WO2019119845A1 - X射线成像设备及使用x射线成像设备进行成像的方法 - Google Patents
X射线成像设备及使用x射线成像设备进行成像的方法 Download PDFInfo
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- 238000003384 imaging method Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 238000001514 detection method Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract 5
- 230000003287 optical effect Effects 0.000 description 10
- 238000002591 computed tomography Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007408 cone-beam computed tomography Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 1
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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
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
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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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4007—Arrangements for generating radiation specially adapted for radiation diagnosis characterised by using a plurality of source units
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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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4064—Arrangements for generating radiation specially adapted for radiation diagnosis specially adapted for producing a particular type of beam
- A61B6/4078—Fan-beams
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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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4064—Arrangements for generating radiation specially adapted for radiation diagnosis specially adapted for producing a particular type of beam
- A61B6/4085—Cone-beams
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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
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
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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
- A61B6/44—Constructional features of apparatus for radiation diagnosis
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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
- A61B6/48—Diagnostic techniques
- A61B6/482—Diagnostic techniques involving multiple energy imaging
Definitions
- the present application relates to the field of X-ray imaging, and more particularly to an X-ray imaging apparatus capable of enlarging a scanning range of a source to an object and a method of imaging using the X-ray imaging apparatus.
- CT devices Compputed Tomography devices
- X-ray imaging devices such as chest DR
- CT devices CT devices
- X-ray imaging devices such as chest DR
- CT devices CT devices
- X-ray imaging devices such as chest DR
- CT devices CT devices
- two sets of scanning imaging systems are provided, that is, Two sources and two detectors.
- CBCT cone beam computed tomography
- the adjustable distance between the source, the projecting body, and the detector is limited, so the scanning range of the light emitted by the source is also limited.
- a CT device with two sets of scanning imaging systems, two sets of X-ray generating devices and two sets of detector systems are mounted at the same plane at a certain angle for synchronous scanning. Although energy spectrum imaging or time resolution can be achieved, the vertical scan range is still limited. In addition, when two sets of scanning imaging systems are used to expand the longitudinal scanning range, on the one hand, the scattering between the light generated by the two sources will reduce the imaging resolution, and on the other hand, the use of two detectors will increase the cost.
- the present application provides an X-ray imaging apparatus including two sources and one detector.
- an X-ray imaging apparatus including: a rotation mechanism provided with a source including a first source and a second source, a first source and a second The source respectively emits first light and second light, the first light and the second light are alternately irradiated to the projecting body, the rotating mechanism surrounds or partially surrounds the projecting body, and is configured to rotate around the projecting body; and the detector The detector detects the first light and the second light passing through the object.
- the detector can be disposed on the rotating mechanism.
- the detector can be located on both sides of the projectile with the source.
- the first source and the second source may be pulsed sources.
- the X-ray imaging apparatus may further include a light switching mechanism including a baffle that alternately blocks the first light and the second light.
- the X-ray imaging apparatus may further include a light switching mechanism including a first shutter and a second shutter, the first shutter and the second shutter alternately blocking the first light and the second Light.
- a light switching mechanism including a first shutter and a second shutter, the first shutter and the second shutter alternately blocking the first light and the second Light.
- the first light and the second light may be cone beam X-rays or fan-shaped X-rays.
- the rotating mechanism surrounds or partially surrounds the projection body and is configured to rotate about the projection body.
- the first source and the second source may be spaced apart from one another in the direction of the axis of rotation of the rotating mechanism or in a direction perpendicular to the axis of rotation.
- the first source and the second source are arranged such that the first light and the second light scan the same portion of the projecting body in one scan, the first source and the second source are loaded differently Tube voltage.
- the waveforms of the first light and the second light are square waves, and the periods of the first light and the second light are the same, and the period is an even multiple of the detection period of the detector.
- the rotating mechanism can also be configured to move in the direction of the axis of rotation of the rotating mechanism while rotating.
- a method of imaging by an X-ray imaging apparatus as described above includes: alternately irradiating the first light and the second light to the projecting body; and detecting, by the detector, the first light and the second light passing through the projecting body.
- the X-ray imaging apparatus by using two sources, it is possible to eliminate or partially eliminate generation by two sources while alternately illuminating the first light and the second light while increasing the scanning range.
