CN112473022A - Verification method and device of positioning information and computer equipment - Google Patents
Verification method and device of positioning information and computer equipment Download PDFInfo
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Abstract
The application discloses a method and a device for verifying positioning information and computer equipment, relates to the technical field of medical treatment, and can solve the problem of low accuracy when the positioning information is verified. The method comprises the following steps: acquiring a positioning picture and a current positioning picture of a target patient; calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance; comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient; and outputting the position information verification result. The method and the device are suitable for effectively verifying the positioning information in the radiotherapy plan.
Description
Technical Field
The application relates to the technical field of medical treatment, in particular to a positioning verification method, a positioning verification device and computer equipment.
Background
Cancer therapies mainly include surgery, radiotherapy, chemotherapy, and the like, and among many therapies, radiotherapy plays a crucial role. The 2014 world cancer report data shows that, depending on the stage and type of tumor, generally, about 50% -65% of tumor patients need to receive radiation therapy. Related reports in China show that: inaccurate positioning during radiotherapy can lead to the greatly increased recurrence rate of radiotherapy patients. Because the times and the cycles of radiotherapy are large, the related factors are numerous, the positioning precision is difficult to ensure, and the tumor is under-irradiated or over-irradiated, which may become a significant cause of tumor recurrence and death of radiotherapy patients.
A currently common method is to use a laser light to indicate isocenter. On one hand, the isocenter indicated by the laser lamp is bound to have errors; on the other hand, the mechanical precision of the laser lamp is very dependent, and a very small angle deviation of the laser lamp can cause the cross line to generate geometric series amplified displacement deviation at the isocenter, so that the positioning can not meet the precision requirement.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for verifying positioning information, and a computer device, which mainly solve the problem of low accuracy when verifying positioning information.
According to an aspect of the present application, there is provided a method for verifying seating information, the method including:
acquiring a positioning picture and a current positioning picture of a target patient;
calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance;
comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient;
and outputting the position information verification result.
Preferably, the calculating a coordinate distance between the same pixel points corresponding to the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance specifically includes:
extracting each first pixel point on the corresponding organization edge of the positioning picture and each second pixel point on the corresponding organization edge of the current positioning picture;
pairing a first pixel point and a second pixel point which correspond to the same pixel;
calculating the coordinate distance between the successfully matched first pixel point and the second pixel point based on the first coordinate position of the first pixel point and the second coordinate position of the second pixel point;
calculating an average of each of the coordinate distances and determining the average as a setup error for the target patient.
Preferably, comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient, specifically comprising:
acquiring a preset tolerance range corresponding to a patient positioning treatment project;
if the positioning error is judged to be beyond the preset tolerance range, judging that the current positioning information of the target patient is not verified;
and if the positioning error is judged not to exceed the preset tolerance range, judging that the current positioning information of the target patient passes verification.
Preferably, after determining that the current positioning information of the target patient is not verified, the method specifically further includes:
and determining an adjustment strategy corresponding to the current positioning position according to the first coordinate position and the second coordinate position.
Preferably, determining an adjustment strategy corresponding to the current positioning position according to the first coordinate position and the second coordinate position specifically includes:
taking the first coordinate position as the second coordinate position moving reference to obtain the target moving direction of each pixel point in the current positioning picture;
and integrating the moving direction of the target to obtain an adjustment strategy of the corresponding positioning position.
Preferably, the outputting the verification result of the positioning information specifically includes:
outputting first prompt information that the current position of the target patient fails to pass the verification, wherein the first prompt information comprises the adjustment strategy so as to prompt that the current position of the target patient is adjusted according to the adjustment strategy, so that the position error corresponding to the current position is within the preset tolerance range.
Preferably, if it is determined that the current positioning information of the target patient passes the verification, the outputting the positioning information verification result specifically includes:
and outputting second prompt information that the current positioning information of the target patient passes the verification.
