WO2018132969A1 - Machine à rayons x, procédé et dispositif de réglage du centre de rotation d'une machine à rayons x - Google Patents

Machine à rayons x, procédé et dispositif de réglage du centre de rotation d'une machine à rayons x Download PDF

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Publication number
WO2018132969A1
WO2018132969A1 PCT/CN2017/071528 CN2017071528W WO2018132969A1 WO 2018132969 A1 WO2018132969 A1 WO 2018132969A1 CN 2017071528 W CN2017071528 W CN 2017071528W WO 2018132969 A1 WO2018132969 A1 WO 2018132969A1
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Prior art keywords
ray
rotating arm
rotation
rotation center
target portion
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PCT/CN2017/071528
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English (en)
Chinese (zh)
Inventor
刘勇
熊璟
梁闳肆
甘志坚
夏泽洋
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中国科学院深圳先进技术研究院
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Priority to PCT/CN2017/071528 priority Critical patent/WO2018132969A1/fr
Publication of WO2018132969A1 publication Critical patent/WO2018132969A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment

Definitions

  • the embodiment relates to a signal processing technology, for example, to an X-ray machine, an X-ray machine rotation center adjustment method and device.
  • C-arm X-ray machine is widely used in the examination of patients' lesions.
  • the C-arm X-ray machine mainly applies the principle of fluoroscopic imaging to image the patient's lesions.
  • the embodiment provides an X-ray machine, an X-ray machine rotation center adjustment method and device, to optimize the X-ray machine in the related art, and simplifies the operation required to align the X-ray machine to the region of interest.
  • the embodiment provides an X-ray machine, including: a rotating arm, an X-ray generator, a contour determining component, a processor, a display device, and a position moving component;
  • the X-ray generator and the contour determining component are both disposed on the rotating arm;
  • the rotating arm is configured to drive the X-ray generator and the contour determining component to rotate according to a rotation control command sent by the processor;
  • the contour determining component is configured to send a substitute X-ray signal for scanning according to a signal control instruction sent by the processor, and send the scan result to the processor;
  • the processor is configured to control a rotating arm of the X-ray machine to drive the contour determining component to rotate around a target portion of the object to be scanned; during the rotation of the rotating arm, the contour determining component is controlled to send a substitute X-ray signal pair Performing a rotation scan on the target portion, and acquiring a rotation scan result; drawing a surface contour curve of the target portion according to the rotation scan result, and determining a reference rotation center of the rotation arm in the surface contour curve; a reference rotation center and a contour curve at the surface Selecting a target rotation center, determining a position adjustment strategy of the rotation arm, and performing position adjustment on the rotation arm according to the position adjustment strategy to adjust a rotation center of the rotation arm to the target rotation center;
  • the display device is configured to display a surface contour curve of the target portion generated by the processor, and send the selected target rotation center of the surface contour curve to the processor;
  • the position moving component is configured to adjust a spatial position of the rotating arm according to a position movement instruction sent by the processor.
  • the embodiment further provides an X-ray machine rotation center adjustment method, which is applied to the processor of the X-ray machine according to the embodiment, and the method includes:
  • the contour determining unit is configured to send a substitute X-ray signal to perform a rotational scan on the target portion, and obtain a rotation scan result;
  • the embodiment further provides an X-ray machine rotation center adjustment device, the device comprising: a rotation control module, a rotation scan result acquisition module, a reference rotation center determination module, and a rotation center adjustment module;
  • the rotation control module is configured to control the rotating arm of the X-ray machine to drive the contour determining component to rotate around the target portion of the object to be scanned;
  • a rotation scan result obtaining module configured to control the contour determining component to send a substitute X-ray signal to perform a rotation scan on the target portion during the rotation of the rotating arm, and obtain a rotation scan result;
  • a reference rotation center determining module configured to draw a surface contour curve of the target portion according to the rotation scan result, and determine a reference rotation center of the rotating arm in the surface contour curve;
  • a rotation center adjustment module configured to determine a position adjustment strategy of the rotation arm according to a reference rotation center and a target rotation center selected by the user in the surface contour curve, and position the rotation arm according to the position adjustment strategy Adjusting to adjust the center of rotation of the rotating arm to the Target rotation center.
