Scanning inspection method, scanning inspection apparatus, and radiation delivery system

Abstract

The application relates to a scanning inspection method, a scanning inspection device and a radiation delivery system. The method comprises the following steps: acquiring a scanning image of a target object and / or scanning parameters corresponding to the scanning image, the scanning image being used to determine a radiation delivery plan for the target object; and performing an inspection on the scanning image and / or the scanning parameters according to scanning requirements associated with the radiation delivery. The method can solve the problem of inaccurate radiotherapy planning of a patient.

Description

Technical Field

[0001] This application relates to the field of scanned images, and in particular to scanned inspection methods, scanned inspection apparatus, and radiation delivery systems. Background Technology

[0002] Radiation delivery can include radiation processing, radiation verification, and radiation therapy, all of which require a high degree of accuracy.

[0003] For example, radiotherapy is a method of treating the human or animal body using high-energy radiation. Radiotherapy works by destroying or damaging cancer cells, thus preventing their division and proliferation, ultimately leading to their death. The dosage and delivery location of radiotherapy greatly affect its effectiveness; inaccurate radiation delivery during radiotherapy can negatively impact the patient's treatment.

[0004] CT localization scans are a necessary step before radiotherapy begins, and treatment plans are often based on the results of these scans. However, related techniques typically only adjust image quality during radiotherapy: for example, by processing artifacts such as metallic and motion artifacts that affect image quality, and adjusting radiation parameters based on the processed images during radiotherapy. However, the impact of CT localization scans on the overall radiotherapy planning is often overlooked.

[0005] There is currently no effective solution to the problem of inaccurate radiotherapy planning in related technologies. Summary of the Invention

[0006] Therefore, it is necessary to provide a scanning examination method, scanning examination device, and radiation delivery system that can solve the problem of inaccurate radiotherapy planning, in response to the above-mentioned technical problems.

[0007] Firstly, this embodiment provides a scanning inspection method, the method comprising:

[0008] Acquire scan images of a target object and / or scan parameters corresponding to the scan images, the scan images being used to determine a radiation delivery plan for the target object;

[0009] The scan images and / or scan parameters are checked according to the scan requirements associated with radiographic delivery.

[0010] In some embodiments, the check is performed on the scanned images and / or the scanned parameters before the radiation delivery plan is determined.

[0011] In some embodiments, the scanning inspection method includes:

[0012] Determine the scanning parameters corresponding to the scanned image;

[0013] Determine whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements;

[0014] If the scanning parameters do not match the target scanning parameters, then the scanned image and / or the scanning parameters are determined to have failed the check.

[0015] In some embodiments, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes:

[0016] Determine the first scanned region in the scanned image;

[0017] Determine the scanning protocol used to obtain the scanned image, and determine the second scanning region corresponding to the scanning protocol;

[0018] If the first scanned region and the second scanned region are inconsistent, it is determined that the scanned parameters do not match the target scanned parameters.

[0019] In some embodiments, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes:

[0020] Determine the size of the region of interest in the scanned image along the layer thickness direction;

[0021] Determine the scan layer thickness of the scanned image;

[0022] If the scanned layer thickness does not meet the preset layer thickness condition corresponding to the size, it is determined that the scan parameters do not match the target scan parameters.

[0023] In some embodiments, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes:

[0024] Determine the integrity of the region of interest in the scanned image;

[0025] If the integrity does not meet the preset integrity requirements, it is determined that the scanning parameters do not match the target scanning parameters.

[0026] In some embodiments, performing the check on the scan image and / or the scan parameters according to the scan requirements associated with radiographic delivery includes:

[0027] The spatial state of the support platform carrying the target object is determined based on the scanned image;

[0028] Based on the spatial state, it is determined whether the working parameters of the support platform during the scanning process of the target object meet the target working parameters corresponding to the scanning requirements. If the working parameters do not match the target working parameters, it is determined that the scanned image has failed the inspection.

[0029] In some embodiments, performing the check on the scan image and / or the scan parameters according to the scan requirements associated with radiographic delivery includes:

[0030] Determine the third scan region in the scanned image and / or the fourth scan region corresponding to the scan protocol including the scan parameters;

[0031] Determine the fifth scanning region corresponding to the stated scanning requirements;

[0032] If the third or fourth scanning region is inconsistent with the fifth scanning region, then the scanned image and / or the scanning parameters are determined to have failed the check.

[0033] In some embodiments, after determining that the scanned image and / or the scanned parameters have failed the check, the method further includes:

[0034] A scan prompt is generated based on the results of the checks performed on the scanned image and / or the scan parameters.

[0035] Secondly, this embodiment provides a scanning inspection apparatus, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the scanning inspection method described in the first aspect above.

[0036] Thirdly, this embodiment provides a radiation delivery system, which includes: an imaging device, a scanning examination device, and a radiotherapy device; wherein,

[0037] The imaging device is used to acquire a scanned image of the target object and / or scanned parameters corresponding to the scanned image;

[0038] The scanning inspection apparatus is used to perform inspections on the scanned images and / or the scanned parameters according to scanning requirements associated with radiographic delivery;

[0039] The radiotherapy apparatus is used to obtain a radiation delivery plan for the target object based on the scanned images examined, and to apply a radiation beam to the target object based on the radiation delivery plan.