According to another aspect of the present application, there is provided a verification apparatus of seating information, the apparatus including:
the acquisition module is used for acquiring a positioning picture and a current positioning picture of a target patient;
the calculation module is used for calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture and determining the positioning error of the target patient based on the coordinate distance;
the comparison module is used for comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient;
and the output module is used for outputting the positioning information verification result.
Preferably, the calculation module is specifically configured to:
extracting each first pixel point on the corresponding organization edge of the positioning picture and each second pixel point on the corresponding organization edge of the current positioning picture;
pairing a first pixel point and a second pixel point which correspond to the same pixel;
calculating the coordinate distance between the successfully matched first pixel point and the second pixel point based on the first coordinate position of the first pixel point and the second coordinate position of the second pixel point;
calculating an average of each of the coordinate distances and determining the average as a setup error for the target patient.
Preferably, the comparison module is specifically configured to:
acquiring a preset tolerance range corresponding to a patient positioning treatment project;
if the positioning error is judged to be beyond the preset tolerance range, judging that the current positioning information of the target patient is not verified;
and if the positioning error is judged not to exceed the preset tolerance range, judging that the current positioning information of the target patient passes verification.
Preferably, after determining that the current setup information of the target patient is not verified, the apparatus further comprises: a determination module;
the determining module is used for determining an adjusting strategy corresponding to the current positioning position according to the first coordinate position and the second coordinate position.
Preferably, the determining module is specifically configured to:
taking the first coordinate position as the second coordinate position moving reference to obtain the target moving direction of each pixel point in the current positioning picture;
and integrating the moving direction of the target to obtain an adjustment strategy of the corresponding positioning position.
Preferably, the output module is specifically configured to:
outputting first prompt information that the current position of the target patient fails to pass the verification, wherein the first prompt information comprises the adjustment strategy so as to prompt that the current position of the target patient is adjusted according to the adjustment strategy, so that the position error corresponding to the current position is within the preset tolerance range.
Preferably, if it is determined that the current positioning information of the target patient passes the verification, the output module is further configured to output the positioning information verification result, and specifically:
and outputting second prompt information that the current positioning information of the target patient passes the verification.
According to yet another aspect of the present application, there is provided a non-transitory readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described method of verifying seating information.
According to still another aspect of the present application, there is provided a computer device including a nonvolatile readable storage medium, a processor, and a computer program stored on the nonvolatile readable storage medium and executable on the processor, the processor implementing the method for verifying the positioning information when executing the program.
By means of the technical scheme, the positioning verification method, the positioning verification device and the computer equipment can firstly obtain a positioning picture and a current positioning picture of a target patient, and determine the positioning error of the target patient for current positioning information by calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture. And further comparing the positioning error with a preset tolerance range to obtain a verification result of the positioning information corresponding to the target patient. Through the technical scheme in the application, the positioning error of the current positioning information can be calculated more intelligently, so that the positioning verification process is more accurate and reliable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application to the disclosed embodiment. In the drawings:
fig. 1 is a schematic flowchart illustrating a method for verifying positioning information according to an embodiment of the present application;
fig. 2 is a schematic flowchart illustrating another verification method for positioning information according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram illustrating a verification apparatus for positioning information according to an embodiment of the present application;
fig. 4 is a schematic structural diagram illustrating another verification apparatus for positioning information according to an embodiment of the present application;
fig. 5 shows a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Aiming at the problem that the accuracy is low when the positioning information is verified at present, an embodiment of the present application provides a method for verifying the positioning information, as shown in fig. 1, the method includes:
101. and acquiring a positioning picture and a current positioning picture of the target patient.
In a specific application scenario, the target patient positioning image is mainly obtained by a simulated positioning scan, which is a scan performed before the treatment process. The function of acquiring the positioning picture is used for acquiring images before treatment, simulating positioning and verifying position information.
102. And calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance.
For this embodiment, in a specific application scenario, in addition to a mode of determining a positioning error by manually identifying pixel points at the same positions corresponding to the positioning picture and the current positioning picture, the present disclosure also provides a method for automatically calculating a positioning error, that is, a coordinate distance between the positioning picture and the same pixel points corresponding to the current positioning picture can be calculated, and a positioning error of a target patient can be determined based on the coordinate distance.