  • the embodiment further provides a non-transitory computer readable storage medium storing computer executable instructions for performing the X-ray machine rotation center adjustment method.
  • the X-ray machine and the X-ray machine rotation center adjusting method and device provided by the embodiment control the X-ray machine's rotating arm and the contour determining component to scan around the target part by the processor in the X-ray machine to obtain the surface contour of the target part.
  • the curve determines the reference rotation center of the rotating arm, determines the position adjustment strategy according to the reference rotation center and the target rotation center, adjusts the rotation center of the rotating arm to the target rotation center, optimizes the X-ray machine in the related art, and realizes the X-ray
  • the precise positioning of the center of rotation of the rotating arm of the machine in the contour of the target part requires only one X-ray scan to accurately obtain the X-ray image generated by the rotation of the position of interest in the target area, avoiding multiple X-ray scans. Reduce radiation dose and simplify operation.
  • FIG. 1a is a structural diagram of an X-ray machine provided in Embodiment 1;
  • FIG. 1b is a structural diagram of a contour determining component provided in Embodiment 1;
  • FIG. 1c is a structural diagram of a contour determining component provided in Embodiment 1;
  • FIG. 1d is a structural diagram of a contour determining component provided in Embodiment 1;
  • FIG. 1e is a structural diagram of a position moving component provided in Embodiment 1;
  • FIG. 1f is a schematic structural view of a C-arm X-ray machine provided in Embodiment 1;
  • FIG. 2 is a flow chart of a method for adjusting a rotation center of an X-ray machine according to Embodiment 2;
  • FIG. 3 is a flow chart of a method for adjusting a rotation center of an X-ray machine according to Embodiment 3;
  • FIG. 4a is a flowchart of a method for adjusting a rotation center of an X-ray machine according to Embodiment 4;
  • 4b is a schematic diagram of a method for calculating a distance value of an X-ray light exit port of an X-ray generator reaching a contour surface of a target portion according to Embodiment 4;
  • 4c is a schematic diagram of parameters in a rotating arm of an X-ray machine provided in Embodiment 4.
  • 4d is a schematic diagram of an acquisition surface profile curve provided in Embodiment 4.
  • FIG. 4e is a schematic diagram of a position adjustment strategy of an X-ray machine provided in Embodiment 4.
  • 4f is a schematic diagram of an X-ray scanning three-dimensional imaging provided in Embodiment 4.
  • 4g is a schematic diagram of a termination angle of an X-ray scan provided in Embodiment 4.
  • FIG. 5 is a structural diagram of an X-ray machine rotation center adjusting device according to Embodiment 5.
  • the present embodiment is mainly applied to an X-ray machine equipped with a rotating arm.
  • the basic working process is: firstly, the target part of the object to be scanned that needs to be imaged is placed in the X-ray field of view, and the distance between the target part and the X-ray source is adjusted, and then the position of interest in the target part is rotated.
  • the center point controls the rotating arm to move in a circular motion in space, and each time the rotating arm rotates to a fixed angle, the X-ray source is used to expose the X-ray image, and the X-ray detector acquires an X-ray two-dimensional image.
  • a series of two-dimensional maps, and finally the computer constructs a three-dimensional map of these continuous two-dimensional maps according to a three-dimensional reconstruction algorithm.
  • the purpose is to adjust the center of rotation of the rotating arm to the position of interest.
  • the inventor proposes that before the X-ray signal is transmitted by using the X-ray machine, the X-ray light exit port is sent to transmit a non-radiated substitute X-ray signal to scan the target portion, and the X-ray light exit port is obtained by the substitute X-ray signal.