[0040] The aforementioned scanning examination method, scanning examination device, and radiation delivery system check the scanned images and / or the corresponding scanning parameters based on scanning requirements. Ensuring that the scanned images and / or scanning parameters meet the scanning requirements, a radiotherapy plan is planned based on the scanned images and / or scanning parameters. This avoids inaccurate radiotherapy planning caused by image problems such as unreasonable scanned images or images that do not meet actual needs, thus ensuring the accuracy of the radiotherapy plan planned based on the scanned images. Attached Figure Description

[0041] Figure 1 This is a diagram illustrating the application environment of the scanning and inspection method in one embodiment;

[0042] Figure 2 This is a flowchart illustrating a scanning inspection method in one embodiment;

[0043] Figure 3 This is a flowchart illustrating a CT scan examination method in one embodiment;

[0044] Figure 4 This is a structural block diagram of a scanning inspection device in one embodiment;

[0045] Figure 5 This is a structural block diagram of a radiation delivery system in one embodiment;

[0046] Figure 6 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0048] The scanning and inspection method provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store the data that server 104 needs to process. This data storage system can be integrated onto server 104 or located in the cloud or on other network servers. Scanned images are acquired based on the terminal, or through interaction between the terminal and the server, and these images are inspected to achieve scan inspection (or scanned image quality control). Inspection results and related data such as scanned images can be stored in this system. Terminal 102 can be, but is not limited to, various personal computers, laptops, smartphones, tablets, and other devices. Server 104 can be implemented using a standalone server or a server cluster consisting of multiple servers.

[0049] In one embodiment, such as Figure 2 As shown, a scanning inspection method is provided, which is applied to... Figure 1 Taking terminal 102 as an example, the explanation includes the following steps:

[0050] Step S202: Obtain a scanned image of the target object and / or scanned parameters corresponding to the scanned image. The scanned image is used to determine a radiation delivery plan for the target object.

[0051] The target object is an object requiring radiation delivery (e.g., a component to be processed, a patient, or a laboratory mouse). The radiation delivery plan includes parameters such as the site, extent, treatment time, and radiation dose. If the scanned images are accurate, the radiation delivery plan based on them can meet the radiation delivery needs of the target object (e.g., treatment plan); if the scanned images are inaccurate, the radiation delivery plan based on them cannot fully meet the radiation delivery needs of the target object. As an example, a physician or physicist can develop a radiation therapy plan for a patient based on scanned images obtained from scanning the patient, to achieve radiation therapy for the patient. The scanned images can be various types of images, such as CT (Computed Tomography) images, DR (Digital Radiography) images, MRI (Magnetic Resonance Imaging) images, optical images, ultrasound images, etc. The following primarily uses CT images as a non-limiting example for illustration, but it is not limited to this; the technical solutions involved in this disclosure can also be applied to other types of scanned images. Scanning parameters may include various parameters used to obtain scanned images, such as, but not limited to, one or more of the following parameters: scanning area, support platform position, scanning range, scanning layer thickness, scanning equipment operating conditions, etc.

[0052] Step S204: Perform a check on the scan images and / or scan parameters according to the scan requirements associated with radiation delivery.

[0053] Radiographic delivery is a radiologically based method. As examples, radiographic delivery can include radiotherapy, radiation processing, pre-radiotherapy radiation verification, and so on. Scanning requirements can be determined based on the subsequent radiographic delivery, and may include one or more requirements such as whether the scan quality meets the image quality requirements of the subsequent radiographic delivery plan, the compatibility between the scanned image and the subsequent radiographic delivery, whether the scanned image is suitable for the user's use during radiographic delivery, and whether the scanned image meets the indicators related to clinical standards for radiographic delivery. As a non-limiting example, scanning requirements may specifically include requirements for scanning parameters, such as one or more requirements for scanning site, support platform (e.g., bed, stage, etc.) location, scanning range, and slice thickness. Scanning requirements may be based on user preferences, user habits, and / or standards or specifications in the field (e.g., international standards, national standards, industry specifications, expert consensus, etc.). When performing radiographic delivery, radiation rays need to be delivered to the target object with reference to one or more scanning requirements.

[0054] Performing checks on scanned images can include checking scan parameters (such as scan area, support platform position, scan range, and scan slice thickness) determined from the scanned images or obtained by reading scan equipment logs. It can also include checking the quality and content of the scanned images themselves (such as scanned image resolution, scanned image artifacts, and whether the region of interest in the scanned image is obscured by other structures). Checking scan parameters can include checking whether the scanned images based on the scanned parameters can meet the requirements of the radiographic delivery plan. For example, if the scanned parameters are consistent with or higher than the expected scanned parameters, the scanned parameters can be considered to have passed the check. Similarly, if the scanned images obtained or simulated based on the scanned parameters meet the expected scanned image requirements, the scanned parameters can be considered to have passed the check. This application does not limit how scanned images and / or scanned parameters are checked, but is not limited to the above situations.

[0055] Optionally, pre-set requirements or demands (i.e., scanning requirements) for parameters related to radiographic delivery, such as the scanning site, support platform status, scanning range, and scanning slice thickness, are obtained. A radiographic delivery plan, including parameters such as the site, range, and depth to be radiographically delivered, is determined based on the scanned image and / or the corresponding scanning parameters. The radiographic delivery-related scanning requirements are compared with the radiographic delivery plan obtained based on the scanned image and / or scanning parameters. Based on the comparison results, it is determined whether a radiographic delivery plan that meets the radiographic delivery requirements can be executed based on the current scanned image, and / or whether a scanned image that meets the requirements or demands can be obtained based on the current scanning parameters.

