Heart scanning method and device for medical equipment and medical equipment

Abstract

The invention relates to the technical field of medical equipment, and discloses a heart scanning method for medical equipment, which comprises the following steps: acquiring a first heart rate based on the real-time heart rate of the heart; under the condition that the first heart rate is lower than the second heart rate, the estimated remaining time of heart scanning is obtained; wherein the second heart rate represents a reference heart rate before scanning; obtaining a predicted residual heat capacity corresponding to the predicted residual time; and when the predicted residual heat capacity is greater than the actual residual heat capacity, adjusting the current scanning parameter, so that the heat capacity corresponding to the adjusted scanning parameter within the predicted residual time is not greater than the actual residual heat capacity. By adjusting the scanning parameters, the scanning failure risk caused by heat capacity limitation is reduced, and it can be ensured that scanning cannot be interrupted due to insufficient heat capacity even under the condition that the scanning time is prolonged due to heart rate changes. The invention further discloses a heart scanning device for the medical equipment and the medical equipment.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, for example, to a heart scanning method and device for medical equipment, and medical equipment. Background Art

[0002] Cardiac CT (Computed Tomography) is a medical imaging technique that creates cross-sectional images of the heart and other internal structures by combining multiple X-ray images. Cardiac CT can be used to evaluate the structure and function of the heart, including its size, shape, and the condition of its chambers and blood vessels. It is used to diagnose various heart diseases, such as coronary artery disease, cardiomyopathy, cardiac tumors, valvular heart disease, and congenital heart disease. Because the state of the heart changes, especially when the heart is diseased, different CT scanning modes need to be set for different states of the heart.

[0003] In order to enable cardiac CT to be applied to different heart conditions, the related technology discloses a heart scanning method, including: determining the scanning duration under multiple heart scanning modes; and determining the target scanning mode of the heart scanning device based on the scanning duration corresponding to each heart scanning mode.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] Although the related art can set different scanning modes, the scanning modes are all determined based on the scanning duration. In actual application, fluctuations in heart rate may cause changes in the estimated scanning duration, making it difficult to determine a suitable scanning mode.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a heart scanning method and device for medical equipment, and medical equipment, which can complete scanning and imaging in the case of real-time heart rate fluctuations.

[0009] In some embodiments, the heart scanning method for medical equipment includes: obtaining a first heart rate based on the real-time heart rate of the heart; when the first heart rate is lower than a second heart rate, obtaining an estimated remaining time for the heart scan; wherein the second heart rate represents a reference heart rate before the scan; obtaining an estimated remaining thermal capacity corresponding to the estimated remaining time; and when the estimated remaining thermal capacity is greater than the actual remaining thermal capacity, adjusting the current scanning parameters so that the thermal capacity corresponding to the adjusted scanning parameters within the estimated remaining time is not greater than the actual remaining thermal capacity.

[0010] Optionally, based on the real-time heart rate of the heart, obtaining the first heart rate includes: identifying multiple R peaks of the electrocardiogram signal; calculating multiple real-time heart rates based on the time between two adjacent R peaks; and selecting the lowest real-time heart rate among the multiple real-time heart rates as the first heart rate.

[0011] Optionally, obtaining the estimated remaining time of the heart scan includes: obtaining the scanned phase range; and obtaining the estimated remaining time based on the total scan phase range, the scanned phase range and the first heart rate.

[0012] Optionally, the estimated remaining time is obtained according to the following formula:

[0013]

[0014] Wherein, T is the estimated remaining time, [PhaseBegin, PhaseEnd] is the total scanning phase range, T2 is the scanned time, T3 is the time corresponding to the data required to reconstruct a phase image, HR1 is the first heart rate, HR2 is the second heart rate, is the scanned phase range.

[0015] Optionally, the heart scanning method for medical equipment includes: acquiring tube voltage and tube current under current scanning parameters; and acquiring estimated remaining heat capacity based on the tube voltage and tube current under current scanning parameters and estimated remaining time.

[0016] Optionally, adjusting the current scanning parameters includes: acquiring tube current parameters and / or tube voltage parameters that need to be adjusted according to the actual remaining heat capacity and the estimated remaining time.

[0017] Optionally, the heart scanning method for medical equipment further includes: when the first heart rate is higher than or equal to the second heart rate, maintaining current scanning parameters to perform scanning and imaging.