  • the distance to the surface of the target portion can be obtained, and the surface contour of the target portion can be acquired during one rotation scanning, and at the same time, the position of the reference rotation center of the rotating arm in the surface contour of the target portion can be determined, and then the user can be
  • the target rotation center selected on the surface contour of the target portion accurately aligns the X-ray machine with the above-mentioned actual interest position. Only one X-ray scan is required to obtain an X-ray image centered on the position of interest in the target area, avoiding multiple X-ray scans. Trace, reduce radiation dose and simplify operation.
  • FIG. 1a is a structural diagram of an X-ray machine provided in Embodiment 1. As shown in FIG. 1a, the X-ray machine includes a rotating arm 11, an X-ray generator 12, a contour determining unit 13, a processor 14, a display device 15, and a position moving member 16.
  • the X-ray generator 12 and the contour determining component 13 are both disposed on the rotating arm;
  • the rotating arm 11 is arranged to drive the X-ray generator 12 and the contour determining component 13 to rotate according to a rotation control command sent by the processor 14;
  • the object to be scanned is placed at an appropriate position in the opening of the rotating arm 11, and the X-ray generator 12 and the contour determining member 13 can be rotated around the object to be scanned.
  • the contour determining component 13 is configured to send a substitute X-ray signal for scanning according to a signal control command sent by the processor 14, and send the scan result to the processor 14;
  • the contour determining unit 13 transmits a substitute X-ray signal to scan the object to be scanned.
  • the processor 14 is configured to control the rotating arm 11 of the X-ray machine to drive the contour determining component 13 to rotate around the target portion of the object to be scanned; during the rotation of the rotating arm 11, the contour determining component 13 is controlled to transmit Performing a rotation scan on the target portion instead of the X-ray signal, and acquiring a rotation scan result; drawing a surface contour curve of the target portion according to the rotation scan result, and determining the rotation arm 11 in the surface contour curve a reference rotation center; determining a position adjustment strategy of the rotation arm 11 according to a target rotation center selected by the user in the surface contour curve, and performing position adjustment on the rotation arm 11 according to the position adjustment strategy to The center of rotation of the rotating arm 11 is adjusted to the target center of rotation.
  • the display device 15 is configured to provide a surface contour curve of the target portion generated by the processor 14 to a user, and send a target rotation center selected by the user in the surface contour curve to the processor 14 ;
  • the position moving component 16 is configured to adjust a spatial position of the rotating arm according to a position movement command sent by the processor 14.
  • the contour determining component includes at least one X-ray light exit opening 121 disposed proximate to the X-ray generator 12.
  • the distance measurement signal sent by the ranging sensor 130 can simulate the transmission of the X-ray light exit port 121.
  • the above arrangement is simple in design and small in calculation amount, but the disadvantage is that there is a certain displacement error between the distance measuring sensor 130 and the X-ray light exit port 121, and therefore, the final reference rotation center of the rotating arm is at the surface contour of the target portion.
  • the location of the location has a certain error.
  • the contour determining component may include: X-ray generation respectively disposed on the rotating arm 11 A distance measuring sensor 131 on the left and right sides of the X-ray light exit port 121 of the device 12.
  • the distance from the left ranging sensor to the center of the X-ray exit of the X-ray generator is the same as the distance from the center of the X-ray exit of the X-ray generator to the X-ray generator, wherein
  • the left side is the first side
  • the right side is the second side.
  • the distance between the two sensors 131 reaching the surface of the target portion can be simulated by the distance between the two sensors 131 reaching the surface of the target portion.
  • the calculation accuracy of the position of the reference rotation center can be improved.
  • the ranging sensor may be a laser ranging sensor, and the substitute X-ray signal is a laser ranging signal.
  • the contour determining component includes: a distance measuring sensor 131 disposed on the left and right sides of the X-ray light emitting port 121 of the X-ray generator 12 on the rotating arm 11, and a distance measuring sensor 132 on the upper and lower sides. And a horizontal angle meter 17 disposed on the side of the X-ray generator 12, wherein the upper side is the third side and the lower side is the fourth side in the embodiment and the following embodiments.
