Contrast agent residual dose detection method and device, computer equipment and storage medium

Abstract

The invention belongs to the technical field of contrast agent detection, and discloses a contrast agent residual dose detection method and device, computer equipment and a storage medium, the method is applied to a specific detection system, the method comprises an injector, a driving device and a detection device, linkage is achieved through a lead screw, and the operation process comprises the steps of starting contrast agent liquid injection, judging whether the injector is linked with the detection device or not, and if so, accurately measuring a first updated residual dose in a small range by the detection device; and if not, the preset algorithm calculates a large-range approximate second updated residual dose, and the method avoids the defects of manual operation estimation and improves the operation efficiency. A doctor performs accurate injection according to real-time data, reduces operation interruption, improves operation efficiency, combines small-range accuracy and large-range rough calculation, can ensure accurate use of contrast agents, avoids waste, reduces medical cost, can ensure operation effect and patient safety, and effectively solves many problems of existing contrast agent dose management.

Description

Technical Field

[0001] The present invention relates to the technical field of contrast agent detection, and in particular to a contrast agent residual dose detection method, device, computer equipment and storage medium. Background Art

[0002] In the modern medical field, contrast agents play an indispensable role in a variety of diagnostic and therapeutic procedures, especially in vascular interventional surgery and various imaging examinations (such as X-ray angiography, CT enhanced scanning, MRI enhanced examination, etc.). Contrast agents are crucial for clearly displaying the morphology and pathological conditions of blood vessels, organs and other body structures. However, existing technologies have many significant defects in contrast agent dosage management.

[0003] At present, the management of contrast agent dosage mainly relies on manual operation and estimation. The manual operation method is extremely inefficient. Medical staff need to rely on experience to judge the amount of contrast agent to be used in busy medical work. This process is time-consuming and laborious, and due to the limitations of human judgment, errors are prone to occur. On the one hand, inaccurate estimation leads to waste of contrast agent, which increases medical costs and also puts certain pressure on the environment. On the other hand, what is more serious is that insufficient contrast agent dosage may occur. During the operation, if the remaining dose of contrast agent cannot be accurately predicted, when the remaining dose is less than the preset amount of the injection, it will directly affect the effect of the operation, making it impossible for the doctor to clearly observe the lesion site, which may cause the operation to be unable to proceed normally and have to be interrupted to deal with the problem of insufficient contrast agent. This not only greatly reduces the efficiency of the operation, but also may bring additional risks and pain to the patient. In addition, since the remaining dose cannot be determined, medical staff have no idea when to replenish the liquid and how much liquid to prepare, which makes the operation process full of uncertainty, which is not conducive to the smooth progress of the operation and the safety of the patient. Summary of the invention

[0004] The main purpose of the present invention is to provide a method, device, computer equipment and storage medium for detecting the remaining dose of contrast agent, aiming to solve the technical problem that the existing contrast agent dose management mainly relies on manual operation and estimation, resulting in low operating efficiency and surgical efficiency, affecting surgical results and increasing medical costs.

[0005] In order to achieve the above-mentioned invention object, the first aspect of the present invention provides a contrast agent remaining dose detection method, which is applied to a contrast agent remaining dose detection system, wherein the detection system comprises a syringe, a driving device and a detection device, wherein the driving device is respectively connected to the syringe and the detection device through a screw rod, and when the driving device drives the screw rod to push the syringe to a specified position, the syringe and the detection device move in linkage, and the syringe is used to contain a contrast agent solution, and comprises:

[0006] Start contrast solution injection;

[0007] Determining whether the syringe is linked with the detection device;

[0008] If yes, then measuring the remaining dose of the contrast solution in the syringe based on the detection device to obtain a first updated remaining dose;

[0009] If not, the remaining dosage of the contrast solution in the syringe is calculated based on a first preset algorithm in the detection system to obtain a second updated remaining dosage.

[0010] Furthermore, the step of measuring the remaining dose of the contrast solution in the syringe based on the detection device includes:

[0011] Acquire an initial reference value of the detection device in the initial state of the syringe;

[0012] Based on the initial reference value, the endpoint reference value of the detection device in the endpoint state of the syringe is obtained through the linkage movement of the detection device and the syringe;

[0013] Based on the range from the initial reference value to the end reference value, the remaining dose of the contrast liquid is measured.

[0014] Furthermore, the step of obtaining a first updated remaining dose based on measuring the remaining dose of the contrast solution in the syringe by the detection device comprises:

[0015] Obtaining a current output value of a circuit connected to the detection device;

[0016] Based on the initial reference value and the endpoint reference value, a linear relationship equation for the remaining dose is obtained;

[0017] The first updated remaining dose is obtained based on the current output value and the remaining dose linear relationship.

[0018] Furthermore, the step of calculating the remaining dose of the contrast solution in the syringe based on the first preset algorithm in the detection system to obtain a second updated remaining dose includes:

[0019] Acquire a first time and a first speed at which the contrast liquid begins to be consumed;

[0020] Acquire a second time for finishing consuming the contrast liquid;

[0021] Calculate a second consumed dose according to the first speed, the second time and the first time;

[0022] The second updated remaining dose is obtained based on the difference between the original dose of the contrast liquid and the second consumed dose.

[0023] Furthermore, after the step of obtaining the first updated remaining dose, the following steps are included:

[0024] replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain a current mixed contrast solution;

[0025] Or after the step of obtaining the second updated remaining dose, the method further comprises:

[0026] The contrast solution to be replenished is added to the syringe based on the second updated remaining dose to obtain a current mixed contrast solution.