[0018] Optionally, the reference heart rate includes one of the slowest heart rate, the average heart rate and the estimated heart rate based on the reference heart rate counted before the scan, and the reference heart rate is the slowest heart rate or the average heart rate.

[0019] In some embodiments, the cardiac scanning device for medical equipment includes: a processor and a memory storing program instructions, and the processor is configured to execute the cardiac scanning method for medical equipment as described above when running the program instructions.

[0020] In some embodiments, the medical device includes: a medical device body; and a cardiac scanning device for the medical device as described above, installed on the medical device body.

[0021] The heart scanning method and device for medical equipment and the medical equipment provided by the embodiments of the present disclosure can achieve the following technical effects:

[0022] In the embodiment of the present disclosure, the CT scanning parameters are dynamically adjusted by real-time monitoring of the patient's electrocardiogram signal to ensure that the scan can be successfully completed and high-quality images can be generated when the heart rate changes. First, the first heart rate during the scan is acquired based on the real-time heart rate of the heart. When the first heart rate is lower than the reference heart rate before the scan, the estimated remaining time of the heart scan is recalculated, and the estimated remaining thermal capacity is calculated based on the new heart rate and scanning parameters. If the estimated remaining thermal capacity exceeds the actual remaining thermal capacity of the device, the scanning parameters are adjusted to adapt to the new scanning conditions. In this way, the embodiment of the present disclosure reduces the risk of scan failure due to thermal capacity limitations by adjusting the scanning parameters, and can ensure that even if the scan time is extended due to changes in heart rate, the scan will not be interrupted due to insufficient thermal capacity.

[0023] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0025] Figure 1 is a schematic diagram of an implementation environment of a heart scanning method for a medical device according to an embodiment of the present disclosure;

[0026] Figure 2 is a schematic diagram of a heart scanning method for a medical device provided by an embodiment of the present disclosure;

[0027] Figure 3 is a schematic diagram of another cardiac scanning method for a medical device provided by an embodiment of the present disclosure;

[0028] Figure 4 is a schematic diagram of a corresponding relationship between an electrocardiogram signal and a tube current according to an embodiment of the present disclosure;

[0029] Figure 5 is a schematic diagram of another cardiac scanning method for a medical device provided by an embodiment of the present disclosure;

[0030] Figure 6 It is a schematic diagram of a heart scanning device for medical equipment provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0032] The terms "first", "second", etc. in the technical solutions described in the embodiments of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0033] Unless otherwise stated, the term "plurality" means two or more.

[0034] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0035] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0036] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0037] Currently, cardiac CT scans are based on the patient's ECG signals recorded before the scan, the time corresponding to the slowest heart rate is calculated, and redundancy is added to estimate the exposure time required for the scan. However, during the actual scan, the state of the heart changes in real time, the heart rate fluctuates, and there is a situation where the actual heart rate is lower than the slowest heart rate counted before the scan. This will cause the actual required scan exposure time to be greater than the estimated scan exposure time before the scan. If the actual required scan exposure time exceeds the longest exposure time supported by the system, no X-rays will be generated and the scan will fail. In order to avoid the situation where the scan fails due to exceeding the estimated exposure time required for the scan, if the heart rate changes during the scan, the scan exposure time needs to be recalculated and the scan parameters adjusted to ensure that the scan can be completed normally.

[0038] Figure 1 FIG. 1 is a schematic diagram of an implementation environment of a heart scanning method for medical equipment according to an embodiment of the present disclosure. Figure 1 As shown, the implementation environment may include a CT device 10 and an electrocardiogram device 20 , and the CT device includes a high voltage system 100 and a processor 600 .

[0039] In the CT device 10, the high voltage system 100 is used to generate high voltage, thereby providing energy for the tube to emit X-rays. The high voltage system 100 converts the low voltage power supply into high voltage and provides it to the cathode and anode of the tube. The high voltage accelerates the electrons from the cathode to the anode, generating X-rays on the anode target. The efficiency and stability of the high voltage system directly affect the intensity and quality of the X-rays. Among them, the function of the high voltage generator is to provide the heating current of the X-ray tube filament and the high voltage of the positive and negative poles of the X-ray tube. The maximum heating current is the filament heating current, which determines the number of X-rays per unit time; the high voltage is the high voltage of the positive and negative poles, which determines the penetration ability of the X-rays. The heat capacity of the tube anode target determines the instantaneous load capacity, which is measured in MHU. The larger the heat capacity of the tube, the stronger the X-ray output capacity, so there is a limit on the maximum exposure time.