  • the processor is configured to control up, down, left, and right (in order, first side, second side, third side, and fourth side) before controlling the rotating arm to drive the contour determining component to rotate around the target portion of the object to be scanned
  • the ranging sensor transmits a laser ranging signal, so that the user adjusts the target portion to the field of view of the X-ray generator according to the four laser points displayed on the object to be scanned.
  • the object to be scanned is placed in the opening of the rotating arm 11, it is not possible to accurately ensure that the target portion can be accurately positioned within the field of view of the X-ray generator 12. Therefore, the four laser points displayed on the object to be scanned by the laser ranging signal are transmitted by the ranging sensors of the upper, lower, left, and right sides, and the target portion can be accurately adjusted to the field of view of the X-ray generator. To simplify the scanning operation.
  • FIG. 1e an optional structural diagram of the position moving component is shown in FIG. 1e, as shown in FIG. 1e.
  • the position moving member includes: a horizontal moving seat 161 connected to the rotating arm 11, and a lifting column 162 at the bottom of the horizontal moving seat;
  • the horizontal moving seat 161 is arranged to adjust the horizontal position of the rotating arm
  • the lifting column is arranged to adjust the vertical position of the rotating arm.
  • the rotating arm may be a C-arm or an O-arm.
  • FIG. 1f shows a schematic structural view of a C-arm X-ray machine.
  • the C-arm X-ray machine includes a C-arm 101, an X-ray generator 102, and contour determination.
  • the X-ray machine provided in this embodiment sends a substitute X-ray signal through the contour determining component, performs a rotational scan on the target portion of the object to be scanned by using the rotating arm, draws a surface contour curve of the target portion, determines a reference rotation center, and combines the target rotation center.
  • the position moving component adjusts the rotation center of the rotating arm to the target rotation center, thereby realizing precise positioning of the rotation center of the X-ray machine rotating arm in the contour of the target portion, instead of the X-ray signal, there is no radiation to the object to be scanned, only need An X-ray scan can accurately obtain the X-ray image generated by the rotation of the position of interest in the target area, avoiding multiple X-ray scans, reducing the radiation dose, and simplifying the operation.
  • FIG. 2 is a flow chart of a method for adjusting a rotation center of an X-ray machine according to Embodiment 2, which may be performed by an X-ray machine rotation center adjustment device, which may be implemented by software and/or hardware, and may be integrated into, for example, The processor of the X-ray machine of the first embodiment.
  • the method in this embodiment may include:
  • the contour determining component is controlled to send a substitute X-ray signal to perform a rotational scan on the target portion, and obtain a rotation scan result.
  • the contour determining unit acquires the rotation scan result by scanning the target portion of the object to be scanned.
  • the alternative X-ray signal can be any type of signal that can be used for positioning with low radiation, such as a laser signal or an ultrasonic signal.
  • S240 Determine a position adjustment strategy of the rotating arm according to a reference rotation center and a target rotation center selected by the user in the surface contour curve, and perform position adjustment on the rotating arm according to the position adjustment strategy to The center of rotation of the rotating arm is adjusted to the target center of rotation.
  • the target rotation center selected by the user in the surface contour curve may be the lesion location of the patient.
  • the strategy of moving from the reference center of rotation to the target center of rotation is a position adjustment strategy for the rotating arm. Adjusting the center of rotation of the rotating arm to the target center of rotation allows for accurate scanning of the target site, which may be an X-ray scan.
  • the target portion of the object to be scanned is scanned by the contour determining component, the contour curve of the target portion is obtained, the reference rotation center of the rotating arm is determined, and the rotation center of the rotating arm is adjusted according to the positional relationship between the reference rotation center and the target rotation center to
  • the target rotation center realizes the precise positioning of the rotation center of the X-ray machine rotating arm in the contour of the target part, and only needs one X-ray scanning to accurately obtain the X-ray generated by the rotation of the position of interest in the target part.
  • Figure avoid multiple X-ray scans, reduce radiation dose, and simplify operation.
