out shot grading again on the shots corresponding to the angles except the first angle to obtain a plurality of second grading values; taking the portal corresponding to the minimum second score value as a second portal to be recommended, and determining the number of the current portals to be recommended; and if the number of the current to-be-recommended fields is equal to the preset number of the target fields, determining the target field information of the target object according to the first to-be-recommended field and the second to-be-recommended field.
Specifically, because there is a difference in the number of fields for cancer cells of different organs, the preset target number of fields is set according to the multi-layered target medical image of the target object. For example, the number of fields for cervical cancer is generally 7-9 fields, the number of fields for gastric cancer is generally 6-8 fields, and the number of fields for nasopharyngeal cancer is generally 9 fields.
After the first to-be-recommended portal is determined, whether the number of the first to-be-recommended portals is equal to the preset target portal number needs to be judged, and if the number of the first to-be-recommended portals is equal to the preset target portal number, the target portal information of the target object is directly determined according to the first to-be-recommended portals.
And if the number of the first to-be-recommended shots is not equal to the preset target shot number, performing shot scoring on the shots at the rest angles again to obtain the next to-be-recommended shot from the rest shots. That is to say, the portal scoring is performed again on the portals corresponding to a plurality of angles except the first angle, the portal corresponding to the minimum second scoring value is used as the second portal to be recommended, whether the number of the portals to be recommended currently is equal to the preset target portal number is judged again, and if the number of the portals to be recommended currently is equal to the preset target portal number, the target portal information of the target object is determined according to the first portal to be recommended and the second portal to be recommended.
In the method for recommending portal information provided in the embodiment of the present application, after determining the number of portals to be recommended currently, the method further includes: and if the number of the current to-be-recommended shots is not equal to the preset target shot number, determining a second angle of a second to-be-recommended shot, and repeatedly performing shot scoring on the shots corresponding to a plurality of angles except the first angle and the second angle until the number of the current to-be-recommended shots is equal to the preset target shot number, and determining target shot information of the target object according to the current to-be-recommended shots.
Specifically, after the second to-be-recommended portal is determined, if the number of the current to-be-recommended portals is not equal to the preset target portal number, portal scoring is continuously performed on the portals at the remaining angles until the number of the current to-be-recommended portals is equal to the preset target portal number, and target portal information of the target object is determined according to the current to-be-recommended portals.
In order to calculate the second score value more reasonably and accurately, in the method for recommending the portal information provided in the embodiment of the present application, the portal scoring is performed again on the portals corresponding to a plurality of angles other than the first angle, and obtaining the plurality of second score values includes: calculating cosine values between the first angle and a plurality of angles except the first angle to obtain a plurality of cosine values; and according to the plurality of cosine values and the plurality of first score values, carrying out the portal grading again on the plurality of portals corresponding to the angles except the first angle to obtain a plurality of second score values.
Specifically, when scoring the shots corresponding to angles other than the first angle, the distance between the angle to be selected and the selected angle cannot be too close, and therefore, cosine values between the first angle and a plurality of angles other than the first angle are calculated, by which the angle to be selected and the selected angle are constrained. And performing field scoring again on the fields corresponding to the angles except the first angle through the cosine values and the first score values to obtain second score values.
In an alternative embodiment, the second score value may be calculated using the following formula:
wherein TEI is a second score value,
the first score values, k, δ: the angle-constrained hyper-parameters can be adjusted and assigned, and are generally defaulted to 0.2; alpha is alpha tj Is the angle value between the angle corresponding to the t-th portal and the angle corresponding to the j-th portal.
The first item of the above formula is a first score value, the second item is a constraint between the angles, the condition that the angle to be selected is too close to the selected angle is prevented, cos () plays a constraint role, if the two angles are too close, the cos () value is too large, the denominator is reduced, the value of the integral formula is increased, and the integral formula is violated with a scoring rule, so that a certain angle distance from the selected angle can be screened out, and the radiation field of the OAR can be irradiated as little as possible.
In an optional embodiment, the flowchart shown in fig. 2 may be adopted to implement recommendation of portal information, specifically, traverse all angles, calculate the score of the portal, return to the lowest portal to be recommended, determine whether the portal number is satisfied, if so, end, and if not, repeat calculating the score of the portal until the portal number is satisfied. The algorithm has short calculation time, does not need time-consuming iterative optimization, and only needs to traverse the angle space and perform formula calculation on each angle, so that the effect of determining the field can be effectively improved.