[0040] The electrocardiogram device 20 monitors the patient's electrocardiogram signal in real time, and the processor 600 dynamically adjusts the scanning parameters of the high-voltage system 100 according to the electrocardiogram signal, so as to complete the scanning and imaging under the condition of real-time heart rate fluctuation.

[0041] Combination Figure 2 As shown, the embodiment of the present disclosure provides a heart scanning method for a medical device, comprising:

[0042] S201: The processor obtains a first heart rate based on the real-time heart rate.

[0043] S202: When the first heart rate is lower than the second heart rate, the processor obtains an estimated remaining time of a heart scan, wherein the second heart rate represents a reference heart rate before the scan.

[0044] S203: The processor obtains an estimated remaining thermal capacity corresponding to the estimated remaining time.

[0045] S204: When the estimated remaining heat capacity is greater than the actual remaining heat capacity, the processor adjusts the current scanning parameters so that the heat capacity corresponding to the adjusted scanning parameters is not greater than the actual remaining heat capacity within the estimated remaining time.

[0046] The heart scanning method of the medical device provided by the embodiment of the present disclosure is adopted, and the CT scanning parameters are dynamically adjusted by real-time monitoring of the patient's electrocardiogram signal to ensure that the scan can be successfully completed and high-quality images can be generated when the heart rate changes. First, the first heart rate in the scanning process is obtained based on the real-time heart rate of the heart. When the first heart rate is lower than the reference heart rate before the scan, the estimated remaining time of the heart scan is recalculated, and the estimated remaining thermal capacity is calculated based on the new heart rate and scanning parameters. If the estimated remaining thermal capacity exceeds the actual remaining thermal capacity of the device, the scanning parameters are adjusted to adapt to the new scanning conditions. In this way, the embodiment of the present disclosure reduces the risk of scanning failure caused by thermal capacity limitation by adjusting the scanning parameters, and can ensure that even if the scanning time is extended due to changes in heart rate, the scan will not be interrupted due to insufficient thermal capacity. That is to say, the embodiment of the present application controls the scanning parameters based on the real-time heart rate during the scanning process, so as to complete the scan as the most basic control requirement, and take into account the image quality. In general, the larger the tube current, the better the image quality.

[0047] Optionally, based on the real-time heart rate of the heart, obtaining the first heart rate includes: identifying multiple R peaks of the electrocardiogram signal; calculating multiple real-time heart rates based on the time between two adjacent R peaks; and selecting the lowest real-time heart rate among the multiple real-time heart rates as the first heart rate.

[0048] In the disclosed embodiment, an electrocardiogram device is used to collect the patient's electrocardiogram signal in real time. The R peak of the electrocardiogram signal is the beginning of ventricular depolarization, which usually marks the beginning of the cardiac cycle. The electrocardiograph analyzes the electrocardiogram signal and automatically identifies the R peak of each cardiac cycle. By measuring the time between two adjacent R peaks (interval time t), the duration of each cardiac cycle can be calculated. The heart rate is the reciprocal of this time, that is, HR=60 / t. During the cardiac scan, the system continuously monitors and calculates the heart rate of each cardiac cycle. Among the continuously monitored heart rates, the lowest heart rate is selected as the first heart rate. By monitoring the heart rate in real time and selecting the slowest heart rate, the disclosed embodiment can more accurately estimate the thermal capacity required during the scan, thereby avoiding scan failures due to insufficient thermal capacity.

[0049] Optionally, obtaining the estimated remaining time of the heart scan includes: obtaining the scanned phase range; and obtaining the estimated remaining time based on the total scan phase range, the scanned phase range and the first heart rate.

[0050] In the disclosed embodiment, if the heart rate changes during the heart scan, a longer exposure time may be required. When the actual remaining thermal capacity cannot meet the original scanning conditions, the scanning parameters need to be adjusted according to the estimated remaining time to ensure that the scan is completed normally and the image is created. By real-time monitoring of the heart rate and adjusting the estimated remaining time according to the total scanning phase range and the scanned phase range, it is possible to adapt to the patient's heart rate changes during the scan and ensure real-time optimization of the scanning parameters.