  • FIG. 3 is a flowchart of a method for adjusting a rotation center of an X-ray machine according to Embodiment 3.
  • the present embodiment is optimized based on the above embodiment.
  • the contour determining component may be changed, and During the rotation of the rotating arm, the contour determining unit is controlled to send a substitute X-ray signal to perform a rotational scan of the target portion, and the obtained rotational scan result becomes: the rotating arm is rotated to a preset rotational position. And controlling the ranging sensors on the left and right sides to transmit a ranging signal as the substitute X-ray signal to obtain distance values of the ranging sensors on the left and right sides reaching the contour surface of the target portion at different rotation positions.
  • the method in this embodiment may include:
  • S310 Control a rotating arm of the X-ray machine to drive the contour determining component to rotate around a target portion of the object to be scanned, where the contour determining component includes left and right sides of the X-ray light exiting port of the X-ray generator disposed on the rotating arm.
  • a distance measuring sensor, and a horizontal angle meter disposed on a side of the X-ray generator.
  • the distance measuring sensors provided on the left and right sides of the X-ray light exiting port of the X-ray generator on the rotating arm may have the same distance to the X-ray light exiting port, or may be unequal, preferably equal. Through the distance between the left and right distance measuring sensors to the target area and the trapezoidal geometric relationship, the X-ray light exit port can be obtained to the target part. the distance.
  • the ranging sensors that control the left and right sides transmit a ranging signal as the substitute X-ray signal to obtain the left and right sides at different rotational positions.
  • the initial angle of the rotating arm to the contour determining member that is, the horizontal angle value of the horizontal angle meter, is determined in the preset rotational position. Different rotational positions can be characterized by angular values.
  • the distance from the X-ray exit port to the contour of the target portion may be represented by the distance value of the distance measuring sensor on the left and right sides reaching the contour surface of the target portion, using the distance from the X-ray light exit port to the contour of the target portion and the level measured at different rotational positions.
  • the angle value is used to draw the surface contour curve of the target part, and the origin of the coordinates of the curve is the reference selection center of the rotating arm.
  • S350 Determine a position adjustment strategy of the rotating arm according to a reference rotation center and a target rotation center selected by the user in the surface contour curve, and perform position adjustment on the rotating arm according to the position adjustment strategy to The center of rotation of the rotating arm is adjusted to the target center of rotation.
  • the surface contour curve of the target portion is drawn, thereby determining the reference alignment center of the rotating arm, and rotating according to the reference.
  • the positional relationship between the center and the target rotation center adjusts the rotation center of the rotating arm to the target rotation center to ensure that the obtained surface contour curve is relatively accurate, thereby achieving accurate position of the rotation center of the X-ray machine rotating arm in the contour of the target portion.
  • the ranging sensor is a laser ranging sensor
  • the ranging signal is a laser ranging signal
  • the laser ranging signal has no radiation to the human body, and the human eye can recognize it, which is convenient for the user to observe.
  • the contour determining component further includes: a distance measuring sensor disposed on upper and lower sides of the X-ray light exiting port of the X-ray generator on the rotating arm;
  • the method further includes:
  • the up-and-down left and right distance measuring sensors can be arranged equidistantly on the X-ray light exit of the X-ray generator, or can be arranged at different distances, preferably at equal distances, and placed close to the X-ray output port of the X-ray generator.
  • the up-and-down left and right ranging sensors transmit laser ranging signals to display four laser points on the object to be scanned, and the user can determine whether the target portion is within the area determined by the four laser points according to the positions of the four laser points, thereby realizing the target.
  • the portion is accurately adjusted to the field of view of the X-ray generator to simplify the scanning operation.
  • FIG. 4A is a flowchart of a method for adjusting a rotation center of an X-ray machine according to Embodiment 4.
  • the present embodiment is changed based on the above embodiment.
  • the method is drawn according to the rotation scan result.
