SENSOR-BASED CENTERING SYSTEM FOR PATIENT PLACEMENT

Abstract

The invention relates to a sensor-based system that assists in positioning the patient along the mediolateral axis relative to the gantry isocenter during patient placement in Computed Tomography (CT) scanners. The system comprises a pad / device that can be detached from the CT table, multiple force sensors located on and / or within the pad / device, at least one motion sensor, a processing unit that processes the sensor data, and a user interface that provides the operator with directional and quantitative information. The processing unit determines the amount of patient displacement along the mediolateral axis based on data from the force sensors and evaluates the measurement reliability based on data from the motion sensor. If the measurement reliability is sufficient, the operator is provided with the correction direction and amount; if the measurement reliability is insufficient, a remeasurement warning is given and / or output generation is blocked.Thus, the invention provides an active decision support structure that makes patient-centering objective, quantifiable, and repeatable, while also considering measurement reliability.

Description

SENSOR-BASED CENTERING SYSTEM FOR PATIENT PLACEMENT TECHNICAL FIELD The invention relates to patient positioning technologies in medical imaging systems. The invention specifically addresses the placement of the patient in Computed Tomography (CT) scanners. Determining the position of the object on the mediolateral axis relative to the gantry isocenter, measurement. its reliability is assessed based on patient movement and applicability to the operator. It relates to the system for providing repositioning output. STATE OF THE ART Computed Tomography (CT) systems offer high resolution and speed in diagnostic imaging. Because they provide cross-sectional imaging, they are the most widely used imaging techniques in modern medicine. It is one of the methods. The image quality obtained in CT scans depends solely on the technical specifications of the device. not only regarding the patient's characteristics, but also regarding the correct positioning of the patient according to their gantry isocenter. It is directly related. In particular, the deviation of the patient from the isocenter in the mediolateral axis; image decrease in quality, displacement of anatomical structures off-center, automatic dosing This leads to a decrease in the effectiveness of modulation systems, unnecessary radiation exposure, and repeated... This may necessitate filming. In current practices, patient positioning is mostly based on the operator's experience. This is being carried out using scout imagery and laser alignment systems in some systems. Sensors integrated into the patient table using camera or optical sensing-based solutions These systems are utilized. However, these systems have different operating principles. However, in terms of accuracy of patient positioning and measurement reliability... It involves various technical limitations. As part of the preliminary patent search conducted regarding the subject of the invention; Turkish and English versions of the databases are available at TÜRKPATENT, Espacenet and WIPO Patentscope. Extensive research was conducted using keywords, and also A61B and A61N Numerous patent documents falling under international patent classes have been examined. The research specifically focused on patient positioning, isocenter determination, pressure sensors, and force. sensors, patient movement monitoring, repositioning, and sensor-based measurement. Patent applications related to these systems have been evaluated. 1 In the preliminary investigation, patent application number WO2018192933A1 was identified, concerning a patient table. Determining patient weight distribution using a pressure sensor matrix placed on it. monitoring patient movement, tracking respiration, and calculating table sag. Solutions for this are explained. Furthermore, when movement is detected, the patient returns to their previous state. Warnings can be generated to indicate that the device should be brought to that position. The preliminary investigation identified patent number US9433387B2, which contains pressure distribution data. using the correct positioning of the patient, monitoring of patient movement and readjustment Solutions for positioning are explained. In this system, sensor arrays are used to determine patient weight. and is used to measure pressure distribution, in radiotherapy and diagnostic imaging. The aim of these procedures is to maintain the patient's position. The patent numbered US20090285357A1, which was examined in the preliminary investigation, deals with three-dimensional optics. using an imaging system, automatically according to the patient's radiological imaging device. Its positioning is explained. In addition, patent number US11547323B2 Creating a patient surface model using a depth camera, monitoring patient movement. and the repositioning of the patient's bed accordingly is explained. In these solutions Optical imaging and surface modeling are the main principles. However, the current technical solutions examined are based on the patient's gantry isocenter. directly numerically determines its position on the mediolateral axis during measurement. an independent evaluation criterion that determines the reliability of measuring potential patient movement It uses this data to analyze the measurement result according to reliability criteria and present it to the operator. and also tells the operator in which direction and by how much to move an integrated system that provides a standardized repositioning output It does not include. Similarly, in current solutions, sensor data mostly reflects patient weight distribution. determination, monitoring of patient movement, calculation of table deformation or optical It is used to create a patient model from images. However, the sensor Quantitative measurement of the patient's mediolateral deviation relative to the gantry isocenter using data. calculation, relating patient movement measurement reliability, unreliable Distinguishing measurements and providing the operator with standardized reconstructions containing direction and quantity. The current technique does not explain how to generate a positioning recommendation. Furthermore, the current... A significant portion of the systems are integrated into the devices themselves and can be linked to different IT devices. It does not offer an easily applicable, detachable, and independent accessory structure. Therefore, in the current technique, a device that can be detached and applied to the CT patient table can be used to assist the patient. numerically determining the mediolateral position relative to the gantry isocenter, during measurement. 