[0056] The above-mentioned scanning inspection method examines the scanned images and / or scanned parameters according to the scanning requirements associated with the radiotherapy delivery plan of the scanned images, so as to ensure that the radiotherapy plan obtained based on the scanned images is accurate and reasonable, thereby improving the efficiency and accuracy of radiotherapy.

[0057] In one embodiment, the scanned images and / or scan parameters are checked before determining the radiation delivery plan. Optionally, after checking the scanned images according to the scan requirements associated with radiation delivery, if the check results indicate that the radiation delivery plan based on the current scanned images can meet the radiation delivery requirements, then the current scanned images can be determined to be reasonable, and a radiation delivery plan for the target object can be generated based on the current scanned images; otherwise, the current scanned images can be determined to be unreasonable, and it is not recommended to generate a radiation delivery plan for the target object based on the current scanned images. Further, after the radiotherapy localization / planning CT scan is completed, the scanned images are checked according to the scan requirements associated with radiation delivery. If the scanned images are unreasonable, new scanned images can be acquired. Optionally, after checking the scan parameters according to the scan requirements associated with radiation delivery, if the check results indicate that the scanned images obtained based on the current scan parameters can meet the requirements of the radiation delivery plan, then the current scan parameters can be determined to be reasonable, and images can be acquired based on the current scan parameters, or it can be determined that the scanned images already acquired based on the current scan parameters meet the requirements.

[0058] In one embodiment, a check based on scanning requirements associated with radiographic delivery is performed on the scanned image while it is being obtained. In another embodiment, the check is performed on the scanned image immediately or promptly after it is obtained. This allows a new scanned image to be acquired immediately if the scanned image fails the check, without having to reschedule the scan.

[0059] In one embodiment, the scanning parameters are checked before a scanned image is obtained based on the scanning parameters. In another embodiment, the scanning parameters are checked after a scanned image is obtained.

[0060] This embodiment improves the effectiveness of radiotherapy delivery while increasing the planning efficiency of radiotherapy delivery plans by checking scanned images and / or scanned parameters before radiotherapy delivery planning.

[0061] In one embodiment, the scanning inspection method includes: determining scanning parameters corresponding to the scanned image; determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements; if the scanning parameters do not match the target scanning parameters, determining that the scanned image and / or scanning parameters have failed the inspection.

[0062] The target scanning parameters can be parameters included in the scanning requirements, parameters obtained based on feedback from the scanning requirements, or parameters corresponding to the scanning requirements. As a non-limiting example, the target scanning parameters can be one or more of the following: scanning area (e.g., scanning site), support platform location, scanning range, scanning slice thickness, etc. The target scanning parameters can also include other parameters related to the radiographic delivery of the target object, which will not be elaborated here. Optionally, the scanning parameters corresponding to the scanned image can be obtained through scanning equipment logs, scanning protocols, etc., corresponding to the scanned image. As a non-limiting example, taking the acquisition of scanning parameters through a scanning protocol as an example, if the scanning parameters do not match the target scanning parameters, it is determined that the scanning protocol including the scanning parameters does not match the target scanning parameters.

[0063] If multiple scanning parameters and multiple target scanning parameters are included, different matching methods can be set for different types of scanning parameters and target scanning parameters. For example, if the scanning area (e.g., the scanning site) obtained based on the scanning parameters is different from or has no corresponding relationship with the scanning area (e.g., the scanning site) obtained based on the target scanning parameters, it is determined that the scanning protocol does not match the target scanning parameters. If the difference between the scanning layer thickness obtained based on the scanning parameters and the scanning layer thickness obtained based on the target scanning parameters is within a preset threshold range, it is determined that the scanning protocol does not match the target scanning parameters. If the scanning range obtained based on the scanning parameters cannot completely contain the scanning range corresponding to the target scanning parameters, or if the difference between the scanning range corresponding to the scanning parameters and the scanning range corresponding to the target scanning parameters exceeds a specified threshold, it is determined that the scanning protocol does not match the target scanning parameters.

[0064] If multiple scan parameters and multiple target scan parameters are included, the same matching method can be set for different types of scan parameters and target scan parameters. For example, if scan parameters and target scan parameters of the same type are identical, then the scan protocol is determined to match the target scan parameter; if scan protocols of the same type are different from the target scan parameter, then the scan protocol is determined to not match the target scan parameter. Alternatively, if the difference between the scan parameter and the corresponding target scan parameter is within a preset threshold range (covering the case where both are identical), then the scan protocol is determined to match the target scan parameter; otherwise, the scan protocol is determined to not match the target scan parameter.

[0065] Optionally, after determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements, the mismatched target scanning parameters can be determined based on the matching result, the mismatched target scanning parameters can be modified, and the target object can be scanned again based on the modified scanning parameters, and then step S202 can be repeated.

