Inclination correction device for CT (Computed Tomography) skull scanning
By designing a tilt correction device for CT head scanning, the problem of slow tilt speed, excessive tilt times and some CT models do not have the rack rotation function in traditional CT head scanning, automatic angle adjustment is achieved, and scanning convenience and image quality are improved.
Patent Information
- Application Number
- CN202510224524.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-05-23
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In traditional CT head scans, the slow tilt speed of the frame and excessive tilts are likely to cause machine failures, and some CT models do not have the function of rotating the frame, resulting in inconvenient scanning, increased radiation dose and reduced image quality.
A tilt correction device for CT head scanning is designed, including an operating room control device and a scanning room angle tilt correction device. The operation room control device automatically calculates and transmits angle adjustment parameters by obtaining the patient's position image in real time, and the scanning room tilt correction device uses the motor rocker arm mechanism and head accommodation cavity to realize automatic adjustment of the patient's head angle.
It significantly improves the convenience and image quality of CT head scanning, reduces the problems of artifacts, overscans and poor image effects caused by inconvenience, and saves preparation time before scanning.
Smart Images
Figure CN120022016A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of auxiliary medical treatment, in particular to a tilt correction device for CT head scanning. Background Art
[0002] Head CT (also known as brain CT), as a widely used imaging examination method, plays a vital role in evaluating the internal structure of the head and assisting doctors in diagnosing internal diseases and injuries of the head. This technology, with its non-invasive and high-resolution characteristics, provides strong support for the diagnosis of neurological and surgical diseases. Through head CT scans, doctors can not only obtain detailed information about the internal structure of the head to make accurate diagnoses, but also provide detailed brain structure references for neurosurgery, assisting in the formulation of surgical plans. In short, head CT occupies an important position in the field of internal head structure assessment and disease diagnosis with its safety, rapidity and accuracy.
[0003] During the head CT scan, the selection of the scanning baseline is crucial. At present, the main scanning baselines include the auditory canthal line, the auditory orbital line and the auditory eyebrow line. Among them, the auditory orbital line connects the upper edge of the external auditory foramen and the lower edge of the orbit. It is a position where patients feel more comfortable and medical care is more convenient; the auditory canthal line is the most commonly used scanning baseline, connecting the external auditory foramen and the outer canthus of the eye. Most head scans use this baseline; and the auditory eyebrow line is the line connecting the midpoint of the upper eyebrow edge and the external auditory foramen. The auditory canthal line and the auditory orbital line are at an angle of about 12°-15°, and the auditory eyebrow line and the auditory canthal line are at an angle of about 10°.
[0004] Traditionally, the baseline of the canthal line scan is achieved by tilting the gantry of the CT machine at a certain angle and scanning with the canthal line as the starting line. However, this operation method has many problems in clinical applications, such as the slow tilting speed of the gantry resulting in a waste of time, too many tilting times easily causing machine failure, and some models do not have the gantry rotation function. Therefore, clinical medical staff tend to choose the orbital line for scanning, although doing so will result in more scanning sites (such as both sinuses and orbits are scanned), increased radiation dose to patients (especially the radiation-sensitive lens), reduced cranial cavity display range, and increased beam hardening and partial volume effect artifacts of the skull base.
[0005] Secondly, with the development of CT technology, wide-body CT is being used more and more, and has gradually replaced a considerable portion of traditional CT. However, wide-body CT usually does not have the function of gantry tilting, and clinical medical staff cannot use the gantry tilting method to perform canthal line scanning, which makes the above-mentioned problems more prominent. Summary of the invention
[0006] The object of the present invention is to provide a tilt correction device for CT head scanning to solve the problems raised in the above background technology.
[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a tilt correction device for CT head scanning, comprising an operating room control device and a scanning room angle tilt correction device; The operating room control device is installed or placed in the CT operating room, and the interface is connected to the CT machine to obtain the patient's body position image in real time; The scanning room tilt correction device is installed on the CT operating bed, and the scanning room tilt correction device includes a motor rocker mechanism and a head accommodating cavity; the motor rocker mechanism includes a motor, a rocker link assembly 1, and a rocker link assembly 2, the motor is connected to the fixing frame through a reducer for fixing, the reducer extension shaft is connected to the rocker link assembly 1, and the rocker link assembly 1 and the rocker link assembly 2 are fixed by screws or rivets; the rocker link assembly 2 is fixed to the slider by screws, and the slider slides in the slide rail, the power supply communication module of the motor rocker mechanism receives the real-time angle information transmitted by the operating room control device to adjust the patient's head angle in real time, and a position sensor is attached to the rocker link assembly 2; the link assembly 2 is connected to the head accommodating cavity by a fixing screw; The head accommodating cavity comprises a platform buffer portion at the front end and a head placement platform, and the platform buffer portion is made of flexible plastic.