2 a measurement that calculates the reliability of the measurement by evaluating possible patient movement. It analyzes the result according to reliability criteria and provides the operator with direction and quantity. A system that provides standardized repositioning output is needed. THE PURPOSE OF THE INVENTION The main purpose of the invention is to improve patient placement during Computed Tomography (CT) imaging. mediolateral centering is performed objectively, quantitatively, repeatably, and is operator-independent. to make it so. Another aim of the invention is to determine the amount of left-right shift in the patient using sensor data. to determine precisely with the help of. Another objective of the invention is to evaluate the reliability of measurements depending on patient movement. Another purpose of the invention is to provide guidance to the operator when measurement reliability is sufficient. The goal is to provide a standardized repositioning output that includes quantities. Another purpose of the invention is to enable remeasurement in cases where measurement reliability is insufficient. to issue a warning and / or block the measurement output. Another aim of the invention is to provide a detachable and retrofittable solution for existing IT devices. to provide. Another aim of the invention is to standardize the workflow in the patient placement process in clinics. The goal is to ensure consistency and efficiency in practice. Another aim of the invention is to support operator decision-making in the patient positioning process, in clinical settings. The aim is to provide a usable and directly applicable assistive system. Another aim of the invention is to reduce pre-positioning errors in reshoots. The goal is to minimize the need, unnecessary radiation exposure, and wasted time. DETAILED DESCRIPTION OF THE INVENTION The invention relates to the process of positioning the patient in Computed Tomography (CT) scanners. objective and numerical determination of the position on the mediolateral axis relative to the gantry isocenter enabling the determination of patient movements that occur during the measurement. by evaluating and analyzing the reliability of the measurement, and applying it to the operator. It is a sensor-based patient centering system that provides positioning information. The system is currently available. Suitable for use on IT devices without requiring any structural changes. 3 It is designed to be detachable. This allows it to be used with different brands and models of Computed Tomography scanners. It can be easily applied to devices and, if necessary, removed and transferred to another device. It can be transferred. The system basically consists of a pad, force sensor, motion sensor, processing unit, and user interface. It consists of these components. These components work in coordination with each other to protect the patient's pad. It starts the measurement process from the moment it is placed on the surface, and collects the sensor data obtained. By processing, it calculates the amount of deviation of the patient from the center and the operator directly It produces a repositioning output that the patient can apply. Throughout the measurement process, the patient Their movements are also constantly monitored, and any movement that could affect the measurement accuracy is considered. The system operator is notified when the level is reached. Thus, the system only It is not a passive structure that determines the patient's position, but also ensures measurement reliability. It functions as an active decision support system that evaluates. During operation, the patient is first positioned on a pad. The patient's body weight supports the pad. while detected by the force sensors inside, the event that occurs during the measurement Any linear or angular movements that may occur are monitored by the motion sensor. Force All data obtained from the sensors and the motion sensor is transferred to the processing unit. Here, various calculation and evaluation algorithms are used to assess the patient's mediolateral side. The position on the axis is determined. The results obtained are transferred to the user interface and The operator is clearly instructed on which direction and by how much the patient needs to be moved. If the measurement reliability is insufficient, the system requests a re-measurement. It can recommend or prevent the use of unreliable measurement results. This structure helps to prevent user-generated issues that may arise based on the operator's visual assessment. Variability is reduced, patient placement is performed by different operators. Standardization is ensured in the processes. In addition, the patient-centering process is based on numerical data. Since it is based on improving image quality, it reduces unnecessary radiation exposure. The aim is to reduce the number of scans and decrease the need for repeat scans. The pad used in the invention is the part of the system that comes into direct contact with the patient and the sensors. It is the basic structural element that enables mechanical transport. PED, Computed Tomography It is designed to be attached to the table in a detachable manner, allowing the patient to measure the duration of the procedure. It ensures secure, stable and repeatable positioning throughout. Pad, also force sensors, motion sensors and their electronic components by enabling measurements to be stored in appropriate geometric positions for each use. This makes it possible to carry out the process according to the same reference system. 