[0027] Furthermore, the step of replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain the current mixed contrast solution includes:

[0028] Obtaining a first supplementary dose of the contrast solution to be supplemented;

[0029] Determine whether the automatic replenishment process is stopped midway;

[0030] If not, obtaining a current mixed contrast agent solution of a first supplementary remaining dose based on the sum of the first updated remaining dose and the first supplementary dose;

[0031] If yes, obtain the first replenishment time and the first replenishment speed for stopping replenishment;

[0032] Obtaining a replenished dosage based on the product of the first replenishment time and the first replenishment speed;

[0033] A second supplementary remaining dose of the current mixed contrast agent solution is obtained according to the sum of the first updated remaining dose and the supplemented dose.

[0034] Furthermore, the step of replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain the current mixed contrast solution includes:

[0035] Obtaining a first replenishment duration and a first replenishment speed for a user to manually replenish the contrast liquid to be replenished;

[0036] obtaining a first tonic dosage based on the product of the first tonic duration and the first tonic speed;

[0037] A third supplementary remaining dose of the current mixed contrast agent solution is obtained according to the sum of the first updated remaining dose and the first supplementary dose.

[0038] The second aspect of the present application further provides a contrast agent remaining dose detection device, which is applied to a contrast agent remaining dose detection system, wherein the detection system comprises a syringe, a driving device and a detection device, wherein the driving device is respectively connected to the syringe and the detection device through a screw rod, and when the driving device drives the screw rod to push the syringe to a specified position, the syringe and the detection device move in linkage, and the syringe is used to contain a contrast agent solution, and comprises:

[0039] A start module, used to start contrast solution injection;

[0040] A judging module, used for judging whether the syringe is linked with the detection device;

[0041] a measuring module, configured to measure the remaining dose of the contrast solution in the syringe based on the detection device to obtain a first updated remaining dose;

[0042] The calculation module is used to calculate the remaining dosage of the contrast solution in the syringe based on the first preset algorithm in the detection system to obtain a second updated remaining dosage if no.

[0043] The third aspect of the present application further proposes a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the method described in any one of the above embodiments are implemented.

[0044] A fourth aspect of the present application further proposes a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in any one of the above embodiments are implemented.

[0045] Beneficial effects:

[0046] A method for detecting a remaining dose of contrast agent of the present invention is applied to a contrast agent remaining dose detection system, wherein the detection system comprises a syringe, a driving device and a detection device, wherein the driving device is respectively connected to the syringe and the detection device via a screw rod, and when the driving device drives the screw rod to push the syringe to move to a specified position, the syringe and the detection device move in linkage, wherein the syringe is used to contain contrast liquid, and the method comprises: starting injection of contrast liquid; determining whether the syringe is linked with the detection device; if so, measuring the remaining dose of the contrast liquid in the syringe based on the detection device to obtain a first updated remaining dose; if not, calculating the remaining dose of the contrast liquid in the syringe based on a first preset algorithm in the detection system to obtain a second updated remaining dose. Therefore, the detection device can perform accurate detection in a small range. When the remaining dose is within its range reference position, the first updated remaining dose can be accurately measured. When it exceeds the range of the detection device, the second updated remaining dose is calculated by a preset algorithm. Although it is an approximate calculation, it can provide an effective reference in a large range, avoiding the drawbacks of manual operation and estimation, and improving operational efficiency. Doctors can accurately control the injection of contrast agents based on real-time data, reduce surgical interruptions caused by dosage issues, and improve surgical efficiency. At the same time, the combination of accurate and approximate calculations can prevent waste of contrast agents, reduce medical costs, and ensure surgical results and patient safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A flowchart of a method for detecting a remaining dose of a contrast agent according to an embodiment of the present invention;

[0048] Figure 2 A schematic block diagram of a contrast agent remaining dosage detection device according to an embodiment of the present invention;

[0049] Figure 3 A schematic block diagram of the structure of a computer device according to an embodiment of the present invention;

[0050] Figure 4 It is a schematic diagram of the structure of a detection system according to an embodiment of the present invention.

[0051] in:

[0052] 1. Injector; 2. Driving device; 3. Detection device; 4. Screw rod;

[0053] 10. Device for detecting residual dose of contrast agent;

[0054] 11. Startup module; 12. Judgment module; 13. Measurement module; 14. Calculation module.

[0055] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0058] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0060] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "a", "an", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of features, integers, steps, operations, elements, modules, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, modules, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any module and all combinations of one or more associated listed items.

[0061] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as herein.

[0062] Reference Figure 1 , Figure 4 The present embodiment provides a contrast agent remaining dose detection method, which is applied to a contrast agent remaining dose detection system, wherein the detection system comprises a syringe 1, a drive device 2 and a detection device 3, wherein the drive device 2 is connected to the syringe 1 and the detection device 3 through a screw rod 4, respectively. When the drive device 2 drives the screw rod 4 to push the syringe 1 to a specified position, the syringe 1 and the detection device 3 move in linkage, and the syringe 1 is used to contain a contrast agent solution, and comprises:

[0063] S1: Start contrast solution injection;

[0064] S2: Determine whether the syringe 1 is linked with the detection device 3;

[0065] S3: If yes, then the remaining dose of the contrast solution in the syringe 1 is measured based on the detection device 3 to obtain a first updated remaining dose;

[0066] S4: If not, the remaining dosage of the contrast solution in the syringe 1 is calculated based on the first preset algorithm in the detection system to obtain a second updated remaining dosage.