[0066] Optionally, the scanning parameters mentioned above can be obtained based on the scanning protocol used to acquire the scanned image. The scanning parameters in the scanning protocol include, but are not limited to, the scanned site, scan range, and scan slice thickness. If the target scanning parameters cannot match the scanning parameters corresponding to the scanning protocol, an incorrect scanning protocol may have been used during image acquisition, or the scan range, scan slice thickness, and other parameters in the scanning protocol may be incorrectly set. Taking CT scans as an example, the CT values ​​of CT images of the same site scanned using different protocols may differ by tens or even hundreds of HU (Hounsfield Units). An incorrect selection of the scanning protocol will affect the accuracy of dose calculation during radiation delivery planning. Incorrect settings of parameters such as scan range and scan slice thickness will cause problems in accurately locating the region of interest, thus affecting the accuracy of setting parameters such as radiation dose and range during radiation delivery planning. Therefore, if it is determined that the scanning parameters in the scanned image cannot match the scanning parameters in the scanning protocol, the scanned image needs to be reacquired. Determining whether the scanned image meets the scanning requirements based on the scanning protocol can avoid problems such as unreasonable scanned images and inaccurate radiation delivery dose planning caused by incorrect selection of the scanning protocol or incorrect setting of scanning protocol parameters.

[0067] In this embodiment, the scanned images are checked by matching the scanning protocol with the target scanning parameters to ensure that the scanned images can meet various scanning requirements and improve the accuracy of the radiotherapy plan.

[0068] In one embodiment, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: determining a first scanning region in the scanned image; determining a scanning protocol used to obtain the scanned image, and determining a second scanning region corresponding to the scanning protocol; if the first scanning region and the second scanning region are inconsistent, determining that the scanning parameters do not match the target scanning parameters.

[0069] The scanned image can be identified using image recognition methods, and the first scanned region can be obtained based on the recognition results. Optionally, it can be determined whether the first scanned region is consistent with the second scanned region indicated by the scanning protocol. If the overlap between the first and second scanned regions does not meet the preset requirements (e.g., the first and second scanned regions are completely different, or the first / second scanned region is not completely covered by the range of the second / first scanned region), then it is determined that the first and second scanned regions are inconsistent, and the scanning protocol selection is incorrect, resulting in the scanning parameters in the scanned image not corresponding to the scanning parameters in the scanning protocol.

[0070] Optionally, during the scanning process, after selecting a scanning protocol, the user manually determines the specific scanning area according to the scanning requirements and performs the scan to obtain a scanned image. In this case, the scanning parameters corresponding to the scanned image include the second scanning region to which the scanning protocol applies; the target scanning parameters include the first scanning region indicated by the scanned image. If the scanning parameters match the target scanning parameters, then the first and second scanning regions match; otherwise, if the first and second scanning regions do not match, an error in the selection of the scanning protocol exists.

[0071] In this embodiment, the scanning protocol is determined to be compatible with the scanning site based on the scanned image, thereby checking the scanning protocol to avoid dose calculation errors in the radiation delivery planning stage caused by incorrect selection of the scanning protocol.

[0072] In one embodiment, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: determining the size of the region of interest in the scanned image in the layer thickness direction; determining the scanning layer thickness of the scanned image; and determining that the scanning parameters do not match the target scanning parameters if the scanning layer thickness does not meet the preset layer thickness condition corresponding to the size.

[0073] The region of interest (ROI) in the scanned image can include one or more of the following regions: the target area (lesion) in the scanned image, the area surrounding the target area, or any region desired by the user. Preset slice thickness conditions are used to indicate the slice thickness corresponding to the current ROI size. Preset slice thickness conditions can include restrictions on scanning layer parameters during the scanning process, such as restrictions on slice thickness, interslice spacing, etc. Different sizes of the ROI in the slice thickness direction correspond to different preset slice thickness conditions: the smaller the ROI in the slice thickness direction, the smaller the slice thickness should be; conversely, for ROIs with larger sizes in the slice thickness direction, a relatively larger slice thickness can be used. Optionally, the ROI can be determined based on user-inputted information such as the type of scanned object and the severity of the disease; the size of the ROI in the slice thickness direction can be identified in the scanned image using image recognition methods; and the preset slice thickness conditions can be obtained based on the size in the slice thickness direction.

[0074] Optionally, the scanning layer thickness of the scanned image can be determined based on the scanning protocol; alternatively, the scanning layer thickness of the scanned image can be determined based on image metadata in the scanned image or layer thickness information recorded in the scanning device.

[0075] Optionally, the scanning layer thickness corresponding to the current region of interest size is obtained according to a preset layer thickness condition. If the scanning layer thickness of the scanned image is greater than the scanning layer thickness corresponding to the preset layer thickness condition, it is determined that the scanning layer thickness is too large and does not meet the preset layer thickness condition. If the scanning layer thickness of the scanned image is less than or equal to the scanning layer thickness corresponding to the preset layer thickness condition, then the scanning layer thickness of the scanned image meets the preset layer thickness condition. Optionally, if the scanning layer thickness of the scanned image is less than the scanning layer thickness corresponding to the preset layer thickness condition, the scanning layer thickness of the scanned image can also be selectively modified as needed.

[0076] This embodiment determines whether the scanning layer thickness of the current scanned image meets the preset layer thickness conditions based on the size of the region of interest in the layer thickness direction, so as to determine whether the scanned image meets the scanning requirements. This avoids the problem of inaccurate delineation of the area to be radiotreated when the volume is small due to excessively thick scanning layer thickness, thereby improving the accuracy of radiation delivery planning.

[0077] In one embodiment, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: determining the integrity of the region of interest in the scanned image; if the integrity does not meet the preset integrity requirements, determining that the scanning parameters do not match the target scanning parameters.

[0078] The region of interest (ROI) is the area identified in the scanned images as requiring or potentially affected by radiotherapy. A complete RIO in a scanned image means that the RIO encompasses the scanned area specified by the scanning protocol or the user.