4 The pad is preferably implemented as a multi-layered structure. This layered structure provides mechanical... different functions such as durability, hygiene, electronic protection and ease of assembly This allows for independent execution. The thickness of the layers used The type of material and layout may be changed depending on the application, and the invention... It does not limit its scope. The upper part of the pad contains a top cover layer that is in direct contact with the patient. This top cover layer... The layer can be made with a soft structure to enhance patient comfort, and the same It should be hygienic, wipeable, disinfectable, and preferably liquid-proof. This shows that the system can be easily cleaned after clinical use. It can be safely reused among different patients. The top covering layer. Its flexible structure allows the patient's weight to be transmitted to the force sensors in a controlled manner. will have mechanical properties that will not negatively affect sensor performance is selected. Beneath the outer casing layer lies the electronic layer. The electronic layer powers the system. sensors and the transmission of electrical signals obtained from the motion sensor It incorporates conductive paths, connecting elements, and necessary electronic circuits. It contains. In addition, low-level analog signals from the sensors are external. In order to protect against electromagnetic effects, the necessary insulation and shielding structures are also included. This can be done within the layer. Thus, any issues that may arise during measurement... This prevents electromagnetic interference from reducing measurement accuracy. The base layer, located beneath the electronic layer, forms the structural support of the pad. This layer ensures that the sensor positions are maintained throughout the service life, for the patient. It limits the deformations that may occur under the weight and the forces transmitted to the sensors. It contributes to the transfer as intended. The base layer also protects the pad. Ensuring the Computed Tomography table is positioned correctly according to the surface geometry. They can be manufactured to have specific mechanical properties. At the very bottom of the pad is the binding layer. The binding layer holds the pad together. Measurements can be taken by attaching the device to the computed tomography (CT) table in a detachable manner. This prevents the pad from shifting during the measurement. Thus, it provides a reference point during the measurement. The preservation of the coordinate system is ensured, and the measurement is affected by the unintentional slippage of the pad. This prevents errors from occurring. The tablet is attached to the Computed Tomography (CT) scanner using connecting elements. Depending on the application, the fastener can be a hook and loop fastener, clip fastener, screw fastener, or... It can be any of the similar detachable mechanical fasteners. Different Depending on the geometric characteristics of the computed tomography tables, there may be one or more connections. The elements can be used together. Thus, the system eliminates any permanent mechanical problems in existing devices. It can be assembled quickly without requiring any modifications and easily removed if needed. It can be disassembled. The pad structure is not only a passive support element on which the patient lies, but also contains sensors. ensuring correct positioning, protecting electronic components, and improving measurement accuracy. many supporting and enabling the integration of the system with the Computed Tomography device It serves as a functional structural platform. The force sensor system detects the load distribution applied by the patient on the pad, thus monitoring the patient's condition. It is the fundamental measurement subsystem that enables the determination of the position on the mediolateral axis. Force The sensors are placed at predetermined coordinates within the pad, and each sensor It independently measures the magnitude of the force at its location. All measured forces... By evaluating these values ​​together, the patient's load distribution on the pad is numerically determined. is being created. Force sensors should preferably be arranged symmetrically along the mediolateral axis. It is positioned accordingly. However, it is suitable for different patient anatomies or different pads. The sensor positions can be rearranged according to their geometries. The absolute positions of the sensors... rather than its location, each sensor is located at coordinates known to the system. This is sufficient. Thus, the centering algorithm uses the position information of each sensor to determine the patient's position. It can calculate the equilibrium point with high accuracy. In one application, force sensors detect the load distribution on the patient's left side. right-side sensors that detect load distribution on the patient's right side It consists of force values ​​obtained from the sensors on the left side and from the sensors on the right side. By comparing the obtained force values, the patient's tendency to shift to the right or left can be determined. This is determined. When the load distribution is balanced between both sides, the patient's mediolateral It is assumed that the axis is centered on the side. The total force measured on one side... If it increases on the other side, the patient is shifted towards the relevant direction by the processing unit. It is determined. The sensors differ not only in the right and left directions, but also in the anteroposterior direction. It can be distributed across different regions. Thus, in the shoulder, torso, pelvis, and lower extremity areas. The resulting load distribution can be evaluated separately, considering the patient's overall weight on the pad. 6 The center can be calculated more accurately. This structure is especially suitable for different heights and weights. It increases measurement accuracy in patients with these values. Force sensors include strain gauge-based load cells, piezoresistive sensors, and piezoelectric sensors. sensors, capacitive force sensors, or sensors that convert the magnitude of force into an electrical signal This can be achieved by using one or more similar sensors capable of conversion. The type of sensor to be used depends on measurement accuracy, cost, mechanical strength, response time, and manufacturing. The selection can be made according to criteria such as the