[0051] Optionally, the estimated remaining time is obtained according to the following formula:

[0052]

[0053] Wherein, T is the estimated remaining time, [PhaseBegin, PhaseEnd] is the scanning phase range, T2 is the scanned time, T3 is the time corresponding to the data required to reconstruct a phase image, HR1 is the first heart rate, HR2 is the second heart rate, is the scanned phase range.

[0054] In the disclosed embodiment, a decrease in heart rate may require a longer exposure time, thereby exceeding the maximum exposure time supported by the system. By recalculating the estimated remaining time, the scanning parameters can be adjusted in time to avoid scanning failures caused by exceeding the thermal capacity limit.

[0055] Alternatively, the estimated remaining heat capacity may be obtained according to the following formula:

[0056] HU=kV×mA×T×1.41

[0057] Where HU is the estimated remaining heat capacity, kV is the tube voltage under the current scanning parameters, mA is the tube current under the current scanning parameters, and T is the estimated remaining time.

[0058] In the disclosed embodiment, the change of heart rate is identified. When the slowest heart rate during the release process is lower than the slowest heart rate used to estimate the thermal capacity required for the scan before the scan, the new slowest heart rate can be used to estimate the thermal capacity required for the remaining scan portion, and confirm whether the estimated thermal capacity of the remaining scan portion exceeds the remaining thermal capacity of the system. If it does not exceed the remaining thermal capacity of the system, the scan is performed normally. If it exceeds the remaining thermal capacity of the system, the system cannot meet the needs of the current scanning conditions. According to the remaining thermal capacity and the remaining time required for scanning, the scanning parameters are automatically adjusted to ensure that the scan is completed normally and the image is correctly built.

[0059] Optionally, adjusting the current scanning parameters includes: acquiring tube current parameters and / or tube voltage parameters that need to be adjusted according to the actual remaining heat capacity and the estimated remaining time.

[0060] Combination Figure 3 As shown, the embodiment of the present disclosure provides another cardiac scanning method for a medical device, comprising:

[0061] S301: The processor obtains a first heart rate based on the real-time heart rate.

[0062] S302: When the first heart rate is lower than the second heart rate, the processor obtains an estimated remaining time of the heart scan; wherein the second heart rate represents a reference heart rate before the scan.

[0063] S303: The processor obtains an estimated remaining thermal capacity corresponding to the estimated remaining time.

[0064] S304, when the estimated remaining heat capacity is greater than the actual remaining heat capacity, the processor obtains the tube current parameter and / or tube voltage parameter that need to be adjusted according to the actual remaining heat capacity and the estimated remaining time, so that the heat capacity corresponding to the adjusted scanning parameter within the estimated remaining time is not greater than the actual remaining heat capacity.

[0065] In the disclosed embodiment, by ensuring that the actual remaining heat capacity matches the required heat capacity, scanning interruption due to insufficient heat capacity is avoided. In addition, under the premise of ensuring image quality, the tube current is reduced as much as possible, which can also reduce the radiation dose of the patient. Prioritizing the reduction of the tube current mainly affects the noise level of the image, which can be reduced by post-image post-processing and other methods. Other parameters such as the tube voltage can also be adjusted.

[0066] In practical applications, the corresponding relationship between the ECG signal and the tube current during scanning is as follows: Figure 4 shown.

[0067] The heart scan is 120 kV, 500 mA, the slowest heart rate before the scan is 80, the time required to reconstruct a phase image is 0.5 seconds, and the phase range of the scan is [0%, 400%]. It is estimated that it will take 3.5 seconds to complete the scan. The calculation process is as follows:

[0068] 60 / 80×(400%-0%)+0.5=3.5

[0069] Then, the calculated preset heat capacity before scanning is:

[0070] 120×500×3.5×1.41=0.2961MHU

[0071] It can be seen that the remaining heat capacity calculated before scanning is 0.3MHU, so scanning can be performed. However, after scanning for 1.75s, a new slowest heart rate of 60 is detected, and the remaining time required for scanning is calculated to be 2.25 seconds. The calculation process is as follows:

[0072] 60 / 60×[(400%-0%)-(1.75-0.5 / 2)×80 / 60]+0.5 / 2=2.25

[0073] Thus, if the scan is continued according to the original scan parameters, the estimated residual heat capacity is 0.19035 MHU, and the calculation process is as follows:

[0074] 120×500×2.25×1.41=0.19035MHU

[0075] The actual residual heat capacity is 0.152MHU, and the calculation process is as follows:

[0076] 0.3-0.2961 / 2=0.152MHU

[0077] The estimated residual heat capacity exceeds the actual residual heat capacity, and the tube current needs to be adjusted to 399.2645 mA. The calculation process is as follows:

[0078] 152000 / (120×2.25×1.41)=399.2645

[0079] In this way, the scanning can be continued by adjusting and reducing the tube current, so that the scanning will not be terminated unexpectedly due to insufficient heat capacity.

[0080] Optionally, the heart scanning method for medical equipment further includes: when the first heart rate is higher than or equal to the second heart rate, maintaining current scanning parameters to perform scanning and imaging.

[0081] Combination Figure 5 As shown, the embodiment of the present disclosure provides a heart scanning method for a medical device, comprising:

[0082] S501: The processor obtains a first heart rate based on the real-time heart rate.

[0083] S502: When the first heart rate is lower than the second heart rate, the processor obtains an estimated remaining time of a heart scan; wherein the second heart rate represents a reference heart rate before the scan.

[0084] S503: The processor obtains an estimated remaining thermal capacity corresponding to the estimated remaining time.

[0085] S504: When the estimated remaining heat capacity is greater than the actual remaining heat capacity, the processor adjusts the current scanning parameter so that the heat capacity corresponding to the adjusted scanning parameter is not greater than the actual remaining heat capacity within the estimated remaining time.

[0086] S505: When the first heart rate is higher than or equal to the second heart rate, the processor maintains current scanning parameters to perform scanning and imaging.

[0087] In the disclosed embodiment, by real-time monitoring of the patient's ECG signal to dynamically adjust the CT scanning parameters, the risk of scanning failure due to thermal capacity limitation is reduced, and it can be ensured that even if the scanning time is prolonged due to changes in heart rate, the scan will not be interrupted due to insufficient thermal capacity. In addition, the first heart rate monitored in real time is compared with the pre-set second heart rate. If the first heart rate is higher than or equal to the second heart rate, it means that the patient's heart rate has not slowed down significantly. At this time, the expected thermal capacity is sufficient to meet the scanning requirements. The system will maintain the current scanning parameters and continue scanning and imaging to ensure that the scan can be successfully completed and high-quality images can be generated. The disclosed embodiment can adapt to the patient's heart rate changes during the scanning process, and can ensure the smooth progress of the scan regardless of whether the heart rate is accelerated or slowed down. Scan failures and repeated scans caused by changes in heart rate are reduced.

[0088] Optionally, the reference heart rate includes one of the slowest heart rate, the average heart rate and the estimated heart rate based on the reference heart rate counted before the scan, and the reference heart rate is the slowest heart rate or the average heart rate.

[0089] Exemplarily, the disclosed embodiment monitors the heart rate in real time through the ECG signal and selects the slowest heart rate. In the continuously monitored data, the heart rate value corresponding to the longest RR interval, that is, the slowest heart rate, is screened out as the reference heart rate. By selecting the slowest heart rate, the thermal capacity required during the scan can be more accurately estimated, thereby avoiding scan failures due to insufficient thermal capacity. Moreover, this reference heart rate is crucial for optimizing cardiac CT scan parameters, which helps to improve imaging quality, reduce motion artifacts, and reduce radiation dose.

[0090] Exemplarily, the disclosed embodiment monitors the heart rate in real time through the ECG signal, and obtains the estimated heart rate based on the reference heart rate. If the reference heart rate is the slowest heart rate, the estimated heart rate can be 5%-30% greater than the slowest heart rate, for example, if the slowest heart rate is 60 beats / minute, the estimated heart rate can be 65 beats / minute or 75 beats / minute. If the reference heart rate is the average heart rate, the estimated heart rate can be 5%-30% less than the average heart rate, for example, if the average heart rate is 70 beats / minute, the estimated heart rate can be 65 beats / minute or 55 beats / minute.