[0067] In the above-mentioned embodiment, the contrast agent remaining dosage detection method is mainly applied to the contrast agent remaining dosage detection system, wherein the syringe 1 is a key component in the whole system for containing the contrast agent solution, which has a certain capacity specification, similar to the common medical syringe, but has a special connection relationship with the driving device 2 and the detection device 3. The driving device 2 usually uses a motor as a power source, and its main function is to convert electrical energy into mechanical energy, thereby generating precise rotational motion. The lead screw 4 is a mechanical transmission component, one end of which is connected to the drive device 2. When the drive device 2 rotates, the lead screw 4 will rotate accordingly, and its rotational motion can be converted into linear motion, thereby pushing the piston of the syringe 1 to move, and realizing the pushing or extraction operation of the contrast agent; the detection device 3 generally uses a sliding rheostat, and its input value can change according to the position change of the slide. It is connected to the other end of the lead screw 4. When the lead screw 4 pushes the syringe 1 to move, the displacement of the lead screw 4 will synchronously drive the slide of the detection device 3 to move, so that the volume change of the contrast agent in the syringe 1 can be accurately reflected in the input value change of the detection device 3 through the transmission of the lead screw 4, and then establish a corresponding relationship between the remaining dose of the contrast agent and the input value of the detection device 3. For example, in angiography surgery, when the drive device 2 drives the lead screw 4 to push the syringe 1 to inject the contrast agent into the blood vessel, the volume of the contrast agent in the syringe 1 decreases, the lead screw 4 drives the slide of the detection device 3 to move, and the input value changes, thereby providing a physical basis for subsequent dose detection, so that medical staff can grasp the remaining situation of the contrast agent in real time to ensure the smooth progress of the operation.

[0068] For steps S1-S2, the contrast solution injection is first started. For example, when performing a cardiac angiography operation, the medical staff prepares a syringe 1 filled with contrast solution and a connected drive device 2 and a detection device 3, and starts the drive device 2 through the operation control interface. The drive device 2 starts to drive the screw 4 to move, thereby pushing the piston of the syringe 1, and the contrast solution starts to be pushed out of the syringe 1 and enters the blood vessels and other parts of the patient's body. The contrast agent starts to flow in the blood vessels. This process is the start of the contrast solution injection. Then, step S2 is performed to determine whether the syringe 1 is linked with the detection device 3. In this process, the system monitors the remaining dosage of the contrast solution in the syringe 1 through a software algorithm. For example, during the injection process, the system calculates the remaining dosage based on the initial injection amount of the contrast agent, the injection time, and the preset flow rate and other parameters. When the remaining dosage of the contrast solution in the syringe 1 reaches the maximum standard value of the detection device 3, the syringe 1 is linked with the detection device 3, so that the remaining dosage of the contrast solution is measured by the detection device 3.

[0069] For step S3, when performing chest radiography, after it is determined that the syringe 1 and the detection device 3 are linked, the remaining dose is measured based on the detection device 3. First, the current output value is obtained through the monitoring module of the detection device 3 connected to the circuit. It is assumed that the resistance value detected at this time is 30Ω. It is known that the initial reference value is 0Ω (when the syringe 1 is empty), and the end point reference value is 50Ω (corresponding to a certain amount of contrast agent remaining). According to the formula y=kx (the resistance value variation range, the contrast agent volume variation range), k=50 / 10=5 (assuming that it corresponds to a 10ml contrast agent volume change), and the linear relationship is y=5x. Substituting the current resistance value of 30Ω, 30=5x is obtained, and x=6ml is obtained, that is, the corresponding contrast agent volume change at this time. If the initial total amount of contrast agent is 20ml, then the first updated remaining dose is 20-6=14ml.

[0070] Regarding step S4, when it is determined that the remaining dose of the contrast solution in the syringe 1 is not within the reference position of the measuring range of the detection device 3, the remaining dose is calculated based on the first preset algorithm in the detection system. For example, when performing an enhanced CT scan of the abdomen, the system first obtains the first time when the contrast agent solution is consumed. Assuming that at the moment when the contrast agent injection device is started to inject the contrast agent, the system records the time at this time as the first time, set to 0 seconds. At the same time, the speed of contrast agent consumption, that is, the first speed, is obtained through a speed sensor installed on the drive device 2 or the screw 4. Assuming that the measured first speed is 3 ml / s, and the system knows from previous measurements or calculations that the second initial remaining dose of the contrast agent solution in the syringe 1 at this time is assumed to be 30 ml. Then, based on the first speed, the system continues to monitor until the operation of consuming the contrast agent is completed, and records the time point when the consumption ends as the second time. For example, if the injection lasts for 8 seconds, then the second time is 8 seconds. Then, according to the formula "consumed dose = speed × time difference", the second consumed dose is calculated to be 3 ml / s × (8-0) s = 24 ml. Finally, the second initial remaining dose 30 ml is subtracted from the second consumed dose 24 ml to obtain the second updated remaining dose of 30-24 = 6 ml.