According to the recommendation method of the radiation field information, a plurality of layers of target medical images of a target object are obtained, wherein the plurality of layers of target medical images at least comprise planned target area delineation information of the target object and delineation information of a radiotherapy endangered organ; emitting rays to a planned target area in the multilayer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy endangered organ irradiated by the rays at each angle in the multilayer target medical image; according to each first volume value, performing a portal grading on the portal corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the portal corresponding to the minimum first grading value as a first to-be-recommended portal; the target field information of the target object is determined according to the first field to be recommended, and the problem that the field determining efficiency is low due to the fact that the field is determined by means of manual experience in the related art is solved. In the scheme, the volume value of the radiation field irradiated to the radiotherapy organs at each angle is calculated, the influence degree of the radiation field at each angle on the radiotherapy organs at risk is fully considered, then the radiation field at each angle is scored through the volume value, the final target radiation field information is determined through the scoring of the radiation field at each angle, the radiation field at each angle can be reasonably evaluated through the volume value, all angle spaces only need to be traversed in the using process, scoring calculation can be carried out on each angle, time-consuming iterative optimization is not needed, and the effect of improving the efficiency of determining the radiation field is achieved.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a recommendation device for portal information, and it should be noted that the recommendation device for portal information in the embodiment of the present application can be used to execute the recommendation method for portal information provided in the embodiment of the present application. The following describes a portal information recommendation device provided in an embodiment of the present application.
Fig. 3 is a schematic diagram of a portal information recommendation device according to an embodiment of the present application. As shown in fig. 3, the apparatus includes: an acquisition unit 301, a calculation unit 302, a first scoring unit 303, and a first determination unit 304.
An obtaining unit 301, configured to obtain a multi-layer target medical image of a target object, where the multi-layer target medical image at least includes planned target area delineation information of the target object and delineation information of a radiotherapy risk organ;
a calculating unit 302, configured to emit a ray at each angle to a planned target area in the multi-layer target medical image at a preset position, and calculate a first volume value of a radiotherapy critical organ irradiated by the ray at each angle in the multi-layer target medical image;
the first scoring unit 303 is configured to perform a portal scoring on the portal corresponding to the ray at each angle according to each first volume value to obtain a plurality of first score values, and use the portal corresponding to the smallest first score value as the first portal to be recommended;
the first determining unit 304 is configured to determine target field information of the target object according to the first to-be-recommended field.
According to the recommendation device for the radiation field information, the acquisition unit 301 acquires multiple layers of target medical images of the target object, wherein the multiple layers of target medical images at least include planned target area delineation information of the target object and delineation information of a radiotherapy danger organ; the calculating unit 302 emits rays to the planned target area in the multilayer target medical image at each angle at the preset position, and calculates to obtain a first volume value of the radiotherapy organs at risk irradiated by the rays at each angle in the multilayer target medical image; the first scoring unit 303 performs a portal scoring on the portal corresponding to the ray at each angle according to each first volume value to obtain a plurality of first score values, and takes the portal corresponding to the smallest first score value as a first to-be-recommended portal; the first determining unit 304 determines the target field information of the target object according to the first to-be-recommended field, and solves the problem that the field determining efficiency is low due to the fact that the field determining is performed by means of manual experience in the related art. In the scheme, the volume value of the radiation field irradiated to the radiotherapy organs at each angle is calculated, the influence degree of the radiation field at each angle on the radiotherapy organs at risk is fully considered, then the radiation field at each angle is scored through the volume value, the final target radiation field information is determined through the scoring of the radiation field at each angle, the radiation field at each angle can be more reasonably evaluated through the volume value, in the using process, only all angle spaces need to be traversed, scoring calculation can be performed on each angle, time-consuming iterative optimization is not needed, and the effect of improving the efficiency of determining the radiation field is achieved.
Optionally, in the device for recommending portal information provided in the embodiment of the present application, the calculating unit includes: the first calculation module is used for calculating the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image; and the second calculation module is used for calculating a plurality of first volume values according to the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image.