[0079] Optionally, the region of interest (ROI) in the scanned image can be determined based on image recognition methods or other relevant algorithms. The corresponding scanning region is determined based on target scanning parameters input by the user, such as the type of scanned part and the severity of the disease. If the ROI cannot completely encompass the scanning region corresponding to the target scanning parameters, it indicates that the scanning region is incomplete, and a new scanned image needs to be acquired.

[0080] In this embodiment, by checking the integrity of the region of interest, it is determined whether the region in the current scanned image that needs to be radiographically delivered is complete, thus avoiding the problems of inaccurate radiographic delivery planning and reduced effectiveness caused by incomplete scanning of the radiographic delivery region.

[0081] In one embodiment, a check can be performed to determine whether the area included in the scanned image and / or the scanned area corresponding to the scanned protocol matches the radiographic delivery area corresponding to the radiographic delivery plan. As an example, checking the scanned image and / or scanned parameters based on the scanned requirements associated with radiographic delivery includes: identifying a third scanned region (e.g., a body part captured in the scanned image) and / or a fourth scanned region (e.g., a body part to which the scanned protocol applies) corresponding to the scanned protocol including the scanned parameters; identifying a fifth scanned region (e.g., the body part to which radiographic delivery is desired) corresponding to the scanned requirements; and determining that the scanned image and / or scanned parameters fail the check if the third or fourth scanned region does not match the fifth scanned region. In this manner, it can be determined whether the content of the scanned image and / or the scanned parameters used to acquire the scanned image correspond to and match the radiographic delivery plan.

[0082] In one embodiment, the accuracy of the radiation delivery region within a scanned image can be checked. Determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: acquiring the region of interest (ROI) in the scanned image and the target region corresponding to the target scanning parameters, and determining whether the ROI and the target region are consistent. If the ROI and the target region are inconsistent, it is determined that the scanning parameters do not match the target scanning parameters, and the scanned image fails the check.

[0083] The region of interest (ROI) may include the area where radiotherapy is required, as determined by the scanned images. Optionally, a scan file of the scanned images is acquired; a scan is performed based on the scan protocol contained in the scan file, and after obtaining the scanned images, the ROI is extracted from the scanned images. The target region may include the area where radiotherapy is required, as indicated by the target scan parameters. Optionally, the target scan parameters corresponding to the scan requirements are acquired, and the target region is determined based on the target scan parameters. If the scan parameters match the target scan parameters, the ROI and the target region should be consistent.

[0084] Optionally, determining whether the region of interest (ROI) and the target region are consistent includes: identifying the scanning part corresponding to the ROI and obtaining the scanning part in the target region corresponding to the target scanning parameters. The ROI and target region can be determined to be inconsistent if there is a difference between the scanning part corresponding to the ROI and the scanning part corresponding to the target region. Alternatively, the ROI and target region can be determined to be inconsistent if the target region is not present in the ROI, or if the ROI does not contain a complete target region.

[0085] In this embodiment, by comparing whether the target area and the region of interest are consistent, it can be checked whether the scan image obtained based on the scan parameters corresponding to the scan protocol does not meet the scan requirements due to the setting of an incorrect scan protocol; thereby avoiding the problems of inaccurate radiographic delivery area and inability to accurately and efficiently obtain radiographic delivery plan caused by the wrong selection of scan protocol.

[0086] The position of the support platform during image acquisition is also a factor affecting radiotherapy planning. Taking a radiotherapy-guided CT scanner as an example, many primary care hospitals' radiotherapy departments lack dedicated radiotherapy-guided CT scanners and need to borrow CT scanners from the radiology department to scan patients for planning CT scans. Since radiology CT scanners typically use curved beds, while radiotherapy-guided CT scanners use flat beds, when using a borrowed radiology CT scanner to obtain images, a flat bed needs to be manually placed on the original curved CT bed and kept level. However, in practice, due to external factors, the flat bed placed on the curved CT bed may tilt, causing a difference between the patient's position during the planned CT scan and the actual treatment position. This affects the accuracy of radiotherapy planning, reduces the effectiveness of radiotherapy, and may even harm the patient.

[0087] To address the aforementioned issues, in one embodiment, an inspection of the scanned image is performed based on scanning requirements associated with radiographic delivery, including: determining the spatial state of the support platform carrying the target object based on the scanned image; determining whether the operating parameters of the support platform during the scanning process of the target object meet the target operating parameters corresponding to the scanning requirements based on the spatial state; if the operating parameters do not match the target operating parameters, the scanned image is determined to have failed the inspection.

[0088] The spatial state includes, but is not limited to, the spatial position and orientation of the support platform. Spatial orientation can include spatial position information such as the tilt direction and tilt angle of the support platform relative to a specified reference axis. The operating parameters of the support platform obtained based on the spatial state include, but are not limited to, one or more of the following parameters: motion parameters of the support platform, machine deviation of the support platform, etc. The machine deviation parameters of the support platform can be parameters indicating the characteristics of the support platform in various directions, such as the position of the bed board on the horizontal plane, the height of the bed board, and whether the bed board is level front-to-back and left-to-right. The motion parameters of the support platform can be motion-related parameters indicating whether the support platform is working properly relative to the machine, and the accuracy of machine positioning.