[0071] In this embodiment, the injection of contrast solution is started; it is determined whether the syringe 1 is linked with the detection device 3; if so, the remaining dose of the contrast solution in the syringe 1 is measured based on the detection device 3 to obtain a first updated remaining dose; if not, the remaining dose of the contrast solution in the syringe 1 is calculated based on the first preset algorithm in the detection system to obtain a second updated remaining dose. Therefore, the detection device can accurately detect in a small range. When the remaining dose is within its range reference position, the first updated remaining dose can be accurately measured. When it exceeds the range of the detection device, the second updated remaining dose is calculated by the preset algorithm. Although it is a rough calculation, it can provide an effective reference in a large range, avoid the disadvantages of manual operation and estimation, and improve operation efficiency. Doctors can accurately control contrast agent injection according to real-time data, reduce surgical interruptions caused by dosage problems, and improve surgical efficiency. At the same time, accurate and rough calculations are combined to prevent waste of contrast agents, reduce medical costs, and ensure surgical effects and patient safety.

[0072] Reference Figure 4 In one embodiment, the step of measuring the remaining dose of the contrast solution in the syringe based on the detection device comprises:

[0073] Acquire an initial reference value of the detection device 3 in the initial state of the syringe 1;

[0074] Based on the initial reference value, the endpoint reference value of the detection device 3 at the endpoint state of the syringe 1 is obtained through the linkage movement of the detection device 3 and the syringe 1;

[0075] Based on the range from the initial reference value to the end reference value, the remaining dose of the contrast liquid is measured.

[0076] In the above embodiment, before preparing for the contrast agent injection operation, it is necessary to first obtain the initial reference value of the detection device 3 in the initial state of the syringe 1. At this time, the syringe 1 is empty and no contrast solution is injected. The detection device 3 (such as a sliding rheostat) is in the initial state, and the resistance value of the connected circuit is 0Ω, which is the initial reference value. At the same time, the corresponding contrast solution measurement value is 0ml. Then, start to inject a preset volume of contrast solution into the syringe 1, such as injecting 10ml of contrast solution. During the injection process, since the drive device 2 is linked with the syringe 1 and the detection device 3 through the screw 4, as the contrast solution is injected, the piston in the syringe 1 moves, and the screw 4 drives the slide of the detection device 3 to move synchronously. When the 10ml contrast solution is completely injected, the resistance value of the detection device 3 changes. At this time, the measured resistance value is 50Ω, which is the endpoint reference value. The corresponding first measurement value is 10ml. In the subsequent During the use of contrast agent, the system can measure the remaining dose of contrast solution according to the change of the resistance value of the detection device 3 in the range of 0Ω to 50Ω. For example, when the resistance value is detected to be 25Ω, the remaining dose of the contrast solution at this time can be calculated based on the pre-established correspondence between the resistance value and the contrast agent volume. By accurately obtaining the initial reference value and the endpoint reference value, the correspondence between the resistance value of the detection device 3 and the contrast agent volume is established, which lays a solid foundation for the subsequent accurate measurement of the remaining dose of the contrast solution. During the contrast operation, the remaining situation of the contrast agent can be accurately grasped in real time. The doctor can reasonably arrange the injection plan according to the remaining dose to avoid affecting the operation or examination effect due to insufficient contrast agent. At the same time, it can also prevent the risks brought by excessive use of contrast agent, such as reducing potential damage to the patient's kidneys and other organs, improving the safety and effectiveness of the use of contrast agents, and helping to improve the quality and efficiency of overall medical operations.

[0077] Reference Figure 4 In one embodiment, the step of measuring the remaining dose of the contrast solution based on the range from the initial reference value to the end reference value comprises:

[0078] When the output value of the detection device reaches the endpoint reference value, a first measurement value of the contrast solution is obtained and a first alarm is generated;

[0079] When the output value of the detection device is the initial reference value, a second measurement value of the contrast solution is obtained and a second alarm prompt is generated.

[0080] In the above embodiment, during the operation of the contrast agent injection system, the detection device (such as a sliding rheostat) continuously monitors the change of its output value. When the output value of the detection device reaches the end reference value of 50Ω, according to the preset corresponding relationship, the first measurement value of the corresponding contrast solution is 10ml, and the system immediately generates a first alarm prompt. This prompt is of great significance to medical staff. For example, during coronary angiography, it means that the contrast agent is about to run out. If the operation is continued, it may affect the image display effect. The doctor needs to consider whether to replenish the contrast agent in time. On the contrary, when the output value of the detection device returns to the initial reference value of 0Ω, it indicates that the contrast solution in the syringe 1 has been exhausted. At this time, the corresponding second measurement value is 0ml, and the system generates a second alarm prompt. This prompts the medical staff that the contrast agent has been completely used up during the operation, and it is necessary to decide the next operation according to the operation situation, such as whether to end the operation or prepare to continue after replenishing the contrast agent. During the entire operation, the system continuously monitors the output value of the detection device to ensure that the medical staff can understand the remaining status of the contrast agent in time so as to make reasonable decisions. The first alarm prompts the doctor to know in advance that the contrast agent is about to run out, so that there is enough time to prepare to replenish the contrast agent, avoid interruption of the operation due to sudden depletion of the contrast agent, and ensure the continuity of the operation. The second alarm prompt clearly informs that the contrast agent has run out, preventing medical staff from continuing the operation without knowing it and avoiding invalid operations due to lack of contrast agent. It also helps to adjust the surgical plan or end the operation in time, improve the safety and efficiency of the operation, and protect the patient's health and medical effects.

[0081] Reference Figure 4 In one embodiment, the step of obtaining a first updated remaining dose based on the remaining dose of the contrast solution in the syringe measured by the detection device comprises:

[0082] Obtaining the current output value of the detection device 3 connected to the circuit;

[0083] Based on the initial reference value and the endpoint reference value, a linear relationship equation for the remaining dose is obtained;

[0084] The first updated remaining dose is obtained based on the current output value and the remaining dose linear relationship.