method used and the changing of the sensor technology. It does not alter the working principle of the invention. The analog signal generated by each force sensor is processed through an electronic layer. The data is transferred to the processing unit. The processing unit simultaneously receives data from all sensors. by evaluating, it calculates the relative force distribution between the sensors and the patient's It determines the center of gravity. The calculated equilibrium point is the reference point defined for the system. The amount of mediolateral displacement in the patient is calculated by comparing it to the central point. Thus, instead of centering done by the operator's eye, it is done entirely based on numerical data. This is obtained as a result of objective centering based on a specific method. The force sensor system forms the basic measurement mechanism of the invention, and it measures the patient's... It serves as the primary data source that directly determines its location. Movement By evaluating the information obtained from the sensor together with the patient's data, only the patient's It's not just about where it is located, but also whether the location information obtained is reliable. This can be determined. In this respect, the force sensor system is crucial for the system's decision-making mechanism. It forms the basis. The motion sensor system detects linear and angular movements occurring during the patient's measurement period. Centering obtained from force sensors by enabling the detection of their movements. It is a sensing subsystem that contributes to evaluating the reliability of the data. Force The sensors determine the patient's load distribution on the pad, while the motion sensor simultaneously within this range, it monitors the patient's voluntary or involuntary movements and the obtained positional information. It helps determine whether it is usable. In this way, the system only It not only determines the patient's current location, but also uses this location information in clinical practice. It can also assess whether it is reliable or not. The motion sensor is preferably implemented with at least one inertial measurement unit. Inertia The measurement unit may include at least one accelerometer and / or at least one gyroscope. The accelerometer monitors the patient's... by detecting linear accelerations occurring during the measurement period, the displacement trends When determining this, the gyroscope monitors the rotational and angular movements occurring in the patient's torso. 7 It detects changes in orientation. When necessary, these two sensors can be used together. The patient's movement characteristics in three axes can be determined with higher accuracy. Linear motion data obtained from the accelerometer is particularly important when the patient is moving to the right, left, forward, or... It is used to determine the sudden backward displacements it makes. Obtained from the gyroscope. The angular velocity data obtained is calculated when the patient turns their torso, rotates their shoulders, or It enables the detection of situations such as involuntary rotational movements. Thus, not only the changes occurring in the load distribution but also the factors causing these changes are considered. The nature of the movements can also be evaluated by the processing unit. The motion sensor should preferably be located near the geometric center of the pad. It is positioned so that the patient's general trunk movements are directed from a single reference point. It can be monitored, and the data measured by the sensor is the load distribution obtained from all force sensors. It can be associated with this. However, placing the motion sensor at different points Alternatively, it is also possible to use multiple motion sensors. Multiple motion sensors If used, the movements of different body parts can be evaluated and measured separately. Its reliability can be analyzed in more detail. Raw data obtained from the motion sensor is not used directly in decision-making. The processing unit evaluates sudden vibrations and short-duration shocks in the time axis. Environmental influences are filtered out, and only meaningful actions specific to the patient are taken into account. This prevents inaccurate assessments that may result from sensor noise. It is being passed. Although the motion sensor system operates independently of the force sensors, both The system is structured in a way that complements each other. Force sensors monitor the patient's... When generating centering information, the motion sensor determines under what conditions this information was obtained. This reveals that unreliable measurement results can occur due to patient movement. This can be prevented from being transmitted to the operator, and only clinically usable results can be obtained. An evaluation is provided. The processing unit collects, processes, and analyzes data from all the electronic components of the invention. It is the central control unit that processes and generates the decision output to be presented to the user. The processing unit; Load distribution data obtained from force sensors and data obtained from motion sensors By simultaneously evaluating the movement data, the patient's movement on the mediolateral axis to calculate its position, determine the reliability of the measurement, and provide the operator with applicable revisions. It generates positioning information. 