[0089] Optionally, taking the target operating parameters indicating the horizontal position of the support platform as an example: image recognition is performed on the scanned image to obtain the spatial state of the support platform, and the support platform's horizontal position is determined based on its spatial state. If the support platform is determined to be horizontal, the operating parameters are determined to match the target operating parameters, and the scanned image passes the inspection; otherwise, the operating parameters are determined to be mismatched, and the scanned image fails the inspection. Depending on the actual application requirements, the scanning requirement for the support platform can be modified from horizontal to other conditions, which will not be elaborated here. Optionally, the spatial state can be obtained by acquiring the spatial coordinates of the support platform; the horizontal position of the support platform can then be determined based on these spatial coordinates. Alternatively, the spatial state can be obtained through the relative positional relationship between the support platform and its surrounding environment; the horizontal position of the support platform can then be determined based on this relative positional relationship.

[0090] Optionally, if it is determined that the support platform does not meet the scanning requirements, the method further includes: performing coordinate correction on the scanned image based on the tilt of the support platform indicated by its spatial coordinates.

[0091] In this embodiment, by checking the spatial coordinates of the support platform in the scanned image, it is ensured that the positioning of the target object during radiotherapy is consistent with the positioning when the scanned image is acquired, thereby improving the accuracy of radiotherapy planning.

[0092] In one embodiment, before reacquiring the scanned image based on scanning requirements, the method further includes generating a scan prompt based on the results of an inspection performed on the scanned image and / or scan parameters.

[0093] The scanning prompts can provide reminders regarding the spatial status of the support platform, scanning range, scanning layer thickness, scanning protocol, and other information. Optionally, if the scanned image fails the inspection based on the scanning parameters, and / or if the operating parameters of the support platform cannot meet the target operating parameters corresponding to the scanning requirements, a scanning prompt can be generated based on the current scanning parameters and / or operating parameters.

[0094] In this embodiment, by generating scan prompts, even if the user discovers image problems in the scanned image, the situation where the user obtains a new scanned image that still does not meet the scan requirements can be reduced, thereby improving the efficiency of radiological delivery planning.

[0095] Current radiotherapy image processing technologies typically only address artifacts present in radiotherapy images, including metal artifacts and motion artifacts. They lack methods for checking and correcting pre-radiotherapy image tilt, particularly treatment bed tilt. However, during localization / planning CT scans, the following situations may arise: the CT scan area is insufficient to completely cover the tumor region; the slice thickness is too large, potentially leading to inaccurate tumor delineation for smaller tumors. In these cases, patients usually need to undergo a re-localization CT scan, which not only increases the workload for physicians and technicians and wastes valuable treatment time but may also lead to medical disputes. Therefore, in one embodiment, the CT scan images are examined after the localization / planning CT scan is performed. Taking a radiotherapy localization / planning CT scan of a lung tumor as an example, after the user selects the head as the scan protocol and sets the reconstructed CT slice thickness to 5mm, the obtained CT images are examined.

[0096] Figure 3 A flowchart illustrating a CT scan examination method is provided, such as... Figure 3 As shown, it includes the following steps:

[0097] Step S301: Scan the protocol check and determine if the check passes. If the check fails, proceed to step S302; if the check passes, proceed to step S303.

[0098] Optionally, the scan protocol check may include checking whether the scan area indicated by the scan protocol matches or is consistent with the scan area indicated by the scan requirements. For example, the check process may include: obtaining the scan protocol corresponding to the CT scan image; determining that the head protocol is used during the CT scan based on the scan protocol recorded in the CT file; determining that the scan area corresponding to the head protocol is the head; determining that the scan area is the chest based on the target scan parameters in the scan requirements; if the head region corresponding to the scan protocol does not match the chest region in the scan image, the check fails, and step S302 is executed. Alternatively, the scan protocol check may also include checking whether the area to which the scan protocol applies matches or is consistent with the scan area in the actual CT image. For example, the check process may include: determining that the head protocol is used during the CT scan based on the scan protocol recorded in the CT file, i.e., the second scan area corresponding to the head protocol is the abdomen; determining that the scan area in the CT image is the chest through image recognition of the CT image, i.e., the first scan area corresponding to the CT image is the chest; if the abdomen does not match the chest, the check fails, and step S302 is also executed.

[0099] Step S302: Provide a prompt. Specifically, the user can be informed that the scanning protocol may have been selected incorrectly, and a suggested scanning protocol can be generated. By checking the scanned area and generating prompts in real time, inaccurate dose calculations due to mismatch between the scanning protocol and the scanned area can be avoided.

[0100] Step S303: Perform a level check on the support platform and determine if the check passes. If the check fails, proceed to step S304; if the check passes, proceed to step S305. The level check of the support platform includes: determining whether the support platform needs to remain level in all directions based on the target working parameters corresponding to the scanning requirements. The support platform is identified in the scanned image, and its levelness in all directions is determined based on the identified spatial coordinates.

[0101] Step S304: A prompt is given and confirmation is made regarding whether to perform correction. Specifically, a prompt is given indicating that the support platform is not level, and options are generated for the user to choose whether to perform level correction on the scanned images. This setting ensures that the planned positioning of the target object during CT image acquisition is consistent with the radiation delivery positioning of the target object during radiotherapy.