[0085] In the above embodiment, first, the current output value of the circuit connected to the detection device 3 is obtained by connecting a high-precision circuit measuring device. At this time, the current resistance value of the circuit connected to the detection device 3 (assuming it is a precision resistive sensor) is detected to be 20Ω, which is the current output value, which reflects the electrical state corresponding to the current remaining amount of contrast agent. Next, the linear relationship of the remaining dose is determined based on the pre-determined initial reference value and endpoint reference value. It is known that the initial reference value is 0Ω, which represents the initial state of the syringe 1 being empty; the endpoint reference value is 50Ω, corresponding to the state where a certain amount of contrast agent remains (set to 10ml here). Substituting these values ​​into the relationship y=kx, where y is the resistance value and x is the volume of the contrast agent, we get 50=k×10, and thus calculate the coefficient k to be one-fifth, that is, the accurate remaining dose linear relationship y=1 / 5x. Finally, substitute the current output value 20Ω into the above relationship, that is, 20=1 / 5x, and calculate x=100ml. Assuming that the initial total amount of contrast agent is 150ml, then the first consumed dose is 150-100=50ml, and the first updated remaining dose of the contrast agent in syringe 1 is 100ml. During the entire renal angiography procedure, the system will continue to measure and calculate according to this process to ensure that the doctor can obtain the most accurate information on the remaining dose of the contrast agent at any time, so as to accurately control the injection of the contrast agent.

[0086] During renal angiography, doctors can accurately grasp the timing and dosage of contrast agent injection based on accurate remaining dose data. This helps to clearly present the pathological conditions of renal blood vessels and tissues and improve diagnostic accuracy. It avoids unclear images due to insufficient contrast agent dosage, which may affect diagnosis, or unnecessary risks to patients due to excessive dosage, such as reducing the potential damage of contrast agents to kidney function. At the same time, it improves the continuity and efficiency of surgical operations, reduces interruptions or repeated operations caused by dosage issues, optimizes the use of medical resources, and ultimately ensures patient safety and surgical results, improving the overall quality of medical services.

[0087] Reference Figure 4 In one embodiment, the step of calculating the remaining dose of the contrast solution in the syringe based on the first preset algorithm in the detection system to obtain a second updated remaining dose includes:

[0088] Acquire a first time and a first speed at which the contrast liquid begins to be consumed;

[0089] Acquire a second time for finishing consuming the contrast liquid;

[0090] Calculate a second consumed dose according to the first speed, the second time and the first time;

[0091] The second updated remaining dose is obtained based on the difference between the original dose of the contrast liquid and the second consumed dose.

[0092] In the above embodiment, first, the first time and the first speed of starting to consume the contrast agent are obtained. For example, when performing an enhanced CT scan of the abdomen, when the contrast agent injection device is started to start injecting the contrast agent, the system records the time at this time as the first time, assuming it is 0 seconds, and at the same time, the speed sensor installed on the drive device 2 or the screw 4 is used to obtain the speed at which the contrast agent injection starts, that is, the first speed, for example, 2 ml / s. In addition, the system knows from previous measurements or calculations that the original dose of the contrast agent in the syringe 1 is 20 ml at this time; then, based on the first speed, the second time of ending the consumption of the contrast agent is obtained. As the contrast agent is injected, the system continuously monitors the speed sensor. When the injection stops, the time at this time is recorded as the second time. For example, if the injection lasts for 5 seconds, the second time is 5 seconds; then, the second consumed dose is calculated based on the first speed, the second time and the first time. According to the formula "consumed dose = speed × time difference", the second consumed dose is 2 ml / s*(5-0)s=10 ml.

[0093] Finally, based on the difference between the original dose and the second consumed dose, the second updated remaining dose is obtained. The second consumed dose of 10 ml is subtracted from the original dose of 20 ml, and the second updated remaining dose is 20-10=10 ml, which means that after this contrast agent injection operation, there is still contrast liquid remaining in the syringe 1. By accurately obtaining time and speed information to calculate the contrast agent consumption dose, accurate remaining dose data can be provided. Compared with manual estimation, the calculation result is more reliable and reduces the dose error caused by inaccurate human judgment. In medical operations, this helps doctors better understand the use of contrast agents and reasonably arrange subsequent injection plans. For example, in complex operations or examinations, accurate remaining dose information can avoid insufficient contrast agents affecting the image observation effect, thereby ensuring the smooth progress of the operation or examination and improving the accuracy of diagnosis. At the same time, it also helps to avoid the potential risks brought by excessive use of contrast agents, such as damage to the patient's kidneys and other organs, and improves the safety and effectiveness of the medical process.

[0094] In one embodiment, after the step of obtaining the first updated remaining dose, the following steps are included:

[0095] replenishing the contrast agent to be replenished into the syringe based on the first updated remaining dose to obtain a current mixed contrast agent;

[0096] Or after the step of obtaining the second updated remaining dose, the method further comprises:

[0097] The contrast solution to be replenished is added to the syringe based on the second updated remaining dose to obtain a current mixed contrast solution.