  • S410 Control a rotating arm of the X-ray machine to drive the contour determining component to rotate around a target portion of the object to be scanned, where the contour determining component includes left and right sides of the X-ray light exiting port of the X-ray generator disposed on the rotating arm.
  • a distance measuring sensor, and a horizontal angle meter disposed on a side of the X-ray generator.
  • the ranging sensors that control the left and right sides transmit a ranging signal as the substitute X-ray signal to obtain the left and right sides at different rotational positions.
  • S450 Simulate a distance value Di of the X-ray light exit port of the X-ray generator reaching the contour surface of the target portion according to the Li, Ri, and trapezoidal geometric relationships.
  • a laser center point is provided at an intermediate position of the left and right laser ranging sensors, that is, an X-ray light exit of the X-ray generator.
  • a schematic diagram for calculating a distance value of the X-ray light exit port of the ray generator reaching the contour surface of the target portion comprising: a left laser ranging sensor 41, a right laser ranging sensor 42, and an X-ray light exit port 43 of the X-ray generator.
  • Di (Li+Ri)/2 according to the trapezoidal geometric relationship.
  • the radius of the rotating arm is denoted by r
  • the height of the X-ray generator on the radius of the rotating arm is denoted by hx
  • the horizontal direction is the X axis
  • the vertical direction is the Y axis
  • a standard coordinate system is established, and the surface contour curve of the target portion is drawn according to the position coordinates (ai, di), i ⁇ [1, N], and The origin of the standard coordinate system is determined as the reference center of rotation of the rotating arm.
  • FIG. 4d shows a schematic diagram of acquiring a surface contour curve.
  • the laser scanning center point is the reference rotation center of the rotating arm.
  • the laser ranging value of the horizontal angle meter and the left and right laser sensors are collected, and the laser center point ranging is calculated.
  • the value of the laser center point ranging value that is, the distance value Di of the X-ray emitting port of the X-ray generator reaching the contour surface of the target portion is calculated, and the Di is converted into the laser scanning center point to the contour distance, that is, the rotating arm reference rotation center arrives.
  • the distance value di of the contour surface of the target portion, and the contour curve is drawn according to the horizontal angle values ai and di.
  • Determining a position adjustment strategy of the rotating arm according to a reference rotation center and a target rotation center selected by the user in the surface contour curve, and performing position adjustment on the rotating arm according to the position adjustment strategy includes:
  • FIG. 4e shows a position adjustment strategy of an X-ray machine.
  • ⁇ x is a horizontal offset value from a reference rotation center to a target rotation center
  • ⁇ y is a reference rotation center to a target rotation center.
  • the vertical offset value, ( ⁇ x, ⁇ y) can be used as a position adjustment strategy, so that the rotation center of the rotating arm of the X-ray machine is adjusted from the reference rotation center to the target rotation center, thereby achieving accurate positioning of the target portion.
  • the surface contour curve of the target portion is drawn by the rotation angle and the distance value of the reference rotation center of the rotating arm to the contour surface of the target portion, and the origin of the standard coordinate system where the surface contour curve is located is determined as the reference rotation center of the rotating arm, and according to The target rotation center adjusts the rotation center of the rotating arm to the target rotation center, thereby ensuring a relatively accurate surface contour curve, thereby achieving accurate positioning of the rotation center of the X-ray machine rotating arm in the contour of the target portion.
  • the method further includes:
  • FIG. 4f shows a schematic diagram of an X-ray scanning three-dimensional imaging.
  • the rotating arm is rotated to the starting angle ⁇ 1 of the X-ray scanning, the X-ray generator is exposed, and the X-ray detector acquires a two-dimensional X-ray image.
  • the X-ray source is exposed once every other preset angle, and the X-ray detector acquires an X-ray two-dimensional image until the end angle ⁇ n of the X-ray scanning, as shown in Fig. 4g.
  • the computer will obtain a series of X-ray two-dimensional maps, and finally construct a three-dimensional map according to the three-dimensional reconstruction algorithm. In this way, an X-ray three-dimensional map centering on the target site, that is, the lesion position is obtained.