- the scattering of light causes a reduction in resolution, and on the other hand reduces costs by using only one detector.
- the X-ray imaging apparatus according to the present application can also achieve energy spectrum imaging by loading the first source and the second source with different tube voltages.
- FIG. 1 is a schematic diagram of an X-ray imaging apparatus according to an exemplary embodiment of the present application
- FIG. 2 is a schematic diagram of a source and detector arrangement and an optical path between a source and a detector in an X-ray imaging apparatus, in accordance with an exemplary embodiment of the present application;
- FIG. 3 is a schematic diagram of an arrangement of a source and a detector and an optical path between a source and a detector in an X-ray imaging apparatus according to another exemplary embodiment of the present application;
- FIGS. 4 to 6 are schematic views showing an embodiment in which the first source 110 and the second source 120 are pulsed sources;
- Figure 7 is a schematic plan view showing the optical path between the first source, the second source, the detector and the projecting body when the rotating mechanism is rotated;
- Figure 8 is a schematic plan view independently showing an optical path between a first source, a second source, a detector, and a projecting body;
- FIG. 9 is a schematic view showing an arrangement of a source and a detector and an optical path between a source and a detector in an X-ray imaging apparatus according to still another embodiment of the present application.
- first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or portions, but these elements, components, regions, layers And/or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, Thus, a first element, component, region, layer or section discussed below may be referred to as a second element, component, region, layer or section.
- spatially relative terms such as “below” or “on” and “above” may be used to describe the relationship of one element to another as shown in the drawings. . It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is turned over, the elements described as “below” the other elements will then be “above” the other elements. The exemplary term “below” or “below” may thus encompass both orientations above and below.
- FIG. 1 is a schematic diagram of an X-ray imaging apparatus 10 according to an exemplary embodiment of the present application.
- 2 is a schematic diagram of a source and detector arrangement and an optical path between a source and a detector in an X-ray imaging apparatus 10, in accordance with an exemplary embodiment of the present application.
- 3 is a schematic diagram of an arrangement of a source and a detector and an optical path between a source and a detector in an X-ray imaging apparatus 10, according to another exemplary embodiment of the present application.
- an X-ray imaging apparatus 10 includes a rotating mechanism 300 and a detector 200 provided with a source 100.
- the detector 200 can be a two-dimensional planar detector.
- the detector 200 may be a flat panel detector having a coverage width in the Z-axis direction of, for example, about 300 mm or more.
- the detector 200 can be disposed on the rotating mechanism 300, but this is merely exemplary and the application is not limited thereto.
- the probe 200 may also be disposed on a mechanism other than the rotating mechanism 300, and may be configured to be capable of receiving the first light S1 and the second light S2 passing through the projecting body A.
- the source 100 and the detector 200 can be located on either side of the projecting body A.
- the rotating mechanism 300 can be coupled, for example, to the frame 400, and the frame 400 can be fixedly mounted or placed on the ground.
- a drive device eg, a motor
- the rotating mechanism 300 may be driven by the drive device for rotation or other movement, but this is merely exemplary.
- the drive means can be disposed in the rotating mechanism 300 or other suitable location.
- the source 100 includes a first source 110 and a second source 120.
- the first source 110 and the second source 120 emit the first light S1 and the second light S2, respectively.
- the first source 110 and the second source 120 may be X-ray generators, and the first light S1 and the second light S2 are X-rays.
- the first light S1 and the second light S2 may be a cone beam X-ray, a fan beam X-ray, or the like, but the present application is not limited thereto.
- the scanning range of the X-ray imaging apparatus 10 can be expanded.
- first source 110 and the second source 120 when the first source 110 and the second source 120 are spaced apart from each other in the Z-axis direction, they may be perpendicular to the plane B defined by the X-axis and the Y-axis.
- the scanning direction of the first light S1 and the second light S2 on the projecting body A is enlarged in the direction, that is, the Z-axis direction.
- the first source 110 and the second source 120 when the first source 110 and the second source 120 are arranged side by side on a plane B formed, for example, by the X-axis and the Y-axis, that is, on a plane B perpendicular to the Z-axis,
- the scanning range in the direction parallel to the plane B can be increased.
- the arrangement of the source 100 shown in Figures 2 and 3 is merely exemplary and the application is not limited thereto.