103. And comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient.
The preset tolerance range is used for limiting whether the current positioning has an unallowable large deviation, and if the large deviation occurs, normal cells can be killed, so that medical accidents are caused. The position information verification result can comprise a failed verification and a passed verification, and when the position error exceeds a preset tolerance range, the position information verification result correspondingly fails the verification; otherwise, when the positioning error does not exceed the preset tolerance range, the positioning information verification result correspondingly passes the verification.
104. And outputting a positioning information verification result.
In a specific application scenario, when a positioning information verification result is output, the method can be realized by outputting prompt information or sending a push message to related workers, so that the workers are prompted to start subsequent operations in time.
According to the verification method of the positioning information in the embodiment, the positioning picture and the current positioning picture of the target patient can be obtained firstly, and the positioning error of the target patient for the current positioning information is determined by calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture. And further comparing the positioning error with a preset tolerance range to obtain a verification result of the positioning information corresponding to the target patient. Through the technical scheme in the application, the positioning error of the current positioning information can be calculated more intelligently, so that the positioning verification process is more accurate and reliable.
Further, as a refinement and an extension of the specific implementation of the foregoing embodiment, in order to fully describe the specific implementation process in this embodiment, another method for verifying the positioning information is provided, as shown in fig. 2, where the method includes:
201. and acquiring a positioning picture and a current positioning picture of the target patient.
In a specific application scenario, before the target area is outlined, a positioning picture of a target patient should be acquired first to serve as a verification reference for current positioning information. The positioning picture can be obtained by simulating positioning scanning through a simulated positioning machine, and the simulated positioning machine comprises but is not limited to: x-ray analog positioning machine (X-sim), CT analog positioning machine (CT-sim), MR analog positioning machine (MR-sim), even PET-CT/PET-MR analog positioning (PET-CT/MR-sim). The current positioning picture can be realized through the positioning image equipment, and the current positioning information of the target patient is collected through the positioning image equipment, so that the current positioning picture is generated and uploaded.
202. And extracting each first pixel point on the corresponding organization edge of the positioning picture and each second pixel point on the corresponding organization edge of the current positioning picture.
For this embodiment, in a specific application scenario, in order to implement texture comparison of two images, pixel point information on tissue edges of the two images may be collected first, where the pixel point information may include corresponding coordinate positions and assigned color values.
203. Pairing the first pixel point and the second pixel point corresponding to the same pixel in pairs.
Correspondingly, because the pixels of the same tissue part in the two pictures are correspondingly the same, the pixels corresponding to the same color value in the two pictures can be paired and combined pairwise, so that the pixel error of the two pictures can be determined by calculating the similarity before each pairing and combination.
204. And calculating the coordinate distance between the successfully matched first pixel point and the second pixel point based on the first coordinate position of the first pixel point and the second coordinate position of the second pixel point.
In a specific application scenario, the coordinate Distance between the first pixel point and the second pixel point may be calculated by using an existing Distance calculation formula such as an Euclidean Distance (Euclidean Distance), a manhattan Distance, a chebyshev Distance, and the like, where the calculation formula may be:
wherein (x)A,xB) Is the first coordinate position of the first pixel point, (y)A,yB) Is the second coordinate position of the second pixel point.
205. Calculating the average value of the coordinate distances, and determining the average value as the positioning error of the target patient.
In a specific application scenario, after coordinate distances of two same pixel points in each pairing combination are obtained through calculation, the average value can be determined as the positioning error of a target patient by calculating the average value of each coordinate distance. In addition, corresponding weighted weights can be configured for all the pixel points in advance, and finally the weighted average is determined as the positioning error of the target patient by calculating the weighted average of all the coordinate distances.