[0008] Furthermore, a protective sleeve is provided on the outside of the head accommodating cavity, and the protective sleeve includes a sponge supporting layer in contact with the head and an inner lining rubber layer in contact with the head placement platform. An inflatable cavity is provided between the inner lining rubber layer and the sponge supporting layer, and bamboo charcoal filling particles are filled inside the inflatable cavity.
[0009] Furthermore, the power supply mode of the operating room control device can be selected from 220V power supply or rechargeable battery mode, and three options are provided: auditory orbital line adjustment, auditory canthal line adjustment, and auditory eyebrow line adjustment; after the operator selects the corresponding adjustment option, the operating room control device calculates and obtains the angle adjustment parameters based on the angle information comparison in the body position image, and transmits the adjustment instructions to the scanning room tilt correction device through at least one of Bluetooth and WI-FI direct connection. After the correction is completed, the scanning room tilt correction device transmits the adjusted angle back to the operating room control device.
[0010] Furthermore, the operating room control device supports an independent operation mode. When not connected to a CT machine, the operation interface displays the existing angle, and the operator can input angle adjustment commands according to visual observations. The angle adjustment range does not exceed 25 degrees.
[0011] Furthermore, the scanning room tilt correction device performs motor control work only when the CT scanning is not started, the power supply is a rechargeable battery, the interface form is TYPE-C, and the adjustable angle is limited to 0-25°.
[0012] Furthermore, the operating room control device also includes a data storage module for storing body position images, angle adjustment parameters and corresponding scan result images of previously scanned patients; the data storage module can back up and export data through a USB interface or a network interface, making it convenient for medical staff to conduct case analysis and research.
[0013] Furthermore, the displacement sensor installed at the connection between the motor rocker arm mechanism and the head accommodating cavity is used to measure the angle between the patient's head and the CT operating bed, and the power supply communication module transmits the angle information to the operating room control device when power is turned on, and the information is transmitted again when the angle changes ≥0.5 degrees.
[0014] Furthermore, the protective sleeve is provided with an inflation port for inflating or deflating the inflation cavity, and the filling amount of bamboo charcoal filling particles filled in the inflation cavity is 50%-70%.
[0015] Furthermore, a plurality of air holes are provided on the surface of the sponge support layer to improve the comfort of the patient during use.
[0016] Compared with the prior art, the present invention has the following beneficial effects: The tilt correction device for CT head scanning provided by the present invention significantly improves the convenience and image quality of CT head scanning through the automatic angle adjustment function, provides clinical medical staff with a more efficient and accurate scanning tool, thereby reducing the problems of artifacts, overscanning, and image degradation caused by inconvenient operation. The operating room control device provides three adjustment options: orbital line, canthal line, and eyebrow line. It can automatically calculate adjustment parameters and transmit instructions according to the body position image, and also supports an independent operation mode. Clinical medical staff can flexibly choose the operation mode and can quickly adjust the patient's head to a suitable scanning angle without complicated operations, which greatly saves the preparation time before scanning and significantly improves the convenience of CT head scanning. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is an <automatic posture adjustment> interface of an operating room control device of a tilt correction device for head scanning of the present invention; Figure 2 It is a <manual posture adjustment> interface of an operating room control device of a tilt correction device for head scanning of the present invention; Figure 3 It is a schematic diagram of the overall structure of a scanning room tilt correction device of a tilt correction device for head scanning of the present invention; Figure 4 It is a schematic diagram of the structure of the motor rocker mechanism of the scanning room tilt correction device; Figure 5 It is a schematic diagram of the 0 degree angle of the scanning room tilt correction device; Figure 6 This is a schematic diagram of a 25-degree angle of the scanning room tilt correction device; Figure 7 A schematic diagram of the head receiving chamber of the scanning room tilt correction device; Figure 8 A schematic diagram of the installation of the head receiving cavity protective cover of the scanning room tilt correction device; Fig. 9 Schematic diagram of the head receiving cavity protective cover of the scanning room tilt correction device.