- Scanning range can be achieved by different arrangements of the first source 110 and the second source 120 in the source 100 (ie, by different positional relationships of the first source 110 and the second source 120 with respect to the projecting body A)
- the expansion in different directions, that is, the expansion of the scanning range is not limited to the expansion in the horizontal direction and the vertical direction.
- the X-ray imaging apparatus 10 may further include a controller (not shown).
- the controller can control the switches of the source 100, for example, the controller can independently control the switches of the first source 110 and the second source 120.
- the controller can also be coupled to the drive to control the rotational speed and direction of rotation of the drive.
- the first light S1 and the second light S2 are alternately irradiated to the projecting body A.
- the detector 200 detects the first light S1 and the second light S2 passing through the projecting body A.
- the interference caused by the scattering between the first light S1 and the second light S2 may cause the imaging accuracy to be lowered.
- the first light S1 and the second light S2 are alternately irradiated to the projecting body A. This can reduce the interference and/or scattering of the first light S1 and the second light S2 before or after the irradiation to the projecting body A.
- the first light S1 and the second light S2 may be continuously and alternately irradiated to the projecting body. According to another embodiment of the present application, the first light S1 and the second light S2 may be alternately irradiated to the projecting body A at predetermined intervals. In addition, the time during which the first light S1 and the second light S2 illuminate the projectile A can be set as needed.
- FIGS. 4 to 6 are exemplary waveform diagrams of the first light S1 and the second light S2 in the case where the first source 110 and the second source 120 are pulsed sources.
- the first source 110 and the second source 120 may be pulsed sources, ie, the first source 110 and the second source 120 may emit X-ray pulses.
- the first source 110 and the second source 120 may be pulsed lasers, and the waveforms of the first light S1 and the second light S2 may be rectangular waves.
- the first source 110 and the second source 120 may be disposed such that the first light S1 and the second light S2 are alternately irradiated to the projecting body A.
- the intensities of the first light S1 and the second light S2 may be the same or different.
- the first light S1 and the second light S2 respectively emitted by the first source 110 and the second source 120 may have the same period T1, and the first light
- the duty ratios of S1 and second light S2 may both be 50%, that is, the first light S1 and the second light S2 may be square waves.
- the first source 110 and the second source 120 may be disposed such that the second light S is at a falling edge when the first light S1 is at a rising edge and the first light S1 is at a falling edge when the second light S2 is at a rising edge, ie
- the first light S1 and the second light S2 are not irradiated to the projecting body A at the same time.
- the period T1 of the first light S1 or the second light S2 may be an even multiple of the detection period of the detector 200.
- the detection period of the detector 200 refers to the time required for the detector 200 to complete a probe. In this way, it is convenient to distinguish the data collected by the detector 200, for example, to distinguish between the data generated by the detector 200 collecting the first light S1 after the illumination of the object A and the collection of the illumination object A by the detector 200.
- the embodiment of Fig. 5 is substantially the same as the embodiment of Fig. 4 except for the duty ratios of the first light S1 and the second light S2.
- the first light S1 and the second light S2 may have the same period T2, the first light S1 and the second light S2 may have different duty ratios and the sum of the duty ratios of the first light S1 and the second light S2 is 1 .
- the duty ratio of the first light S1 may be 70%
- the duty ratio of the second light may be 30%, but the present application is not limited thereto.
- the duty ratios of the first light S1 and the second light S2 may be greater than 0 and less than 100% but not equal to 50%.
- the second light S2 is at a falling edge when the first light S1 is at a rising edge, and the second light S2 is at a rising edge when the first light S1 is at a falling edge. That is, the first light S1 and the second light S2 are not irradiated to the projecting body A at the same time.
- the light detected by the detector 200 for the first predetermined time may be the first light S1 passing through the projecting body A and at the second predetermined according to the duty ratios of the first light S1 and the second light S2.
- the light detected during the time is the second light S2 passing through the object A.
- the first predetermined time and the second predetermined time may be determined according to the duty ratios of the first light S1 and the second light S2, that is, irradiated on the projecting body A in one period T2 according to the first light S1 and the second light S2
- the time to determine For example, the duty ratio of the first light S1 may be 70%, and the duty ratio of the second light may be 30%, then it may be determined that the light detected by the detector 200 within 0.7 ⁇ T2 after the start of detection is passed.