[0091] Combination Figure 6As shown, the embodiment of the present disclosure provides a heart scanning device 60 of a medical device, including a processor (processor) 600 and a memory (memory) 601. Optionally, the device 60 may also include a communication interface (Communication Interface) 602 and a bus 603. Among them, the processor 600, the communication interface 602, and the memory 601 can communicate with each other through the bus 603. The communication interface 602 can be used for information transmission. The processor 600 can call the logic instructions in the memory 601 to execute the heart scanning method of the medical device of the above embodiment.

[0092] In addition, the logic instructions in the memory 601 described above can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0093] The memory 601 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 600 executes the function application and data processing by running the program instructions / modules stored in the memory 601, that is, the heart scanning method of the medical device in the above embodiment is implemented.

[0094] The memory 601 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 601 may include a high-speed random access memory and may also include a non-volatile memory.

[0095] The disclosed embodiments provide a medical device, including: a medical device body, and a heart scanning device of the medical device described above. The heart scanning device of the medical device is installed on the medical device body. The installation relationship described here is not limited to placement inside the medical device body, but also includes installation connections with other components of the medical device, including but not limited to physical connections, electrical connections, or signal transmission connections. It can be understood by those skilled in the art that the heart scanning device of the medical device can be adapted to a feasible medical device body, thereby realizing other feasible embodiments.

[0096] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0097] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0098] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0099] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0100] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A cardiac scanning method for medical equipment, characterized in that: include: Based on the real-time heart rate of the heart, obtain the first heart rate; When the first heart rate is lower than the second heart rate, obtaining the estimated remaining time of the heart scan; wherein the second heart rate represents the reference heart rate before the scan; Obtaining an estimated remaining thermal capacity corresponding to the estimated remaining time; When the estimated remaining heat capacity is greater than the actual remaining heat capacity, the current scanning parameters are adjusted so that the heat capacity corresponding to the adjusted scanning parameters is not greater than the actual remaining heat capacity within the estimated remaining time.

2. The heart scanning method according to claim 1, characterized in that: Based on the real-time heart rate of the heart, the first heart rate is obtained, including: Identify multiple R peaks of ECG signals; According to the time between two adjacent R peaks, multiple real-time heart rates are calculated; The lowest real-time heart rate among multiple real-time heart rates is selected as the first heart rate.

3. The heart scanning method according to claim 1, characterized in that: Get the estimated time remaining for your heart scan, including: Get the scanned phase range; The estimated remaining time is obtained based on the total scanning phase range, the scanned phase range and the first heart rate.

4. The heart scanning method according to claim 3, characterized in that: The estimated remaining time is obtained according to the following formula: Wherein, T is the estimated remaining time, [PhaseBegin, PhaseEnd] is the total scanning phase range, T2 is the scanned time, T3 is the time corresponding to the data required to reconstruct a phase image, HR1 is the first heart rate, HR2 is the second heart rate, is the scanned phase range.

5. The heart scanning method according to claim 1, characterized in that: Get the tube voltage and tube current under the current scanning parameters; The estimated remaining heat capacity is obtained based on the tube voltage and tube current under the current scanning parameters and the estimated remaining time.

6. The heart scanning method according to any one of claims 1 to 5, characterized in that: Adjust the current scan parameters, including: According to the actual remaining heat capacity and the estimated remaining time, the tube current parameter and / or tube voltage parameter that need to be adjusted are obtained.

7. The heart scanning method according to any one of claims 1 to 5, characterized in that: Also includes: When the first heart rate is higher than or equal to the second heart rate, the current scanning parameters are maintained to perform scanning imaging.

8. The heart scanning method according to any one of claims 1 to 5, characterized in that: The reference heart rate includes one of the slowest heart rate, the average heart rate and the estimated heart rate based on the reference heart rate counted before the scan. The reference heart rate is the slowest heart rate or the average heart rate.

9. A cardiac scanning device for medical equipment, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the cardiac scanning method for a medical device according to any one of claims 1 to 8 when running the program instructions.

10. A medical device, characterized in that: include: Medical device body; The heart scanning device for medical equipment as claimed in claim 9 is installed on the medical equipment body.

Images