[0018] Figure numerals: 1. motor rocker arm mechanism; 2. head accommodating cavity; 3. protective cover; 101. motor; 102. power supply and communication module; 103. fixing frame; 104. reducer; 105. rocker arm connecting rod assembly one; 106. rocker arm connecting rod assembly two; 107. position sensor; 108. slider; 109. slide rail; 201. head placement platform; 202. platform buffer part; 301. sponge support layer; 302. inner lining rubber layer; 303. inflatable cavity; 304. bamboo charcoal filling particles. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0020] See also Figure 1-9 The present invention provides a technical solution: a tilt correction device for CT head scanning, comprising an operating room control device and a scanning room angle tilt correction device; the convenience and image quality of CT head scanning can be significantly improved by automatically adjusting the angle, providing clinical medical staff with a more efficient and accurate scanning tool, thereby reducing the problems of artifacts, overscanning, and image effect degradation caused by inconvenient operation. The operating room control device can be powered by 220V or rechargeable battery, and provides three options: orbital line adjustment, canthal line adjustment, and eyebrow line adjustment. After the operator selects the corresponding adjustment option, the operating room control device calculates the angle adjustment parameters based on the angle information in the body image, and transmits the adjustment instructions to the scanning room tilt correction device through at least one of Bluetooth and WI-FI direct connection. After the correction is completed, the scanning room tilt correction device transmits the adjusted angle back to the operating room control device. The operating room control device supports independent operation mode. When it is not connected to the CT machine, the operation interface displays the current angle. The operator can input the angle adjustment command according to the visual observation situation. The angle adjustment range does not exceed 25 degrees. The scanning room tilt correction device only performs motor control work when the CT scan is not started. The power supply method is rechargeable battery, the interface form is TYPE-C, and the adjustable angle is limited to 0-25°. The operating room control device also includes a data storage module for storing body position images, angle adjustment parameters and corresponding scan result images of previously scanned patients; the data storage module can back up and export data via a USB interface or a network interface, making it convenient for medical staff to conduct case analysis and research.
[0021] The operating room control device is installed or placed in the CT operating room, and the interface is connected to the CT machine to obtain the patient's body position image in real time; Figure 1 The figure shows the <Automatic Posture Adjustment> page displayed by the operating room control device. The page provides three options: auditory orbital line, auditory canthal line, and auditory eyebrow line. For example, after selecting the <auditory canthal line> option, a prompt "Do you confirm the adjustment" will be displayed. After clicking and confirming, the control display module will calculate the patient's current head angle from the real-time body position image obtained from the CT operating host, and compare it with the angle to be adjusted to calculate the adjustment angle and transmit it to the scanning room tilt correction device via Bluetooth. The scanning room tilt correction device adjusts the angle and transmits the "adjustment completed" message back to the operating room control device after the adjustment is completed. The operating room control device obtains the real-time body position image to determine whether the adjustment is completed. If the adjustment is not completed, the information is compared and sent again for adjustment. If the adjustment is confirmed to be completed, the message "The angle has been adjusted to the auditory canthal line, and scanning can begin" will be prompted.
[0022] In addition, the operating room control device may not be connected to the CT operating host interface to avoid the problem that some host interfaces are not open to the outside. At this time, the angle acquisition information is realized by the scanning room tilt device. The scanning room tilt correction device is integrated with a position sensor, so that the corresponding angle information can be obtained. The detailed description will be introduced later. At this time, the operation method is still to select a certain option, but the angle information is no longer provided by the CT operating host, but by the scanning room tilt correction device. The final judgment standard for confirming whether the patient's head position reaches the scanning baseline needs to be judged by clinical medical staff. After the adjustment is completed, the clinical medical staff needs to visually confirm whether the angle on the real-time body position image on the CT operating host is adjusted in place and decide whether to start the scan.
[0023] Additionally, the operating room control device can also provide Figure 2 The <Manual Posture Adjustment Page> shown provides information such as <Existing Angle> and <Input Angle>, and provides more accurate angle adjustment information. Clinical medical staff can provide specific angle information based on their real-time judgment, and are no longer limited to the three options of automatic adjustment. More customized and precise operations can be achieved to achieve better scanning and better image results. The present invention recommends that users use the <Manual Posture Adjustment> function more when the CT operation host interface cannot be connected to avoid poor adjustment results due to errors in the angle information brought by the position sensor of the device and the real-time body position image information.