Optionally, in the recommendation apparatus for portal information provided in this embodiment of the present application, the first scoring unit includes: the third calculation module is used for calculating the total volume value of the radiotherapy organs at risk in each layer of target medical image to obtain a plurality of second volume values; and the setting module is used for setting the weight value of each radiotherapy endangered organ, and performing field grading on the field corresponding to the ray at each angle according to the weight value, the first volume value and the second volume value to obtain a plurality of first grading values.
Optionally, in the device for recommending portal information provided in an embodiment of the present application, the first determining unit includes: the first determining module is used for determining the number of the first to-be-recommended shots; and the second determining module is used for determining the target field information of the target object according to the first to-be-recommended field if the number of the first to-be-recommended fields is equal to the preset target field number.
Optionally, in the device for recommending portal information provided in an embodiment of the present application, the device further includes: the second determining unit is used for determining a first angle of the first to-be-recommended portal if the number of the first to-be-recommended portals is not equal to the preset target portal number after the number of the first to-be-recommended portals is determined; the second scoring unit is used for scoring the shooting fields corresponding to the angles except the first angle again to obtain a plurality of second scoring values; the third determining unit is used for taking the portal corresponding to the minimum second score value as a second portal to be recommended and determining the number of the portals to be recommended currently; and the fourth determining unit is used for determining the target field information of the target object according to the first to-be-recommended field and the second to-be-recommended field if the number of the current to-be-recommended fields is equal to the preset target field number.
Optionally, in the device for recommending portal information provided in an embodiment of the present application, the device further includes: and the execution unit is used for determining a second angle of a second to-be-recommended portal if the number of the current to-be-recommended portals is not equal to the preset target portal number after the number of the current to-be-recommended portals is determined, and repeatedly performing portal grading on a plurality of portals corresponding to the angles except the first angle and the second angle until the number of the current to-be-recommended portals is equal to the preset target portal number, and determining target portal information of the target object according to the current to-be-recommended portals.
Optionally, in the apparatus for recommending portal information provided in this embodiment of the present application, the second scoring unit includes: the fourth calculation module is used for calculating cosine values between the first angle and a plurality of angles except the first angle to obtain a plurality of cosine values; and the scoring module is used for scoring the shooting fields corresponding to the angles except the first angle again according to the cosine values and the first score values to obtain second score values.
The recommendation device for the portal information comprises a processor and a memory, wherein the acquisition unit 301, the calculation unit 302, the first scoring unit 303, the first determination unit 304 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more kernels can be set, and the recommendation of the portal information is realized by adjusting kernel parameters.
The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), including at least one memory chip.
The embodiment of the invention provides a processor, which is used for running a program, wherein a recommendation method of portal information is executed when the program runs.
As shown in fig. 4, an embodiment of the present invention provides an electronic device, where the device includes a processor, a memory, and a program stored in the memory and executable on the processor, and the processor implements the following steps when executing the program: acquiring a multilayer target medical image of a target object, wherein the multilayer target medical image at least comprises planned target area delineation information of the target object and delineation information of a radiotherapy organs-at-risk; emitting rays to a planned target area in the multilayer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy organs-at-risk irradiated by the rays at each angle in the multilayer target medical image; according to each first volume value, carrying out field grading on the field corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the field corresponding to the minimum first grading value as a first to-be-recommended field; and determining target field information of the target object according to the first to-be-recommended field.
Optionally, the calculating a first volume value of the radiotherapy organs-at-risk irradiated by the radiation at each angle in the multi-layered target medical image comprises: calculating the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image; and calculating to obtain a plurality of first volume values according to the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image.
Optionally, according to each first volume value, performing a portal scoring on the portal corresponding to the ray at each angle, and obtaining a plurality of first scoring values includes: calculating the total volume value of the radiotherapy organs at risk in each layer of target medical image to obtain a plurality of second volume values; and setting a weight value of each radiotherapy organs at risk, and performing field grading on the field corresponding to the ray at each angle according to the weight value, the first volume value and the second volume value to obtain a plurality of first grading values.
Optionally, determining the target field information of the target object according to the first to-be-recommended field includes: determining the number of first to-be-recommended shots; and if the number of the first fields to be recommended is equal to the preset number of the target fields, determining the target field information of the target object according to the first fields to be recommended.