[0102] Step S305: Scan range check to determine if the check passes. If the check fails, proceed to step S306; if the check passes, proceed to step S307. The scan range check is used to verify whether the scan range meets the requirements. As a non-limiting specific example, the scan range check may include: combining detailed patient information input by the user into the tumor information management system, such as tumor type and disease, to determine that the site requiring radiographic delivery is a lung tumor. The size of the lung tumor is identified from the obtained CT image to obtain the region of interest. The CT scan range is acquired and compared with the region of interest identified from the CT image. If the comparison shows that the tumor is completely within the CT range, the region of interest in the scan image is complete, the check passes, and step S307 is executed; otherwise, the CT image is determined to have image problems, the check fails, and step S306 is executed.

[0103] Step S306: Provide prompts. Specifically, based on the inspection results, inform the user that the scanning range is too small, the scanning range is off-target, etc., to avoid situations where inaccurate scanning ranges require repeated image positioning.

[0104] Step S307: CT slice thickness check to determine if the check passes. If the check fails, proceed to step S308; if the check passes, the image check ends. The CT slice thickness check includes: determining the size of the lung tumor in the CT slice thickness direction to be approximately 3 cm based on the size of the lung tumor identified in the CT image; obtaining a scan slice thickness of 5 mm according to the scanning protocol; referencing the size of the lung tumor in the CT slice thickness direction to obtain preset slice thickness conditions; determining that the current slice thickness of 5 mm is too large compared to the size of the lung tumor in the CT slice thickness direction, and therefore the check fails.

[0105] Step S306: Provide a prompt. Specifically, a prompt can be generated to recommend that the user use a smaller CT slice thickness for scanning, avoiding problems such as low image resolution and low accuracy of radiotherapy planning caused by excessively large scan slice thickness.

[0106] Optionally, after the planned CT scan is completed, if there are problems with the images, the scanning parameters can be modified according to the prompts, and new scan images can be obtained based on the new scanning parameters, avoiding repeated acquisition work. For example, prompts can be given and corrections can be made for whether the treatment bed is tilted, ensuring that the positioning of the planned CT scan is consistent with the actual treatment positioning of the patient; prompts can be given and corrections can be made if the CT slice thickness does not match the preset slice thickness conditions, assisting the user in modifying the scan slice thickness, etc.

[0107] The CT image quality inspection method in this embodiment checks the CT scan protocol, support platform position, CT scan range, and CT scan slice thickness information of the radiotherapy delivery CT image after the planned CT scan for radiotherapy positioning is completed. By checking for potential problems in the image, image problems caused by CT images not meeting scanning requirements are avoided, thus preventing problems such as repeated positioning, inconsistency between planned and radiotherapy positioning, and insufficient image resolution caused by image problems. This achieves the effect of improving radiotherapy efficiency and accuracy.

[0108] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the steps or stages of other steps. For example, the order of steps S301, S303, S305, and S307 described above is not necessarily sequential; they can be executed synchronously or alternately.

[0109] Based on the same inventive concept, this application also provides a scanning inspection apparatus for implementing the scanning inspection method described above. The solution provided by this apparatus is similar to the implementation described in the above method; therefore, the specific limitations in one or more scanning inspection apparatus embodiments provided below can be found in the limitations of the scanning inspection method described above, and will not be repeated here.

[0110] In one embodiment, a scanning inspection apparatus 400 is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in one or more of the scanning inspection method embodiments described above.

[0111] In one embodiment, Figure 4 This is a schematic diagram of the structure of a scanning inspection device 400, as shown below. Figure 4 As shown, it includes: an acquisition module 401 and an inspection module 402, wherein: the acquisition module 401 is used to acquire a scanned image of the target object and / or scanned parameters corresponding to the scanned image, the scanned image being used to determine a radiographic delivery plan for the target object; the inspection module 402 is used to perform an inspection on the scanned image and / or scanned parameters according to the scanned requirements associated with radiographic delivery.

[0112] Optionally, the inspection module 402 performs an inspection of the scanned images and / or scan parameters before determining the radiation delivery plan.

[0113] In one embodiment, the inspection module 402 performs an inspection on the scanned image and / or scanned parameters according to the scanned requirements associated with radiographic delivery, including: determining the scanned parameters corresponding to the scanned image; determining whether the scanned parameters match the target scanned parameters corresponding to the scanned requirements; and if the scanned parameters do not match the target scanned parameters, determining that the scanned image has failed the inspection.

[0114] Optionally, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: determining a first scanning region in the scanned image; determining a scanning protocol used to obtain the scanned image, and determining a second scanning region corresponding to the scanning protocol; if the first scanning region and the second scanning region are inconsistent, determining that the scanning parameters do not match the target scanning parameters.

[0115] Optionally, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: determining the size of the region of interest in the scanned image in the slice thickness direction; determining the scan slice thickness of the scanned image; and determining that the scanning parameters do not match the target scanning parameters if the scan slice thickness does not meet the preset slice thickness condition corresponding to the size.

[0116] Optionally, determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: determining the integrity of the region of interest in the scanned image; if the integrity does not meet the preset integrity requirements, determining that the scanning parameters do not match the target scanning parameters.

[0117] In one embodiment, the inspection module 402 performs an inspection on the scanned image and / or scanned parameters according to the scanned requirements associated with radiographic delivery, including: determining the spatial coordinates of the support platform carrying the target object based on the scanned image; determining whether the working parameters of the support platform during the scanning process of the target object meet the target working parameters corresponding to the scanned requirements based on the spatial coordinates; if the working parameters do not match the target working parameters, then determining that the scanned image has failed the inspection.