[0024] The scanning room tilt correction device is installed on the CT operating bed, and the scanning room tilt correction device includes a motor rocker mechanism 1 and a head accommodating chamber 2; the motor rocker mechanism 1 includes a motor 101, a rocker link assembly 1 105, and a rocker link assembly 2 106. The motor 101 is connected to the fixing frame 103 through a reducer 104 for fixing. The reducer 104 extends a shaft to connect with the rocker link assembly 1 105. The rocker link assembly 1 105 is fixed to the rocker link assembly 2 106 by screws or rivets; the rocker link assembly 2 106 is fixed to the slider 108 by screws, and the slider 108 slides in the slide rail 109. The power supply communication module 102 of the motor rocker mechanism 1 receives the real-time angle information transmitted by the operating room control device to adjust the patient's head angle in real time. The rocker link assembly 2 106 is attached with a position sensor 107; the link assembly 2 106 is connected to the head accommodating chamber 2 by fixing screws; The head receiving chamber 2 includes a platform buffer portion 202 at the front end and a head placement platform 201; When in use, the patient lies flat on the CT operating table, and the head is placed in the head receiving cavity 2. Figure 7As shown, the head is more accurately placed on the head placement platform 201, and the neck is adapted to the platform buffer 202. The head placement platform 201 is made of non-metallic high-strength materials suitable for X-ray imaging, including carbon fiber and polycarbonate (PC), and the outer layer is wrapped with skin-friendly flexible materials; the platform buffer 202 is made of flexible plastic, so that when the head placement platform rotates with the motor rocker mechanism, it fits tightly with the neck to ensure the patient's comfort; the width of the head accommodating cavity 2 is 1.5-2 times the size of a normal head, so as to leave enough space to avoid artifacts caused by the metal material of the motor rocker mechanism.
[0025] The displacement sensor 107 installed at the connection between the motor rocker mechanism 1 and the head accommodating cavity 2 is used to measure the angle between the patient's head and the CT operating bed, and the power supply communication module 102 transmits the angle information to the operating room control device when the power is turned on, and the information is transmitted again when the angle changes by ≥0.5 degrees. After obtaining the adjustment angle, the power supply communication module 102 calculates and outputs a control signal to the motor 101, and the motor 101 starts to rotate to drive the reducer 104. The output shaft is connected to the rocker arm connecting rod assembly 1 105, thereby driving the rocker arm connecting rod assembly 2 106 to rotate. The rocker arm connecting rod assembly 2 106 is connected to the head accommodating cavity 2, thereby realizing the function of adjusting the patient's head angle. A position sensor 107 is attached to the rocker arm connecting rod assembly 2 106, which can obtain the real-time angle, support the power supply communication module to adjust the angle, provide a comparison and correction function when the real-time body position image can be obtained, and provide angle information when the real-time body position image cannot be obtained; such as Figure 5 The figure shows the position of the motor rocker mechanism at an angle of 0 degrees. Figure 6 The figure shows the position of the motor rocker arm mechanism at an angle of 25 degrees. The preferred design angle of the device is between 0 and 25 degrees, which does not mean that the device cannot be designed to adjust the angle to be greater than 25 degrees or less than 0 degrees.
[0026] A protective cover 3 is provided on the outside of the head accommodating cavity 2. The protective cover 3 includes a sponge supporting layer 301 in contact with the head and an inner lining rubber layer 302 in contact with the head placement platform 201. An inflatable cavity 303 is provided between the inner lining rubber layer 302 and the sponge supporting layer 301, and the inflatable cavity 303 is filled with bamboo charcoal filling particles 304.
[0027] The protective sleeve 3 is provided with an air inlet for inflating or deflating the air-filled cavity 303. When the patient's head is placed in the head receiving cavity 2, the medical staff can adjust the air pressure in the air-filled cavity 303 through the air inlet according to the specific situation of the patient's head. When inflated, the airbag swells up to give the head a certain support force; when deflated, the hardness of the airbag can be flexibly adjusted to meet the needs of different patients; and the filling amount of the bamboo charcoal filling particles 304 filled in the air-filled cavity 303 is 50%-70%. This filling ratio can not only ensure that the bamboo charcoal filling particles 304 have enough space for movement, but also ensure that they play an effective supporting role when the angle changes. When the scanning room tilt correction device adjusts the angle of the patient's head, the bamboo charcoal filling particles 304 will gather to the lower part due to gravity. When the head tilts to one side, the bamboo charcoal filling particles 304 on that side will gradually accumulate to form a more compact support area, which, together with the airbag structure of the inflatable cavity 303, provides a stable support for the head from multiple angles, effectively preventing the head from shaking during scanning and further improving the accuracy of the scan.