- the first light S1 of the object A is projected, and it can be determined that the light detected in the next 0.3 ⁇ T2 time is the second light S2 passing through the object A.
- the above embodiments facilitate the differentiation of the data collected by the detector 200 and are merely examples, and the application is not limited thereto.
- the first light S1 and the second light S2 may have the same period T3 and the sum of the duty ratios of the first light S1 and the second light S2 is less than one.
- the duty ratio of the first light S1 is 70%
- the duty ratio of the second light S2 is 20%.
- the first light S1 is first at the rising edge, that is, the first light S1 is first irradiated, and when the first light S1 is at the falling edge, the second light S2 is also at the falling edge, then the first light is at this time.
- N1 and second light S2 are not irradiated to the projecting body A.
- the time during which the two lights S2 are not irradiated to the projecting body A in one cycle T3 may last for 0.1 ⁇ T3.
- the second light S2 can illuminate a time of 0.2 ⁇ T3.
- the above process can be cycled according to the needs of the scan.
- the above embodiments facilitate the differentiation of the data collected by the detector 200 and are merely examples, and the application is not limited thereto.
- the above embodiments are merely exemplary.
- the first light S1 and the second light S2 may be non-periodic pulses.
- the first source 110 and the second source 120 may be disposed such that the first light S1 and the second light S2 are alternately irradiated to the projecting body A, that is, the first light S1 and the second light S2 are not At the same time, it is irradiated to the subject A.
- the X-ray imaging apparatus 10 may include a light switching mechanism, and the light switching mechanism may include a shutter that alternately blocks the first light S1 and the second light S2. This allows the first light S1 and the second light S2 to be alternately irradiated to the projecting body A.
- the light switching mechanism may be controlled, for example, by a controller included in the X-ray imaging apparatus 10, for example, when the X-ray imaging apparatus 10 includes a computer system, the light switching structure may be controlled by a controller included in the computer system, but the present application is not limited thereto. .
- the X-ray imaging apparatus 10 may include a light switching mechanism including a first shutter and a second shutter, the first shutter and the second shutter alternately blocking the first light S1, respectively And the second light S2. This allows the first light S1 and the second light S2 to be alternately irradiated to the projecting body A.
- the light switching mechanism may be controlled, for example, by a controller included in the X-ray imaging apparatus 10, for example, when the X-ray imaging apparatus 10 includes a computer system, the light switching structure may be controlled by a controller included in the computer system, but the present application is not limited thereto. .
- the above embodiment is merely exemplary, and alternate illumination of the projecting body A by the first light S1 and the second light S2 can be achieved by means other than the embodiment as described above.
- Fig. 7 is a schematic plan view generally showing an optical path between the first source, the second source, the detector, and the projecting body when the rotating mechanism 300 is rotated.
- Fig. 8 is a schematic plan view independently showing an optical path between a first source, a second source, a detector, and a projecting body.
- the rotating mechanism 300 may surround or partially surround the projecting body A and may be configured to rotate about the projecting body A.
- the rotating mechanism 300 may be a closed ring shape, but the shape of the rotating mechanism 300 is not limited thereto.
- the rotating mechanism 300 partially surrounds the projecting body A the rotating mechanism 300 may be an annular shape, a semicircular shape, a C shape, or the like having an opening, but the shape of the rotating mechanism 300 is not limited thereto.
- the rotation axis C of the rotation mechanism 300 may overlap with the projection body A, but the present application is not limited thereto, and the rotation axis C may be at other positions.
- the rotational direction R of the rotational mechanism 300 is not limited to the directions shown in FIGS. 7 and 8, and may be opposite to the directions shown in FIGS. 7 and 8 or may be obliquely rotated with respect to the projecting body A.
- the speed of the rotating mechanism 300 around the projection body A can be set according to the imaging needs.
- the first light S1 may be irradiated to a portion of the projectile A (for example, a projection body).
- the second light S2 may be irradiated to a portion of the projecting body A (for example, about the lower 3/4 portion of the projecting body), such that the first light S1 and the second light S2 may be once
- the entire projecting body is scanned in the scanning, so that the X-ray imaging apparatus 10 can expand the scanning range in the longitudinal direction (i.e., the direction of the rotational axis C).
- One scan may refer to an action of scanning an area on the subject A to be imaged according to the X-ray scanning apparatus of the present application.