[0098] In the above embodiment, during the angiography operation, it is assumed that after previous measurement or calculation, the first updated remaining dose is 3 ml (this is obtained by measurement and calculation when the contrast agent is within the range reference position of the detection device) or the second updated remaining dose is 5 ml (this is obtained by calculation by the algorithm when the contrast agent remaining dose exceeds the range reference position, and the first updated remaining dose is used as an example for explanation here). The doctor determines that the contrast agent needs to be supplemented according to the operation process and the image display effect, and inputs the amount of contrast liquid to be supplemented through the operation interface, assuming that it is 6 ml, which is the amount of contrast liquid to be supplemented, and then the system starts to supplement the contrast agent, and the first updated remaining dose of 3 ml is calculated. ml is added to the first supplementary dose of 6ml to obtain 9ml, which is the remaining dose of the current mixed contrast solution. The method of obtaining the remaining dose of the current mixed contrast solution with the second updated remaining dose is the same as the method of obtaining the remaining dose of the current mixed contrast solution with the first updated remaining dose. During the replenishment process, the system will continuously monitor the replenishment situation. If the automatic replenishment method is adopted, the system will determine whether the automatic replenishment process is stopped halfway; if it is manual replenishment, the doctor manually pushes the piston of the syringe 1 to perform the replenishment operation, and the system will record relevant information, such as the speed and time of manual replenishment, to ensure accurate calculation of the remaining dose after replenishment and ensure the smooth progress of the operation. Ensure the adequate supply of contrast agent to avoid interruption of surgery or poor image quality due to insufficient contrast agent. Doctors can reasonably control the use of contrast agent based on accurate remaining dose information, improve the contrast effect, and help to clearly display the vascular lesions, thereby ensuring the smooth progress of the operation.

[0099] In one embodiment, the step of replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain the current mixed contrast solution includes:

[0100] Obtaining a first supplementary dose of the contrast solution to be supplemented;

[0101] Determine whether the automatic replenishment process is stopped midway;

[0102] If not, obtaining a current mixed contrast agent solution of a first supplementary remaining dose based on the sum of the first updated remaining dose and the first supplementary dose;

[0103] If yes, obtain the first replenishment time and the first replenishment speed for stopping replenishment;

[0104] Obtaining a replenished dosage based on the product of the first replenishment time and the first replenishment speed;

[0105] A second supplementary remaining dose of the current mixed contrast agent solution is obtained according to the sum of the first updated remaining dose and the supplemented dose.

[0106] In the above embodiment, the first supplementary dose of the contrast agent to be supplemented is first obtained. When performing angiography, the doctor determines that the contrast agent needs to be supplemented according to the progress of the operation and the image display effect, and inputs the amount of contrast agent to be supplemented through the operation interface. It is assumed that it is 5ml, which is the first supplementary dose; then it is determined whether the automatic supplementation process is stopped halfway. If the automatic supplementation process proceeds smoothly without stopping halfway, assuming that the first updated remaining dose calculated before is 3ml (or the second updated remaining dose, here taking the first updated remaining dose as an example, if it is the second updated remaining dose, the calculation principle is the same), then the first updated remaining dose of 3ml is added to the first supplementary dose of 5ml, and the first supplementary remaining dose of 3+8=8ml is obtained, which is the current mixed The remaining dose after mixing contrast solution; if the automatic replenishment process stops halfway, for example, it stops after replenishment for 2 seconds, the first replenishment time of 2 seconds when replenishment stops is obtained, and the system records the replenishment speed when stopping, assuming it is 1ml / s, that is, the first replenishment speed, and then calculates the replenished dose. By multiplying the first replenishment time 2 seconds and the first replenishment speed 1ml / s, the replenished dose is 2*1=2ml / s. Assuming that the previous first updated remaining dose is 3ml, then according to the first updated remaining dose (or the second updated remaining dose, here take the first updated remaining dose as an example, if it is the second updated remaining dose, the calculation principle is the same) and the sum of the replenished dose, the second replenished remaining dose of the current mixed contrast solution is 3+2=5ml. Through precise calculation and judgment, whether the automatic replenishment is smooth or stopped midway, the accurate remaining dose can be obtained, which helps doctors better control the use of contrast agents in surgery, improve the contrast effect, and ensure the smooth progress of the operation. At the same time, reasonable dose management reduces the waste of contrast agents, reduces medical costs, and reduces the risks that may be brought to patients due to inaccurate doses, such as adverse reactions caused by excessive contrast agents or insufficient doses affecting diagnostic results, thereby improving the safety and efficiency of medical operations.

[0107] In another embodiment, the step of replenishing the contrast solution to be replenished into the syringe based on the second updated remaining dose to obtain the current mixed contrast solution includes:

[0108] Obtaining a first supplementary dose of the contrast solution to be supplemented;

[0109] Determine whether the automatic replenishment process is stopped midway;

[0110] If not, obtaining the current mixed contrast liquid of the first supplementary remaining dose based on the sum of the second updated remaining dose and the first supplementary dose;

[0111] If yes, obtain the first replenishment time and the first replenishment speed for stopping replenishment;

[0112] Obtaining a replenished dosage based on the product of the first replenishment time and the first replenishment speed;

[0113] According to the sum of the second updated remaining dose and the replenished dose, the second replenished remaining dose of the current mixed contrast solution is obtained. The implementation of this embodiment is the same as "replenishing the contrast solution to be replenished in the syringe based on the first updated remaining dose to obtain the current mixed contrast solution", which will not be discussed here.

[0114] Reference Figure 4 In one embodiment, the step of replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain the current mixed contrast solution includes:

[0115] Obtaining a first replenishment duration and a first replenishment speed for a user to manually replenish the contrast liquid to be replenished;

[0116] Obtaining a first tonic dosage based on the product of the first tonic duration and the first tonic speed;

[0117] A third supplementary remaining dose of the current mixed contrast agent solution is obtained according to the sum of the first updated remaining dose and the first supplementary dose.