8 The processing unit basically consists of a microcontroller, ADC module, memory, and power management unit. It consists of calculation software, a filtering module, and a calibration repository. Each component performs a specific function while working together, ensuring the system's seamless operation. and ensures that it operates reliably. The microcontroller is the main control element of the system. The microcontroller receives data from the sensors. reading the data, managing the measurement timing, running the calculation algorithms, It handles user interface updates and controls communication processes. Thus, all electronic components in the system are managed from a single center. The ADC module converts the analog electrical signals obtained from the force sensors and the motion sensor. It converts signals into digital data. The digitized data is then stored by a microcontroller. It becomes processable and is passed on to computational algorithms by the ADC. The resolution and sampling rate can be changed depending on the application and will be used. The ADC architecture does not limit the scope of the invention. Memory stores system software, operating parameters, measurement results, and necessary user data. It is a data storage unit where settings are stored. Memory also contains the system's last measurement data. Records, error logs, and calibration information can also be stored. Thus, the system It can use its previous settings each time it is run without requiring reconfiguration. The power management unit provides the necessary operating conditions for the electronic components in the system. regulating voltages, providing protection against overcurrent and voltage fluctuations, and It controls the energy distribution. This ensures stable operation of the sensors and the processing unit. The conditions are maintained. Computational software forms the core decision-making mechanism of the processing unit. The software... firstly, the force values ​​obtained from the force sensors and the sensors' system It calculates the patient's balance point using the positional information within the device. The calculated equilibrium point is compared with the reference center point, and the patient's The amount of mediolateral shift is determined. Then, data obtained from the motion sensor is used. The reliability of the measurement in question is analyzed by evaluating it. The filtering module performs digital signal processing operations on the data obtained from the sensors. By performing this, it improves measurement accuracy. In this context, high-frequency noises They can be suppressed, outlier measurement values ​​can be eliminated, and sequential measurements can be taken if necessary. By centering, more stable results can be obtained. Thus, small differences in patient weight... 9 Incorrect centering results that may occur due to oscillations or environmental vibrations. is being prevented. The calibration reservoir stores the system's calibration parameters. Sensor offset. values, reference center information, linear correction coefficients, motion sensor calibration Data and the system's factory settings are stored in this repository. The process during measurement... Since the unit performs its calculations using these parameters, it works in different systems and The repeatability of measurements is maintained across different usage periods. The processing unit is not merely an electronic control element that processes sensor data; interpreting data from sensors, evaluating measurement reliability, and making decisions. and the central decision-making system that produces a user-applicable repositioning output. It forms the mechanism that enables the technical impact of the invention to emerge. It is a fundamental functional component. The user interface displays the centering results calculated by the processing unit to the operator. human- It is a machine interaction unit. Through the user interface, the operator interacts with the patient's mediolateral side. The single unit contains information on the current position on the axis, the state of motion, and the necessary repositioning. This allows the operator to monitor the centering process via a screen. a standard workflow based on numerical data, rather than being dependent on evaluation. It is being transformed. The user interface is preferably implemented as a screen-based display unit. However, different applications use touch screens, LCD screens, OLED screens, and tablets. Computer screens or similar display elements can be used. The physical interface... Its structure may vary depending on the application, but the basic working principle of the invention is... It does not impose any restrictions. The mediolateral shift direction calculated by the processing unit is indicated on the user interface. This is communicated to the operator via the indicator. The arrow indicator signals the patient's referral center. It clearly shows which side the car has shifted relative to the point. Thus, the operator can determine any direction. Without making any comments, directly determine which direction the patient should be moved. It can understand. If necessary, the arrow indicator will show the position to the left, right, or center. This can be implemented in various graphical formats. The amount of displacement is presented numerically via a millimeter scale. The indicator displays the centering error calculated by the processing unit as a numerical value. It shows and quantitatively how much the operator needs to move the patient. This enables the determination of directional information, as well as the method to be applied. The magnitude of the correction is also being standardized. Numerical representation at different resolutions. This can be achieved, and the measurement accuracy depends on the application requirements. It can be determined. The user interface also includes a status indicator. The status indicator is a unit of operation. It transmits the result of the motion analysis performed by the system to the operator. In practice, a status indicator shows whether the measurement is reliable, whether a repeat measurement is needed, or whether the patient is ill. It can indicate system states such as when repositioning is needed. Thus The operator sees not only the centering result but also the usability of that result. It can also assess the level simultaneously. A warning icon will appear on the user interface if the measurement reliability is insufficient. is displayed. The warning icon indicates that the patient moves during the measurement, and the sensor data is affected. unreliable, requiring a repeat measurement, or by the system It is used to inform the operator of other specified error conditions. Thus This prevents the erroneous evaluation of unreliable measurements. LEDs are installed on the user interface to allow for quick monitoring of the system's operating status. Indicators may also be present. LED indicators show the system's power status and the measurement process. whether it is ongoing, the measurement is complete, the system is ready, or there are