- the action may be set as needed, for example, the scan time and the number of scans of the first light S1 and the second light S2, the time interval of scanning using the first light S1 and the second light S2, and the first light may be set as needed.
- the scanning direction and the scanning speed when S1 and the second light S2 are scanned (for example, by setting the rotation direction and the rotation speed of the rotation mechanism 300) and the like.
- the action may be, for example, scanning the area to be imaged twice using the first light S1 for 45 seconds, and using the second light S2 for the area to be imaged before scanning the second time using the first light S1.
- the scanning is performed for 60 seconds, and the interval at which the first light S1 and the second light S2 are scanned may be 5 seconds, but this is merely an example, and the present application is not limited thereto.
- the first source 110 and the second source 120 may also be spaced apart from each other in a direction perpendicular to the rotation axis C, but the present application is not limited thereto.
- the rotation mechanism 300 provided with the first source 110 and the second source 120 spaced apart in the direction of the rotation axis C is rotated around the projection body A, for example, the volume of the X-ray imaging apparatus 10 can be increased while volume scanning is realized.
- the scanning range of the longitudinal direction (the direction of the rotation axis C).
- the first light S1 and the second light S2 are alternately irradiated to the projecting body A, scattering or interference generated when the first light S1 and the second light S2 are simultaneously irradiated can also be avoided.
- the detector 200 may be disposed on the rotating mechanism 300 together with the source 100, and the detector 200 and the source 100 are respectively disposed on both sides of the projecting body A. Thus, the detector 200 can rotate with the source 100 along the rotating mechanism 300 around the projecting body A.
- the rotating mechanism 300 may surround or partially surround the projecting body A, and may be configured to rotate around the projecting body A.
- the rotation mechanism 300 can be driven by a driving device provided in the X-ray imaging apparatus 10. How the drive unit drives the rotating mechanism 300 for rotation or other movements is prior art and therefore will not be described again.
- the first source 110 and the second source 120 may be disposed on a rotating mechanism.
- the first source 110 and the second source 120 may be arranged such that the first light S1 and the second light S2 scan the same portion on the projectile A in one scan, wherein one scan may refer to the X-ray according to the present application.
- the scanning device completes the action of scanning the area on the subject A to be imaged, as described above with reference to FIGS.
- the same portion may be an image acquisition area of the X-ray imaging apparatus 10 for the subject A.
- the first source 110 and the second source 120 may, for example, be arranged to be spaced apart from each other in a direction parallel to the plane B.
- the first light S1 and the second light S2 may be irradiated on the same height of the projecting body A with respect to the plane B.
- the first light S1 and the second light S2 are scanned to the same portion on the projecting body A.
- the same portion of the first light S1 and the second light S2 scanned onto the projecting body A may represent the portion of the first light S1 and the second light S2 scanned relative to the projectile A in one scan (ie, volumetric scanning is achieved). Partially) completely coincident or partially coincident.
- the rotating mechanism 300 may be a closed ring shape, but the shape of the rotating mechanism 300 is not limited thereto.
- the rotating mechanism 300 may be an annular shape, a semicircular shape, a C shape, or the like having an opening, but the shape of the rotating mechanism 300 is not limited thereto.
- the first source 110 and the second source 120 can be loaded with different tube voltages.
- the first source 110 can be loaded with a high tube voltage
- the second source 120 can be loaded with a low tube voltage
- the data corresponding to the first source 110 detected by the detector 200 can be a high energy signal
- the data corresponding to the second source 120 detected by the detector 200 may be a low energy signal
- the energy spectrum CT image of the irradiated portion of the object A can be obtained by an image reconstruction algorithm. Therefore, energy spectrum X-ray imaging can be realized by the X-ray imaging apparatus 10 according to the present embodiment.
- the X-ray imaging apparatus 10 uses two sources, so that scanning of the same portion (image acquisition area) on the subject A can be realized by a single scan, thereby realizing image acquisition in a shorter time.
- the rotating mechanism 300 may be further configured to move in the direction of the rotational axis of the rotating mechanism 300 while rotating about the rotational axis C.
- the scanning range of the X-ray imaging mechanism can be further increased by the movement of the rotation mechanism 300 in the direction of the rotation axis C, for example, moving in the upward (Z-axis direction) or downward (in the reverse direction of the Z-axis).