[0118] In one embodiment, the inspection module 402 performs an inspection on the scanned image and / or scanned parameters according to the scanned requirements associated with radiographic delivery, including: determining a third scanned region in the scanned image and / or a fourth scanned region corresponding to a scanned protocol including the scanned parameters; determining a fifth scanned region corresponding to the scanned requirements; and determining that the scanned image and / or scanned parameters have failed the inspection if the third or fourth scanned region is inconsistent with the fifth scanned region.

[0119] In one embodiment, the scanning inspection device 400 further includes a prompting module for generating a scanning prompt based on the inspection results performed on the scanning image and / or scanning parameters after determining that the scanned image has failed the inspection.

[0120] Each module in the aforementioned scanning and inspection device 400 can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the operations corresponding to each module.

[0121] Based on the same inventive concept, this application also provides a radiation delivery system for implementing the scanning inspection method described above. The solution provided by this system is similar to the implementation described in the above method; therefore, the specific limitations in one or more radiation delivery system embodiments provided below can be found in the limitations of the scanning inspection method described above, and will not be repeated here.

[0122] In one embodiment, such as Figure 5As shown, a radiotherapy system 500 is provided, including: an imaging device 501, a scanning examination device 502, and a radiotherapy device 503. The imaging device 501 is used to acquire scan images of a target object and / or scanning parameters corresponding to the scan images; the scanning examination device 502 is used to examine the scan images and / or scanning parameters according to scanning requirements associated with radiotherapy delivery; the radiotherapy device 503 is used to obtain a radiotherapy delivery plan for the target object based on the examined scan images, and to apply a radiation beam to the target object based on the radiotherapy plan. The examined scan images may include scan images examined through scanning images, or scan images acquired based on scanning parameters examined through scanning parameters.

[0123] Optionally, the imaging device 501 processes CT scan signals to obtain scanned images and / or scan parameters corresponding to the scanned images. Optionally, the imaging device 501 may also include a CT scanning device. The radiotherapy device 503 includes at least a radiation source. The solution to the problem provided by the scanning examination device is similar to the solution described in the above methods. Optionally, the examination device may also implement the steps in one or more of the above scanning examination methods.

[0124] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 6 As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When executed by the processor, the computer program implements a scanning and inspection method. The display unit is used to form a visually visible image and can be a display screen or a projection device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0125] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0126] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0127] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0128] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0129] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0130] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0131] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A scanning inspection method, characterized in that, include: Acquire scan images of a target object and / or scan parameters corresponding to the scan images, the scan images being used to determine a radiation delivery plan for the target object; The scan images and / or scan parameters are checked according to the scan requirements associated with radiographic delivery.

2. The scanning inspection method according to claim 1, characterized in that, The check is performed on the scanned images and / or the scanned parameters before the radiation delivery plan is determined.

3. The scanning inspection method according to claim 1, characterized in that, include: Determine the scanning parameters corresponding to the scanned image; Determine whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements; If the scanning parameters do not match the target scanning parameters, then the scanned image and / or the scanning parameters are determined to have failed the check.

4. The scanning inspection method according to claim 3, characterized in that, The step of determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: Determine the first scanned region in the scanned image; Determine the scanning protocol used to obtain the scanned image, and determine the second scanning region corresponding to the scanning protocol; If the first scanned region and the second scanned region are inconsistent, it is determined that the scanned parameters do not match the target scanned parameters.

5. The scanning inspection method according to claim 3, characterized in that, The step of determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: Determine the size of the region of interest in the scanned image along the layer thickness direction; Determine the scan layer thickness of the scanned image; If the scanned layer thickness does not meet the preset layer thickness condition corresponding to the size, it is determined that the scan parameters do not match the target scan parameters.

6. The scanning inspection method according to claim 3, characterized in that, The step of determining whether the scanning parameters match the target scanning parameters corresponding to the scanning requirements includes: Determine the integrity of the region of interest in the scanned image; If the integrity does not meet the preset integrity requirements, it is determined that the scanning parameters do not match the target scanning parameters.

7. The scanning inspection method according to claim 1, characterized in that, The step of checking the scan images and / or scan parameters according to scan requirements associated with radiographic delivery includes: The spatial state of the support platform carrying the target object is determined based on the scanned image; Based on the spatial state, it is determined whether the working parameters of the support platform during the scanning process of the target object meet the target working parameters corresponding to the scanning requirements. If the working parameters do not match the target working parameters, it is determined that the scanned image has failed the inspection.

8. The scanning inspection method according to claim 1, characterized in that, The step of checking the scan images and / or scan parameters according to scan requirements associated with radiographic delivery includes: Determine the third scan region in the scanned image and / or the fourth scan region corresponding to the scan protocol including the scan parameters; Determine the fifth scanning region corresponding to the stated scanning requirements; If the third or fourth scanning region is inconsistent with the fifth scanning region, then the scanned image and / or the scanning parameters are determined to have failed the check.

9. A scanning and inspection apparatus, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the scanning inspection method according to any one of claims 1 to 8.

10. A radiation delivery system, characterized in that, The radiation delivery system includes: an imaging device, a scanning examination device, and a radiotherapy device; wherein... The imaging device is used to acquire a scanned image of the target object and / or scanned parameters corresponding to the scanned image; The scanning inspection apparatus is used to perform inspections on the scanned images and / or the scanned parameters according to scanning requirements associated with radiographic delivery; The radiotherapy apparatus is used to obtain a radiation delivery plan for the target object based on the scanned images examined, and to apply a radiation beam to the target object based on the radiation delivery plan.

Images