different error conditions. It can display colors and flashing modes. This allows the operator to continuously view the information on the screen. They can easily monitor the system status without having to look. The user interface may also include a control button. Control button Through this system, the system can be turned on and off, new measurements can be started, and calibration processes can be performed. This can be done, user consent can be obtained, or system settings can be accessed. The control button can be a physical mechanical switch, capacitive touch button, or similar user input device. It can be carried out as any of its elements. In this respect, the user interface is not merely a passive screen displaying measurement results, The decision outputs generated by the processing unit are presented to the operator in a standard, understandable, and applicable manner. It functions as an active decision support component that enables the information to be conveyed in this way. Within the scope of this invention, the processing unit only positions the patient along the mediolateral axis. It is not enough to simply calculate; it is also necessary to ensure the reliability of this calculation. It evaluates this using load distribution data obtained from force sensors. 11 Motion data obtained from the motion sensor are analyzed together, and the measurement is clinically evaluated. Its suitability for use is determined. Thus, the operator receives not only location information, It is also stated whether this information can be used safely. The processing unit processes the linear and angular motion data obtained from the motion sensor according to specific parameters. It classifies the patient's mobility status by analyzing it according to evaluation criteria. In an application, the motion state is classified into at least three different categories: stable, controlled, and mobile. This classification is for illustrative purposes only and is not applicable in practice. Depending on the requirements, different classification methods can also be used. In a stable state, it is assumed that the patient does not move significantly during the measurement period. In this case, the load distribution data obtained from the force sensors is reliable. It is considered that the processing unit directly calculates the amount of mediolateral shift. It transfers the information to the user interface. The operator uses the direction and distance suggested by the system. Based on his knowledge, he is able to reposition the patient. In the monitored state, the patient is found to have limited mobility. However, that the movement in question was not strong enough to completely invalidate the centering result is being evaluated. In this case, the processing unit, instead of relying on a single measurement result, It can perform consecutive measurements at specific time intervals and calculate the average of these measurements. By doing this, it can create the final centering result. Thus, short-duration and low-amplitude results are obtained. The effect of movements on the measurement result is reduced. In the case of movement, it is assumed that the patient's movement exceeds the established safety limits. In this case, the centering information obtained from the force sensors is reliable. It is not available and the processing unit may prevent the measurement result from being used. User A warning icon is displayed on the interface, prompting the operator to re-settle the patient or A new measurement may be requested. If necessary, the system may be unreliable. It is possible to completely block the display of the centering result to the user. The decision-making process is not solely dependent on data obtained from the motion sensor. The process... The unit detects sudden changes in signals from force sensors when necessary. inconsistencies between them, quality parameters obtained from the filtering module, and By jointly evaluating the accuracy of the calibration information, the reliability of the measurement can be improved. It can determine this. Thus, instead of making a decision based on a single parameter, a multivariate approach is used. An evaluation is being carried out. 12 When the measurement reliability is deemed sufficient, the system provides the operator with a correction in direction and millimeters. It produces a repositioning output that includes the amount. The operator makes the necessary correction. After this, the system can perform a re-measurement and the patient can be referred to a center. This confirms that the patient is located on the correct path. The patient is within the target center. When evaluated, the user interface displays information indicating readiness for shooting, and The computed tomography (CT) scan procedure can now begin. Thanks to this decision-making mechanism, the system only determines the patient's current location. It is ceasing to be a measurement system; it is becoming an unreliable system that analyzes the accuracy of measurements. Automatically extracts results and provides the operator with directly applicable decision support. It is becoming an intelligent patient-centered system that provides this. This feature is a technical aspect of the invention. It constitutes one of the fundamental functions that produce its effect. Within the scope of this invention, the processing unit processes the acquired measurement data only locally. not only for evaluation, but also to be shared with other systems It may also include a communication module. The communication module is created by the processing unit. centering results, system status information, calibration data, and other measurements It enables the transfer of outputs to the Computed Tomography device or external systems. Thus, the patient centering process is not only seen as an independent piece of assistive equipment, It can also be used as part of the imaging workflow. The communication module can be used with either wired and / or wireless communication infrastructures. This can be achieved in an application using USB, Ethernet, serial communication, and CAN-based methods. While wired communication methods or similar communication techniques may be used, in another application Bluetooth, Wi-Fi, or similar short- or long-range wireless