206. And acquiring a preset tolerance range corresponding to the patient positioning treatment item.
For this embodiment, since the present application can support connection of a plurality of positioning image model devices and is suitable for verification of different positioning treatment items, different positioning image model devices and different positioning treatment items often correspond to different preset tolerance ranges, after the positioning error is calculated, the preset tolerance ranges corresponding to the current positioning image model devices and the positioning treatment items should be first screened out, and the positioning information verification result of the target patient is obtained by comparing the positioning error with the preset tolerance ranges.
207a, if the positioning error is judged to be beyond the preset tolerance range, judging that the current positioning information of the target patient is not verified.
For example, the preset tolerance range is less than or equal to 3mm, if the positioning error is calculated to be 4mm, the positioning error exceeds the preset tolerance range, that is, an unallowable large deviation occurs, and a medical accident is caused because a large deviation occurs, normal cells are killed, so that it can be determined that the current positioning information of the target patient is not verified, and then the current radiotherapy plan is stopped being executed.
208a, determining an adjusting strategy corresponding to the current positioning position according to the first coordinate position and the second coordinate position.
For the present embodiment, in a specific application scenario, the embodiment step 208a may specifically include: taking the first coordinate position as a second coordinate position moving reference, and acquiring the target moving direction of each pixel point in the current positioning picture; and integrating the moving direction of the target to obtain an adjustment strategy of the corresponding positioning position. Specifically, the positioning picture can be used as a moving reference, the moving strategy of the target patient is calculated by integrating the moving direction and the moving distance of each pixel point in the current positioning picture, and the positioning error after moving can be within a preset tolerance range through the moving strategy.
209a, outputting first prompt information that the current position of the target patient fails to pass the verification, wherein the first prompt information comprises an adjustment strategy so as to prompt that the current position of the target patient is adjusted according to the adjustment strategy, so that the position error corresponding to the current position is within a preset tolerance range.
The first prompt information can comprise one or more of text prompt information, picture prompt information, audio prompt information, video prompt information, light prompt information, vibration prompt information and other prompt information and is used for prompting a physicist or doctor that the formulated radiotherapy plan is not verified.
For example, the adjustment policy included in the first prompt message is: correspondingly moving the current positioning position upwards by 4mm, keeping the position of the target patient still based on the original position of the target patient, and moving the positioning imaging equipment downwards by 4 mm; or keeping the positioning imaging equipment still, and enabling the target patient to move upwards by 4mm, and further controlling the positioning error between the moved positioning picture and the positioning picture within a preset tolerance range.
In an embodiment step 207b, which is parallel to the embodiment step 207a, if it is determined that the positioning error does not exceed the preset tolerance range, it is determined that the current positioning information of the target patient passes the verification.
For example, the preset tolerance range is less than or equal to 3mm, and if the calculated positioning error is 3mm, the positioning error does not exceed the preset tolerance range, so that the current positioning information of the target patient can be determined to pass the verification.
208b, outputting a second prompt message that the current positioning information of the target patient passes the verification.
The second prompt information can comprise one or more of text prompt information, picture prompt information, audio prompt information, video prompt information, light prompt information, vibration prompt information and other prompt information and is used for prompting a physicist or doctor that the formulated radiotherapy plan passes verification. In a specific application scenario, in order to distinguish the first prompt message from the second prompt message, the second prompt message may be set to be different from the first prompt message.
According to the verification method of the positioning information, the positioning picture and the current positioning picture of the target patient can be obtained firstly, and the positioning error of the target patient aiming at the current positioning information is determined by calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture. And further comparing the positioning error with a preset tolerance range to obtain a verification result of the positioning information corresponding to the target patient. Through the technical scheme in the application, the positioning error of the current positioning information can be calculated more intelligently, so that the positioning verification process is more accurate and reliable. And when the positioning information is judged not to pass the standardization verification, an adjustment strategy corresponding to the current positioning position can be further formulated so as to prompt that the current positioning position of the target patient is quickly and accurately adjusted according to the adjustment strategy, so that the current positioning position meets the corresponding radiotherapy positioning standard, and the efficiency of radiotherapy is improved.