[0118] In the above embodiment, during a cerebral angiography operation, the doctor finds that the remaining dose of contrast agent may be insufficient and decides to manually replenish the contrast agent. First, the first replenishment time and the first replenishment speed of the contrast agent to be replenished are obtained. The doctor starts to manually push the piston of the syringe 1 to perform the replenishment operation. At this time, the system starts timing and records the time from the start of pushing to the stop of pushing. Assuming that this time is 10 seconds, this is the first replenishment time. At the same time, the system measures the flow speed of the contrast agent when the doctor manually replenishes the drug through a sensor linked to the syringe 1 (such as a pressure sensor combined with parameters such as the inner diameter of the syringe 1) or other specially designed speed detection devices. Assuming that it is 0.5ml / s, this is the first replenishment speed. Then, based on the product of the first replenishment time and the first replenishment speed, the first replenishment dose is obtained. According to the formula "dose = speed × time", the first replenishment dose is 0.5ml / s*10s=5ml / s.

[0119] Then, assuming that the first updated remaining dose calculated by the system before is 3ml (if it is the second updated remaining dose, the calculation principle is the same), according to the sum of the first updated remaining dose and the first replenishment dose, the current mixed contrast solution of the third replenishment remaining dose is obtained, that is, the current mixed contrast solution of the third replenishment remaining dose is 3ml+5ml=8ml, which is the current remaining dose of the contrast agent in syringe 1 after manual replenishment of the contrast solution. In this way, after manually replenishing the contrast agent, the doctor can clearly know the current remaining amount of contrast agent in syringe 1, so as to continue to perform surgical operations accurately, ensure that the contrast effect meets the surgical requirements, and avoid adverse effects on the operation due to too much or too little contrast agent. During the contrast agent replenishment process, doctors are allowed to manually operate and accurately calculate the remaining dose, which increases the flexibility of operation. Accurate dose calculation helps doctors better understand the use of contrast agents during surgery and ensure the best contrast effect. Compared with relying solely on automatic replenishment, manual replenishment in certain special circumstances (such as unclear imaging of specific parts during surgery and the need to adjust the contrast agent dose in time) can meet surgical needs more promptly and accurately. This not only improves the success rate and quality of the operation, but also reduces the risks that may be caused by inaccurate contrast agent doses, such as excessive contrast agents that burden the patient's body or insufficient doses that cause unclear display of the lesion site and affect diagnosis and treatment, thereby improving the overall safety and effectiveness of medical operations.

[0120] In another embodiment, the step of replenishing the contrast solution to be replenished into the syringe based on the second updated remaining dose to obtain the current mixed contrast solution includes:

[0121] Obtaining a first replenishment duration and a first replenishment speed for a user to manually replenish the contrast liquid to be replenished;

[0122] obtaining a first tonic dosage based on the product of the first tonic duration and the first tonic speed;

[0123] According to the sum of the second updated remaining dose and the first supplementary dose, a third supplementary remaining dose of the current mixed contrast solution is obtained. The implementation of this embodiment is the same as "the contrast solution to be supplemented in the syringe based on the first updated remaining dose to obtain the current mixed contrast solution", which will not be discussed here.

[0124] Reference Figure 2 , Figure 4In a second aspect, the present application further proposes a contrast agent remaining dose detection device 10, which is used to implement the method described in any of the above embodiments and is applied to a contrast agent remaining dose detection system, wherein the detection system comprises a syringe 1, a drive device 2 and a detection device 3, wherein the drive device 2 is connected to the syringe 1 and the detection device 3 through a screw rod 4, respectively. When the drive device 2 drives the screw rod 4 to push the syringe 1 to a specified position, the syringe 1 moves in conjunction with the detection device 3, and the syringe 1 is used to contain a contrast solution, and comprises:

[0125] A start module 11 is used to start contrast solution injection;

[0126] A judging module 12, used for judging whether the syringe 1 is linked with the detection device 3;

[0127] a measuring module 13, configured to measure the remaining dose of the contrast solution in the syringe 1 based on the detection device 3 to obtain a first updated remaining dose;

[0128] The calculation module 14 is used to calculate the remaining dose of the contrast agent solution in the syringe 1 based on the first preset algorithm in the detection system to obtain a second updated remaining dose. As described above, it can be understood that the components of the contrast agent remaining dose detection device 10 proposed in the present application can realize the functions of any one of the above-mentioned contrast agent remaining dose detection methods.

[0129] Reference Figure 3 , Figure 4 The third aspect of the present application also provides a computer device, the internal structure of which can be as follows Figure 3As shown. The computer device includes a processor, a memory, a network interface and a database connected via a system bus. Among them, the processor designed for the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating device, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as a method for detecting the remaining dose of contrast agent. The network interface of the computer device is used to communicate with an external terminal through a network connection. Furthermore, the above-mentioned computer device can also be provided with an input device and a display screen, etc. The above-mentioned computer program is executed by the processor to implement a method for detecting the remaining dose of contrast agent, including the following steps: starting the injection of contrast solution; determining whether the syringe 1 is linked with the detection device 3; if so, measuring the remaining dose of the contrast solution in the syringe 1 based on the detection device 3 to obtain a first updated remaining dose; if not, calculating the remaining dose of the contrast solution in the syringe 1 based on the first preset algorithm in the detection system to obtain a second updated remaining dose. Those skilled in the art can understand that Figure 3 The structure shown in is merely a block diagram of a portion of the structure related to the present application solution and does not constitute a limitation on the computer device to which the present application solution is applied.