Optionally, after determining the number of the first to-be-recommended shots, the method further includes: if the number of the first to-be-recommended fields is not equal to the preset target field number, determining a first angle of the first to-be-recommended fields; carrying out shot grading again on the shots corresponding to the angles except the first angle to obtain a plurality of second grading values; taking the portal corresponding to the minimum second score value as a second portal to be recommended, and determining the number of the current portals to be recommended; and if the number of the current to-be-recommended fields is equal to the preset number of the target fields, determining the target field information of the target object according to the first to-be-recommended field and the second to-be-recommended field.
Optionally, after determining the number of the current to-be-recommended shots, the method further includes: and if the number of the current to-be-recommended fields is not equal to the preset target field number, determining a second angle of a second to-be-recommended field, and repeatedly performing field grading on a plurality of fields corresponding to the angles except the first angle and the second angle again until the number of the current to-be-recommended fields is equal to the preset target field number, and determining target field information of the target object according to the current to-be-recommended fields.
Optionally, the performing the portal scoring again on the portals corresponding to the plurality of angles except the first angle, and obtaining a plurality of second score values includes: calculating cosine values between the first angle and a plurality of angles except the first angle to obtain a plurality of cosine values; and according to the plurality of cosine values and the plurality of first score values, carrying out the portal grading again on the plurality of portals corresponding to the angles except the first angle to obtain a plurality of second score values.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: acquiring a multilayer target medical image of a target object, wherein the multilayer target medical image at least comprises planned target area delineation information of the target object and delineation information of a radiotherapy organs-at-risk; emitting rays to a planned target area in the multilayer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy endangered organ irradiated by the rays at each angle in the multilayer target medical image; according to each first volume value, performing a portal grading on the portal corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the portal corresponding to the minimum first grading value as a first to-be-recommended portal; and determining target field information of the target object according to the first to-be-recommended field.
Optionally, the calculating a first volume value of the radiotherapy organs-at-risk irradiated by the radiation at each angle in the multi-layered target medical image comprises: calculating the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image; and calculating to obtain a plurality of first volume values according to the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image.
Optionally, according to each first volume value, performing a portal scoring on the portal corresponding to the ray at each angle, and obtaining a plurality of first scoring values includes: calculating the total volume value of the radiotherapy organs at risk in each layer of target medical image to obtain a plurality of second volume values; and setting a weight value of each radiotherapy organs at risk, and performing field grading on the field corresponding to the ray at each angle according to the weight value, the first volume value and the second volume value to obtain a plurality of first grading values.
Optionally, determining the target field information of the target object according to the first to-be-recommended field includes: determining the number of first to-be-recommended shots; and if the number of the first fields to be recommended is equal to the preset number of the target fields, determining the target field information of the target object according to the first fields to be recommended.
Optionally, after determining the number of the first to-be-recommended shots, the method further includes: if the number of the first to-be-recommended fields is not equal to the preset target field number, determining a first angle of the first to-be-recommended fields; performing field grading again on the fields corresponding to the angles except the first angle to obtain a plurality of second grading values; taking the portal corresponding to the minimum second score value as a second portal to be recommended, and determining the number of the current portals to be recommended; and if the number of the current fields to be recommended is equal to the preset number of the target fields, determining the target field information of the target object according to the first field to be recommended and the second field to be recommended.
Optionally, after determining the number of the current to-be-recommended shots, the method further includes: and if the number of the current to-be-recommended shots is not equal to the preset target shot number, determining a second angle of a second to-be-recommended shot, and repeatedly performing shot scoring on the shots corresponding to a plurality of angles except the first angle and the second angle until the number of the current to-be-recommended shots is equal to the preset target shot number, and determining target shot information of the target object according to the current to-be-recommended shots.
Optionally, the performing the portal scoring again on the portals corresponding to the plurality of angles except the first angle, and obtaining a plurality of second score values includes: calculating cosine values between the first angle and a plurality of angles except the first angle to obtain a plurality of cosine values; and according to the cosine values and the first score values, performing field scoring again on the fields corresponding to the angles except the first angle to obtain second score values.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A recommendation method of portal information is characterized by comprising the following steps:
acquiring a multi-layer target medical image of a target object, wherein the multi-layer target medical image at least comprises planned target area delineation information of the target object and delineation information of a radiotherapy danger organ;
emitting rays to a planned target area in the multi-layer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy endangered organ irradiated by the rays at each angle in the multi-layer target medical image;
according to each first volume value, performing a portal grading on the portal corresponding to the ray at each angle to obtain a plurality of first grading values, and taking the portal corresponding to the minimum first grading value as a first to-be-recommended portal;
and determining the target field information of the target object according to the first to-be-recommended field.