Further, as a specific implementation of the method shown in fig. 1 and fig. 2, an embodiment of the present application provides a device for verifying positioning information, as shown in fig. 3, the device includes: the device comprises an acquisition module 31, a calculation module 32, a comparison module 33 and an output module 34;
an obtaining module 31, configured to obtain a positioning picture and a current positioning picture of a target patient;
the calculation module 32 is used for calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance;
the comparison module 33 is used for comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient;
and the output module 34 is used for outputting the positioning information verification result.
In a specific application scenario, in order to determine a positioning error of a target patient, the calculation module 32 may be specifically configured to extract each first pixel point on a tissue edge corresponding to a positioning picture and each second pixel point on a tissue edge corresponding to a current positioning picture; pairing a first pixel point and a second pixel point which correspond to the same pixel; calculating the coordinate distance between the successfully matched first pixel point and the second pixel point based on the first coordinate position of the first pixel point and the second coordinate position of the second pixel point; calculating the average value of the coordinate distances, and determining the average value as the positioning error of the target patient.
Correspondingly, in order to obtain the verification result of the positioning information of the target patient, the comparison module 33 may be specifically configured to obtain a preset tolerance range corresponding to the patient positioning treatment item; if the positioning error is judged to be beyond the preset tolerance range, judging that the current positioning information of the target patient is not verified; and if the positioning error does not exceed the preset tolerance range, judging that the current positioning information of the target patient passes verification.
In a specific application scenario, in order to make an adjustment strategy for a current positioning position when current positioning information of a target patient is not verified, as shown in fig. 4, the apparatus further includes: a determination module 35;
and the determining module can be used for determining an adjusting strategy corresponding to the current positioning position according to the first coordinate position and the second coordinate position.
Correspondingly, the determining module is specifically configured to use the first coordinate position as a second coordinate position movement reference to obtain a target movement direction of each pixel point in the current positioning picture; and integrating the moving direction of the target to obtain an adjustment strategy of the corresponding positioning position.
In a specific application scenario, when the current positioning information of the target patient fails to be verified, the output module 34 may be specifically configured to output first prompt information that the current positioning position of the target patient fails to be verified, where the first prompt information includes an adjustment policy, so as to prompt that the current positioning position of the target patient is adjusted according to the adjustment policy, so that the positioning error corresponding to the current positioning position is within a preset tolerance range.
Correspondingly, when the current positioning information of the target patient passes the verification, the output module 34 may be specifically configured to output a second prompt message that the current positioning information of the target patient passes the verification.
It should be noted that other corresponding descriptions of the functional units related to the verification apparatus for positioning information provided in the embodiment of the present invention may refer to the corresponding description in fig. 1, and are not repeated herein.
Based on the method shown in fig. 1, correspondingly, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following steps: acquiring a positioning picture and a current positioning picture of a target patient; calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance; comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient; and outputting a positioning information verification result.
Based on the above embodiments of the method shown in fig. 1 and the apparatus shown in fig. 3, the embodiment of the present invention further provides a computer device, as shown in fig. 5, including a processor (processor)41, a communication Interface (communication Interface)42, a memory (memory)43, and a communication bus 44. Wherein: the processor 41, the communication interface 42, and the memory 43 communicate with each other via a communication bus 44. A communication interface 44 for communicating with network elements of other devices, such as clients or other servers. The processor 41 is configured to execute a program, and may specifically execute relevant steps in the above verification method for the positioning information. In particular, the program may include program code comprising computer operating instructions. The processor 41 may be a central processing unit CPU or a Specific Integrated circuit asic (application Specific Integrated circuit) or one or more Integrated circuits configured to implement an embodiment of the invention.
The terminal comprises one or more processors, which can be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs. And a memory 43 for storing a program. The memory 43 may comprise a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The program may specifically be adapted to cause the processor 41 to perform the following operations: acquiring a positioning picture and a current positioning picture of a target patient; calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance; comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient; and outputting a positioning information verification result.