  • the preset angle may be a specific angle in a range of 0.1 to 5 degrees.
  • the X-ray machine rotation center adjustment method provided by any of the above embodiments is applicable not only to the three-dimensional imaging of the isocenter rotating arm, but also to the three-dimensional imaging of the variable isocenter rotating arm, and can obtain a partial contour of the object to be scanned, or Get the full outline of the object to be scanned.
  • FIG. 5 is a structural diagram of an X-ray machine rotation center adjusting device according to Embodiment 5.
  • the X-ray machine rotation center adjusting device provided in this embodiment can be applied to the X-ray machine described in the embodiment of the present disclosure.
  • the apparatus includes a rotation control module 510, a rotation scan result acquisition module 520, a reference rotation center determination module 530, and a rotation center adjustment module 540.
  • the rotation control module 510 is configured to control the rotating arm of the X-ray machine to drive the contour determining component to rotate around the target portion of the object to be scanned;
  • the rotation scan result obtaining module 520 is configured to control the contour determining component to send a substitute X-ray signal to perform a rotation scan on the target portion during the rotation of the rotating arm, and obtain a rotation scan result;
  • a reference rotation center determining module 530 configured to draw a surface contour curve of the target portion according to the rotation scan result, and determine a reference rotation center of the rotating arm in the surface contour curve;
  • a rotation center adjustment module 540 configured to determine a position adjustment strategy of the rotation arm according to a reference rotation center and a target rotation center selected by the user in the surface contour curve, and perform the rotation arm according to the position adjustment strategy Position adjustment to adjust the center of rotation of the rotating arm to the target center of rotation.
  • the X-ray machine rotation center adjusting device controls the rotating arm of the X-ray machine and the contour determining component to scan around the target part by the processor in the X-ray machine, thereby obtaining a surface contour curve of the target part and determining the rotating arm.
  • the reference rotation center determines the position adjustment strategy according to the reference rotation center and the target rotation center, adjusts the rotation center of the rotating arm to the target rotation center, optimizes the X-ray machine in the related art, and realizes the rotation center of the X-ray machine rotating arm
  • the precise positioning of the position in the contour of the target part requires only one X-ray scan to accurately obtain the X-ray image generated by the rotation of the position of interest in the target area, avoiding multiple X-ray scans, reducing the radiation dose, and simplifying the operation. .
  • the contour determining component may include a distance measuring sensor disposed on the left and right sides of the X-ray light exiting port of the X-ray generator on the rotating arm, and a X-ray generator disposed on the X-ray generator Horizontal angle meter on the side;
  • the rotation scan result acquisition module is set to:
  • the ranging sensors that control the left and right sides transmit a ranging signal as the substitute X-ray signal to obtain the measured positions on the left and right sides at different rotational positions. a distance value from the sensor reaching the contour surface of the target portion;
  • the ranging sensor is a laser ranging sensor
  • the ranging signal is a laser ranging signal
  • the contour determining component further includes: a distance measuring sensor disposed on upper and lower sides of the X-ray light exiting port of the X-ray generator on the rotating arm;
  • the X-ray machine rotation center adjusting device may further include: a target portion adjusting module configured to control the up, down, left, and right measurements before the rotating arm of the X-ray machine drives the contour determining member to rotate around the target portion of the object to be scanned.
  • the laser distance measuring signal is sent from the sensor to enable the user to adjust the target portion to the field of view of the X-ray generator according to the four laser points displayed on the object to be scanned.
  • the reference rotation center determining module is set to:
  • a standard coordinate system is established, and the surface contour curve of the target portion is drawn according to the position coordinates (ai, di), i ⁇ [1, N], and the The origin of the standard coordinate system is determined as the reference rotation center of the rotating arm.
  • the rotation center adjustment module is configured to:
  • the X-ray machine rotation center adjusting device provided in this embodiment can be used to execute the X-ray machine rotation center adjusting method provided by any embodiment, and has corresponding functional modules to achieve the same beneficial effects.