communication technologies are preferred. This is possible. The communication standard used depends on the application requirements. It is interchangeable and does not limit the fundamental working principle of the invention. Thanks to the communication module, the amount of mediolateral shift calculated by the system, the shift Direction, measurement reliability, motion classification, and system status information are computerized. The data can be transferred to the control software of the tomography device. This allows the operator to receive the same information. The need to monitor from different screens is eliminated, and centering outputs are achieved. It can be directly integrated into the existing imaging workflow. In an application, the communication module not only transmits measurement results but also... It can also receive commands from the tomography device or an external user terminal. This within the scope of new measurements, system calibration, user 13 Operations such as changing settings or updating system software can be performed remotely. It can be accomplished. The communication module also integrates with hospital information management systems, quality control software, and services. It can also enable data sharing with software or similar external platforms. This allows for long-term monitoring of system performance, maintenance records, and measurement. This makes it possible to evaluate statistics and carry out quality assurance processes. It is coming. The system can also function as a completely standalone device without a communication module. can be executed. In this case, all calculation processes are carried out within the processing unit. This is being carried out and the results are directly provided to the operator via the user interface. Therefore, the communication module is one of the preferred applications of the invention. It is not essential for the implementation of the basic operating principle. Connection for securely fixing the pad to the Computed Tomography (CT) scanner table. Connecting elements are used. These elements allow the pad to shift position during measurement. It prevents the reference coordinate system from being compromised. The fastening element is Velcro. connection, clip connection, screw connection or any combination thereof This can be achieved using different Computed Tomography table geometries. Different fasteners can be used or combined to ensure this. It can be used. Thanks to its detachable connection structure, the system can be used on any existing devices. It can be assembled and disassembled quickly without requiring any permanent mechanical changes. The system's operation begins with connecting the pad to the Computed Tomography (CT) scanner. Once the pad is secured to the table using the fasteners, the system switches on and Initial checks are performed by the processing unit. During this stage, the sensors... It is confirmed to be operational, with zero point corrections if necessary. The process is underway and the system is being prepared for measurement. The patient is then placed on the pad. The patient's body weight is transferred onto the pad. Non-transmittable force sensors detect load values ​​at each measurement point, motion The sensor simultaneously monitors the patient's linear and angular movements. It begins. All data obtained from the sensors is processed through the electronic layer. It is being transferred to the relevant unit. The processing unit primarily processes raw data from sensors using a filtering module. It reduces measurement noise and applies necessary corrections. Then, the force... 14 Using the load distribution obtained from the sensors, the patient's balance on the mediolateral axis is determined. The equilibrium point is calculated. The calculated equilibrium point is the reference center defined in the system. The amount of deviation of the patient from the center is determined by comparing it to this point. The assessment results numerically indicate how much the patient has shifted to the right or left. is being calculated. Simultaneously, data from the motion sensor is analyzed and the patient's measurements are taken. Whether or not it moves during this process is determined. The amount of movement is defined by the system. The usability of the measurement is evaluated by comparing it with reliability criteria. Movement The centering result is considered valid if the level is within acceptable limits. The system measures if the level of movement exceeds the reliability limits. It can invalidate the result and request the operator to perform a new measurement. They may request it. When the measurement is found to be reliable, the processing unit sends the patient's sliding direction and information to the user interface. It conveys the amount of slippage. The operator, according to the direction information shown in the user interface... moving the patient in the appropriate direction and readjusting according to the specified millimeter value. It is positioning itself. If necessary, the system will perform a new measurement. This reconfirms whether the patient is located on the reference center line. Once the patient centering process is complete, the system will start the scan on the user interface. The information indicating that it is ready for a Computed Tomography scan can be displayed. Before proceeding, it was confirmed that the patient was in the appropriate position on the mediolateral axis. This workflow reduces operator-dependent variations and improves patient performance. Positioning is being standardized, the possibility of repeated shots is being reduced, and imaging is being improved. This ensures that the process is carried out in a more reliable manner. The applications of the invention described above are exemplary, and the components described herein are not applicable to all applications of the invention. shape, dimensions, layouts, communication methods, sensor types, software algorithms And electronic architectures can be modified according to application requirements. Experts in the field. Such changes that can be made by [the party] fall within the scope of protection defined in the claims. As long as it does not go beyond its scope, it is considered to be within the scope of the invention.