[0130] Reference Figure 4 In a fourth aspect, the present application further proposes a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, a method for detecting a remaining dose of contrast agent is implemented, comprising the following steps: starting injection of contrast solution; determining whether the syringe 1 is linked to the detection device 3; if so, measuring the remaining dose of the contrast solution in the syringe 1 based on the detection device 3 to obtain a first updated remaining dose; if not, calculating the remaining dose of the contrast solution in the syringe 1 based on a first preset algorithm in the detection system to obtain a second updated remaining dose.

[0131] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media provided in this application and used in the embodiments may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0132] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, device, article or method. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, device, article or method including the element.

[0133] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for detecting the remaining dose of contrast agent, characterized in that: Applied to the contrast agent residual dosage detection system, the detection system includes a syringe, a driving device and a detection device, the driving device is respectively connected to the syringe and the detection device through a screw rod, when the driving device drives the screw rod to push the syringe to move to a specified position, the syringe and the detection device move in linkage, the syringe is used to contain contrast liquid, and includes: Start contrast solution injection; Determining whether the syringe is linked with the detection device; If yes, then measuring the remaining dose of the contrast solution in the syringe based on the detection device to obtain a first updated remaining dose; If not, the remaining dosage of the contrast solution in the syringe is calculated based on a first preset algorithm in the detection system to obtain a second updated remaining dosage.

2. The method for detecting the remaining dose of contrast agent according to claim 1, characterized in that: The step of measuring the remaining dose of the contrast solution in the syringe based on the detection device comprises: Acquire an initial reference value of the detection device in the initial state of the syringe; Based on the initial reference value, the endpoint reference value of the detection device in the endpoint state of the syringe is obtained through the linkage movement of the detection device and the syringe; Based on the range from the initial reference value to the end reference value, the remaining dose of the contrast liquid is measured.

3. The method for detecting the remaining dose of contrast agent according to claim 2, characterized in that: The step of obtaining a first updated remaining dose based on measuring the remaining dose of the contrast solution in the syringe by the detection device comprises: Obtaining a current output value of a circuit connected to the detection device; Based on the initial reference value and the endpoint reference value, a linear relationship equation for the remaining dose is obtained; The first updated remaining dose is obtained based on the current output value and the remaining dose linear relationship.

4. The method for detecting the remaining dose of contrast agent according to claim 1, characterized in that: The step of calculating the remaining dose of the contrast solution in the syringe based on the first preset algorithm in the detection system to obtain a second updated remaining dose includes: Acquire a first time and a first speed at which the contrast liquid begins to be consumed; Acquire a second time for finishing consuming the contrast liquid; Calculate a second consumed dose according to the first speed, the second time and the first time; The second updated remaining dose is obtained based on the difference between the original dose of the contrast liquid and the second consumed dose.

5. The method for detecting the remaining dose of contrast agent according to claim 1, characterized in that: After the step of obtaining the first updated remaining dose, the method further comprises: replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain a current mixed contrast solution; Or after the step of obtaining the second updated remaining dose, the method further comprises: The contrast solution to be replenished is added to the syringe based on the second updated remaining dose to obtain a current mixed contrast solution.

6. The method for detecting the remaining dose of contrast agent according to claim 5, characterized in that: The step of replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain the current mixed contrast solution includes: Obtaining a first supplementary dose of the contrast solution to be supplemented; Determine whether the automatic replenishment process is stopped midway; If not, obtaining a current mixed contrast agent solution of a first supplementary remaining dose based on the sum of the first updated remaining dose and the first supplementary dose; If yes, obtain the first replenishment time and the first replenishment speed for stopping replenishment; Obtaining a replenished dosage based on the product of the first replenishment time and the first replenishment speed; A second supplementary remaining dose of the current mixed contrast agent solution is obtained according to the sum of the first updated remaining dose and the supplemented dose.

7. The method for detecting the remaining dose of contrast agent according to claim 5, characterized in that: The step of replenishing the contrast solution to be replenished into the syringe based on the first updated remaining dose to obtain the current mixed contrast solution includes: Obtaining a first replenishment duration and a first replenishment speed for a user to manually replenish the contrast liquid to be replenished; obtaining a first tonic dosage based on the product of the first tonic duration and the first tonic speed; A third supplementary remaining dose of the current mixed contrast agent solution is obtained according to the sum of the first updated remaining dose and the first supplementary dose.

8. A device for detecting the remaining dose of contrast agent, used to implement the method according to any one of claims 1 to 7, characterized in that: Applied to the contrast agent residual dosage detection system, the detection system includes a syringe, a driving device and a detection device, the driving device is respectively connected to the syringe and the detection device through a screw rod, when the driving device drives the screw rod to push the syringe to move to a specified position, the syringe and the detection device move in linkage, the syringe is used to contain contrast liquid, and includes: A start module, used to start contrast solution injection; A judging module, used for judging whether the syringe is linked with the detection device; a measuring module, configured to measure the remaining dose of the contrast solution in the syringe based on the detection device to obtain a first updated remaining dose; The calculation module is used to calculate the remaining dosage of the contrast solution in the syringe based on the first preset algorithm in the detection system to obtain a second updated remaining dosage if no.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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