[0028] The surface of the sponge support layer 301 is provided with a plurality of ventilation holes to improve the comfort of the patient when using it. The ventilation holes can increase air circulation, reduce the stuffiness and humidity caused by long-term contact of the patient's head, and greatly improve the comfort of the patient when using it.
Claims
1. A tilt correction device for CT head scanning, characterized in that: It includes two parts: operating room control device and scanning room angle tilt correction device; The operating room control device is installed or placed in the CT operating room, and the interface is connected to the CT machine to obtain the patient's body position image in real time; The scanning room tilt correction device is installed on a CT operating bed, and comprises a motor rocker arm mechanism (1) and a head accommodating chamber (2); the motor rocker arm mechanism (1) comprises a motor (101), a rocker arm connecting rod assembly 1 (105), and a rocker arm connecting rod assembly 2 (106); the motor (101) is connected to a fixing frame (103) via a reducer (104) for fixing; a shaft extending from the reducer (104) is connected to the rocker arm connecting rod assembly 1 (105); the rocker arm connecting rod assembly 1 (105) is connected to the rocker arm connecting rod assembly 2 (106); The second arm link assembly (106) is fixed by screws or rivets; the second rocker arm link assembly (106) and the slider (108) are fixed by screws, the slider (108) slides in the slide rail (109), the power supply communication module (102) of the motor rocker arm mechanism (1) receives real-time angle information transmitted by the operating room control device to adjust the patient's head angle in real time, and a position sensor (107) is attached to the second rocker arm link assembly (106); the second link assembly (106) is connected to the head accommodating cavity (2) by fixing screws; The head accommodating cavity (2) comprises a platform buffer portion (202) at the front end and a head placement platform (201), and the platform buffer portion (202) is made of flexible plastic.
2. The tilt correction device for CT head scanning according to claim 1, characterized in that: The head accommodating cavity (2) is covered with a protective sleeve (3) on the outside, the protective sleeve (3) comprising a sponge support layer (301) in contact with the head and an inner lining rubber layer (302) in contact with the head placement platform (201), an air-filled cavity (303) is provided between the inner lining rubber layer (302) and the sponge support layer (301), and the air-filled cavity (303) is filled with bamboo charcoal filling particles (304).
3. The tilt correction device for CT head scanning according to claim 1, characterized in that: The power supply mode of the operating room control device can be selected from 220V power supply or rechargeable battery mode, and three options are provided: auditory orbital line adjustment, auditory canthal line adjustment, and auditory eyebrow line adjustment; after the operator selects the corresponding adjustment option, the operating room control device calculates and obtains the angle adjustment parameter based on the angle information comparison in the body position image, and transmits the adjustment instruction to the scanning room tilt correction device through at least one of Bluetooth and WI-FI direct connection. After the correction is completed, the scanning room tilt correction device transmits the adjusted angle back to the operating room control device.
4. The tilt correction device for CT head scanning according to claim 1, characterized in that: The operating room control device supports an independent operation mode. When not connected to a CT machine, the operation interface displays the existing angle, and the operator can input angle adjustment commands based on visual observations. The angle adjustment range does not exceed 25 degrees.
5. The tilt correction device for CT head scanning according to claim 1, characterized in that: The scanning room tilt correction device performs motor control work only when the CT scan is not started. The power supply is a rechargeable battery, the interface form is TYPE-C, and the adjustable angle is limited to 0-25°.
6. The tilt correction device for CT head scanning according to claim 1, characterized in that: The operating room control device also includes a data storage module for storing body position images, angle adjustment parameters and corresponding scan result images of previously scanned patients; the data storage module can back up and export data via a USB interface or a network interface, making it convenient for medical staff to conduct case analysis and research.
7. The tilt correction device for CT head scanning according to claim 1, characterized in that: The displacement sensor (107) installed at the connection between the motor rocker mechanism (1) and the head accommodating cavity (2) is used to measure the angle between the patient's head and the CT operating bed, and when power is turned on, the power supply communication module (102) transmits the angle information to the operating room control device, and transmits the information again when the angle changes by ≥0.5 degrees.
8. The tilt correction device for CT head scanning according to claim 2, characterized in that: The protective sleeve (3) is provided with an inflation port for inflating or deflating the inflation cavity (303), and the filling amount of the bamboo charcoal filling particles (304) filled in the inflation cavity (303) is 50%-70%.
9. The tilt correction device for CT head scanning according to claim 2, characterized in that: The surface of the sponge support layer (301) is provided with a plurality of ventilation holes to improve the comfort of the patient during use.