Claims

1. The invention relates to the examination of the patient's positioning during a Computed Tomography (CT) scan. Developed to make the mediolateral centering procedure operator-independent. It is a patient-centered system, the characteristic of which is;  Containing or incorporating force sensors and motion sensors, the measurement surface that the patient comes into contact with and the computerized system A pad designed to be removable for application to the tomography table;  By sensing force data regarding the patient's load distribution on the pad, the process transmitting to the unit and the patient's balance point on the mediolateral axis shift force sensor to enable the determination of the quantity;  Linear and / or angular movements of the patient occurring during measurement A motion sensor detects and transmits motion data to the processing unit;  Analyze data obtained from force sensors and motion sensors. by calculating the amount of mediolateral shift of the patient and informing the operator The processing unit will generate the repositioning output to be presented;  Slip direction and slip amount information generated by the processing unit to transmit to the operator and reposition or remeasure if necessary. user interface to present warnings It is characterized by its inclusion.

2. A patient-centering system in accordance with Claim 1, characterized by direct patient contact. It includes a top layer to create a hygienic and cleanable surface.

3. A patient centering system that complies with Claim 1, and whose feature is; data obtained from sensors. It includes an electronic layer to enable the electronic transmission of data.

4. A patient centering system compliant with Claim 1, characterized by its structural resistance to the pad. It includes a base layer to provide the desired result.

5. It is a patient centering system in accordance with Claim 1, and its feature is; the pad is a Computed Tomography (CT) scanner. It includes a binding layer to enable it to be attached to the table.

6. A patient centering system in accordance with Claim 1, characterized by its placement on the patient's left side. It includes left-side sensors to detect force data related to the distribution.

7. A patient centering system in accordance with Claim 1, characterized by its placement on the patient's right side. It includes right-side sensors to detect force data related to the distribution.

8. It is a patient centering system in accordance with Claim 1, and its feature is that the patient is linearly positioned. It includes an accelerometer to detect its movements. 16 9. It is a patient centering system in accordance with Claim 1, and its feature is that it captures the angular movements of the patient. It contains a gyroscope for sensing.

10. It is a patient centering system that complies with Claim 1, and its feature is that it uses data obtained from sensors. It includes a microcontroller to control the processing of data.

11. It is a patient centering system compliant with Claim 1, and its feature is that it uses data obtained from sensors. It includes an ADC module for converting analog data to digital data.

12. It is a patient centering system that complies with Claim 1, and its features include system software and measurement. It contains memory to store data.

13. It is a patient centering system in accordance with Claim 1, and its feature is that the system is electronic. power management unit to regulate the necessary electrical supply to its components It includes.

14. This is a patient centering system compliant with Claim 1, characterized by its mediolateral shift of the patient. It includes calculation software to determine the amount.

15. It is a patient centering system that complies with Claim 1, and its feature is that it filters sensor data. It includes a filtering module to improve measurement accuracy.

16. It is a patient centering system compliant with Claim 1, and its feature is the calibration of the system. It includes a calibration repository for storing its parameters.

17. This is a patient centering system compliant with Claim 1, characterized by its mediolateral shift of the patient. It includes an OK indicator to show the operator the direction.

18. It is a patient centering system in accordance with Claim 1, and its feature is; patient deviation from the center. It includes a millimeter scale to show the operator the quantity.

19. It is a patient centering system compliant with Claim 1, characterized by its measurement reliability and system. It includes a status indicator to show the operator the status.

20. It is a patient centering system that complies with Claim 1, and its characteristic is that the measurement is not reliable. It includes a warning icon to alert the operator in certain situations.

21. It is a patient centering system in accordance with Claim 1, and its feature is that it monitors the system's operational status. It includes an LED indicator to provide visual information.

22. It is a patient centering system in accordance with Claim 1, and its feature is that the system is user-controlled. It includes a control button to allow it to be controlled.

23. It is a patient centering system in accordance with Claim 1, and its feature is; a processing unit and a computerized system. Communication to enable data communication between the tomography device or external systems. It includes the module.

24. It is a patient centering system in accordance with Claim 1, and its feature is; the pad is a Computed Tomography scanner. It includes a fastening element to allow it to be attached to the desk. 35 25. The patient centering system is suitable for Request 1 or 24, and its feature is the aforementioned connection. The element is any individual selected from a group containing Velcro, clips, and screws. 17