  • the embodiment further provides a non-transitory computer readable storage medium storing computer executable instructions for performing the above-described X-ray machine rotation center adjustment method.
  • the X-ray machine and the X-ray machine rotation center adjusting method and device provided by the embodiment control the X-ray machine's rotating arm and the contour determining component to scan around the target part by the processor in the X-ray machine to obtain the surface contour of the target part.
  • the curve determines the reference rotation center of the rotating arm, determines the position adjustment strategy according to the reference rotation center and the target rotation center, adjusts the rotation center of the rotating arm to the target rotation center, optimizes the X-ray machine in the related art, and realizes the X-ray
  • the precise positioning of the center of rotation of the rotating arm of the machine in the contour of the target part requires only one X-ray scan to accurately obtain the X-ray image generated by the rotation of the position of interest in the target area, avoiding multiple X-ray scans. Reduce radiation dose and simplify operation.

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  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

L'invention concerne une machine à rayons X. La machine à rayons X comprend : un bras rotatif (11), un générateur de rayons X (12) disposé sur le bras rotatif (11), un composant de détermination de contour (13), un processeur (14), un appareil d'affichage (15) et un composant de décalage de position (16). La machine à rayons X effectue, au moyen du composant de détermination de contour (13) émettant un signal de substitution de rayons X autour d'une partie cible, un balayage afin d'obtenir une courbe de contour de surface de la partie cible et de déterminer un centre de rotation de référence du bras rotatif (11). Une politique de réglage de position est déterminée en fonction du centre de rotation de référence et d'un centre de rotation cible, et un centre de rotation du bras rotatif (11) est réglé pour se situer au niveau du centre de rotation cible. De cette manière, un diagramme de rayons X d'une zone d'intérêt de la partie cible peut être obtenu au moyen d'un seul passage de balayage de rayons X, empêchant ainsi de multiples opérations de balayage de rayons X, réduisant le dosage de rayonnement et simplifiant le fonctionnement. L'invention concerne également un procédé et un dispositif de réglage d'un centre de rotation d'une machine à rayons X.
PCT/CN2017/071528 2017-01-18 2017-01-18 Machine à rayons x, procédé et dispositif de réglage du centre de rotation d'une machine à rayons x WO2018132969A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388143A (en) * 1993-11-26 1995-02-07 Arch Development Corporation Alignment method for radiography and radiography apparatus incorporating same
US6154522A (en) * 1999-02-11 2000-11-28 Mcdonnell Douglas Corporation Method, system and apparatus for aiming a device emitting a radiant beam
CN102525524A (zh) * 2010-12-20 2012-07-04 上海西门子医疗器械有限公司 用于定位像扫描的定位装置和方法
CN202776338U (zh) * 2012-09-20 2013-03-13 北京朗视仪器有限公司 辐射成像设备
CN103415252A (zh) * 2011-03-08 2013-11-27 卡尔斯特里姆保健公司 用于x射线成像系统的对准装置
CN104146723A (zh) * 2014-08-08 2014-11-19 中国科学院深圳先进技术研究院 一种光学辅助标定的x光成像系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388143A (en) * 1993-11-26 1995-02-07 Arch Development Corporation Alignment method for radiography and radiography apparatus incorporating same
US6154522A (en) * 1999-02-11 2000-11-28 Mcdonnell Douglas Corporation Method, system and apparatus for aiming a device emitting a radiant beam
CN102525524A (zh) * 2010-12-20 2012-07-04 上海西门子医疗器械有限公司 用于定位像扫描的定位装置和方法
CN103415252A (zh) * 2011-03-08 2013-11-27 卡尔斯特里姆保健公司 用于x射线成像系统的对准装置
CN202776338U (zh) * 2012-09-20 2013-03-13 北京朗视仪器有限公司 辐射成像设备
CN104146723A (zh) * 2014-08-08 2014-11-19 中国科学院深圳先进技术研究院 一种光学辅助标定的x光成像系统

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