According to the verification method, the verification device and the computer equipment of the positioning information, provided by the embodiment of the invention, the positioning picture and the current positioning picture of the target patient can be obtained firstly, and the positioning error of the target patient for the current positioning information is determined by calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture. And further comparing the positioning error with a preset tolerance range to obtain a verification result of the positioning information corresponding to the target patient. Through the technical scheme in the application, the positioning error of the current positioning information can be calculated more intelligently, so that the positioning verification process is more accurate and reliable. And when the positioning information is judged not to pass the standardization verification, an adjustment strategy corresponding to the current positioning position can be further formulated so as to prompt that the current positioning position of the target patient is quickly and accurately adjusted according to the adjustment strategy, so that the current positioning position meets the corresponding radiotherapy positioning standard, and the efficiency of radiotherapy is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the method and apparatus described above are referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of the radiation therapy planning system-based portal setting apparatus in accordance with embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. A method for verifying positioning information is characterized by comprising the following steps:
acquiring a positioning picture and a current positioning picture of a target patient;
calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance;
comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient;
and outputting the position information verification result.
2. The method according to claim 1, wherein the calculating a coordinate distance between corresponding same pixel points of the positioning picture and the current positioning picture, and determining the positioning error of the target patient based on the coordinate distance specifically comprises:
extracting each first pixel point on the corresponding organization edge of the positioning picture and each second pixel point on the corresponding organization edge of the current positioning picture;
pairing a first pixel point and a second pixel point which correspond to the same pixel;
calculating the coordinate distance between the successfully matched first pixel point and the second pixel point based on the first coordinate position of the first pixel point and the second coordinate position of the second pixel point;
calculating an average of each of the coordinate distances and determining the average as a setup error for the target patient.
3. The method according to claim 2, wherein comparing the positioning error with a preset tolerance range to obtain the target patient positioning information verification result specifically comprises:
acquiring a preset tolerance range corresponding to a patient positioning treatment project;
if the positioning error is judged to be beyond the preset tolerance range, judging that the current positioning information of the target patient is not verified;
and if the positioning error is judged not to exceed the preset tolerance range, judging that the current positioning information of the target patient passes verification.
4. The method according to claim 3, wherein after determining that the current positioning information of the target patient is not verified, the method further comprises:
and determining an adjustment strategy corresponding to the current positioning position according to the first coordinate position and the second coordinate position.
5. The method according to claim 4, wherein determining an adjustment strategy corresponding to the current position according to the first coordinate position and the second coordinate position specifically comprises:
taking the first coordinate position as the second coordinate position moving reference to obtain the target moving direction of each pixel point in the current positioning picture;
and integrating the moving direction of the target to obtain an adjustment strategy of the corresponding positioning position.
6. The method according to claim 5, wherein the outputting the verification result of the positioning information specifically comprises:
outputting first prompt information that the current position of the target patient fails to pass the verification, wherein the first prompt information comprises the adjustment strategy so as to prompt that the current position of the target patient is adjusted according to the adjustment strategy, so that the position error corresponding to the current position is within the preset tolerance range.
7. The method according to claim 3, wherein if it is determined that the current positioning information of the target patient passes the verification, the outputting the positioning information verification result specifically comprises:
and outputting second prompt information that the current positioning information of the target patient passes the verification.
8. An apparatus for verifying positioning information, comprising:
the acquisition module is used for acquiring a positioning picture and a current positioning picture of a target patient;
the calculation module is used for calculating the coordinate distance between the same corresponding pixel points of the positioning picture and the current positioning picture and determining the positioning error of the target patient based on the coordinate distance;
the comparison module is used for comparing the positioning error with a preset tolerance range to obtain a positioning information verification result of the target patient;
and the output module is used for outputting the positioning information verification result.
9. A non-transitory readable storage medium having stored thereon a computer program, wherein the program when executed by a processor implements the method of verifying the seating information of any one of claims 1 to 7.
10. A computer device comprising a non-volatile readable storage medium, a processor, and a computer program stored on the non-volatile readable storage medium and executable on the processor, wherein the processor implements the method of verifying the relocation information according to any one of claims 1 to 7 when executing the program.
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