2. The method of claim 1, wherein calculating a first volume value for a radiation therapy risk organ at each angle in the multi-layered target medical image comprises:
calculating the area value of the radiotherapy organs at risk irradiated by the rays under each angle in each layer of target medical image;
and calculating to obtain a plurality of first volume values according to the area value of the radiotherapy organs-at-risk irradiated by the rays under each angle in each layer of target medical image.
3. The method of claim 1, wherein performing a portal score on the portal corresponding to the ray at each angle according to each first volume value, and obtaining a plurality of first score values comprises:
calculating the total volume value of the radiotherapy organs at risk in each layer of target medical image to obtain a plurality of second volume values;
and setting a weight value of each radiotherapy organs at risk, and carrying out portal grading on the portal corresponding to the ray at each angle according to the weight value, the first volume value and the second volume value to obtain a plurality of first grading values.
4. The method of claim 1, wherein determining the target field information of the target object according to the first to-be-recommended field comprises:
determining the number of the first to-be-recommended shots;
and if the number of the first to-be-recommended fields is equal to the number of preset target fields, determining target field information of the target object according to the first to-be-recommended fields.
5. The method of claim 4, wherein after determining the number of first to-be-recommended shots, the method further comprises:
if the number of the first to-be-recommended fields is not equal to the number of the preset target fields, determining a first angle of the first to-be-recommended fields;
performing field grading again on the fields corresponding to the angles except the first angle to obtain a plurality of second grading values;
taking the portal corresponding to the minimum second score value as a second portal to be recommended, and determining the number of the current portals to be recommended;
and if the number of the current fields to be recommended is equal to the preset number of the target fields, determining the target field information of the target object according to the first field to be recommended and the second field to be recommended.
6. The method of claim 5, wherein after determining the number of shots to be recommended currently, the method further comprises:
if the number of the current to-be-recommended shots is not equal to the preset target shot number, determining a second angle of the second to-be-recommended shots, and repeatedly performing the shot grading on the shots corresponding to a plurality of angles except the first angle and the second angle again until the number of the current to-be-recommended shots is equal to the preset target shot number, and determining target shot information of the target object according to the current to-be-recommended shots.
7. The method of claim 5, wherein scoring the plurality of shots corresponding to the angles other than the first angle again comprises:
calculating cosine values between the first angle and a plurality of angles except the first angle to obtain a plurality of cosine values;
and according to the cosine values and the first score values, carrying out the portal grading again on the portals corresponding to the angles except the first angle to obtain second score values.
8. A recommendation device for portal information, comprising:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a plurality of layers of target medical images of a target object, and the plurality of layers of target medical images at least comprise planned target area delineation information of the target object and delineation information of a radiotherapy danger organ;
the calculation unit is used for emitting rays to a planned target area in the multilayer target medical image at each angle at a preset position, and calculating to obtain a first volume value of a radiotherapy endangered organ irradiated by the rays at each angle in the multilayer target medical image;
the first scoring unit is used for scoring the radiation field corresponding to the ray at each angle according to each first volume value to obtain a plurality of first score values, and taking the radiation field corresponding to the minimum first score value as a first to-be-recommended radiation field;
and the first determining unit is used for determining the target field information of the target object according to the first to-be-recommended field.
9. A processor, characterized in that the processor is configured to execute a program, wherein the program executes the method for recommending portal information according to any one of claims 1 to 7.
10. An electronic device comprising one or more processors and memory for storing one or more programs, wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method for recommending shot information of any of claims 1 to 7.
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| CN117717723A (en) * | 2024-02-08 | 2024-03-19 | 福建自贸试验区厦门片区Manteia数据科技有限公司 | Portal information determining device, processor and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117717723A (en) * | 2024-02-08 | 2024-03-19 | 福建自贸试验区厦门片区Manteia数据科技有限公司 | Portal information determining device, processor and electronic equipment |
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