- the positional relationship between the first source 110 and the second source 120 is not limited to the above embodiment.
- the first source 110 and the second source 120 may be integrally formed, detachably connected, or independently formed, but the present application is not limited thereto.
- first light S1 and the second light S2 are schematically illustrated by two lines, respectively, but the first light S1 and the second light S2 are not limited.
- the present application also discloses a method of imaging by the X-ray imaging apparatus 10 as described above.
- the method includes: alternately irradiating the first light and the second light to the projecting body; and detecting, by the detector, the first light and the second light passing through the projecting body.
- the scanning range of the X-rays can be expanded, for example, the lateral (e.g., the direction parallel to the plane B) scanning range and the longitudinal (Z-axis direction) scanning range.
- the rotating mechanism 300 can be rotated when the X-ray imaging apparatus 10 is used.
- the body A is rotated, so that the volume scanning of the projecting body A can be realized while increasing the scanning range.
- the rotating mechanism 300 is rotatable about the projection body A, the X-ray imaging apparatus can realize X-ray imaging by loading the first source 110 and the second source 120 with different tube voltages.
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Abstract
Description
Claims (13)
- 一种X射线成像设备,包括:转动机构,所述转动机构设置有包括第一射源和第二射源的射源,所述第一射源和所述第二射源分别发射第一光和第二光,所述第一光和所述第二光交交替地照射至投照体;以及探测器,所述探测器检测经过所述投照体的第一光和第二光。
- 如权利要求1所述的X射线成像设备,其中,所述探测器设置在所述转动机构上。
- 如权利要求2所述的X射线成像设备,其中,所述探测器与所述射源位于所述投照体的两侧。
- 如权利要求1所述的X射线成像设备,其中,所述第一射源和所述第二射源是脉冲射源。
- 如权利要求1所述的X射线成像设备,还包括:光切换机构,所述光切换机构包括交替地阻挡所述第一光和所述第二光的挡板。
- 如权利要求1所述的X射线成像设备,还包括:光切换机构,所述光切换机构包括第一挡板和第二挡板,所述第一挡板和所述第二挡板分别交替地阻挡所述第一光和所述第二光。
- 如权利要求1所述的X射线成像设备,其中,所述第一光和所述第二光为锥形束X射线或扇形X射线。
- 如权利要求1所述的X射线成像设备,其中,所述转动机构环绕或部分地环绕所述投照体,并且配置为绕所述投照体转动。
- 如权利要求8所述的X射线成像设备,其中,所述第一射源和所述第二射源在所述转动机构的转动轴的方向或垂直于所述转动轴的方向上互相间隔开。
- 如权利要求8所述的X射线成像设备,其中,所述第一射源和所述第二射源布置成使得所述第一光和所述第二光在一次扫描中扫描所述投照体上的相同部分,所述第一射源和所述第二射源加载有不同的管电压。
- 如权利要求4所述的X射线成像设备,其中,所述第一光和所述第二光的波形为方波,所述第一光和所述第二光的周期相同,所述周期为所述探测器的探测周期的偶数倍。
- 如权利要求1-11中任一项所述的X射线成像设备,所述转动机构还配置为在转动的同时在所述转动机构的转动轴的方向上移动。
- 一种通过如权利要求1-12中任一项所述的X射线成像设备进行成像的方法:将所述第一光和所述第二光交替地照射至投照体;以及通过所述探测器检测经过所述投照体的第一光和第二光。
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CN1779444A (zh) * | 2004-11-26 | 2006-05-31 | 清华大学 | 一种用射线源对液体进行ct安全检测的方法及其装置 |
CN1820705A (zh) * | 2005-02-18 | 2006-08-23 | 傅耀宗 | X射线检测装置和图像获取及处理方法 |
CN201814585U (zh) * | 2010-09-03 | 2011-05-04 | 北京睿思厚德辐射信息科技有限公司 | 医用和工业用x射线实时立体成像装置 |
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US9782136B2 (en) * | 2014-06-17 | 2017-10-10 | The University Of North Carolina At Chapel Hill | Intraoral tomosynthesis systems, methods, and computer readable media for dental imaging |
CN107072022B (zh) * | 2016-12-16 | 2019-07-02 | 中国科学院深圳先进技术研究院 | X射线断层扫描方法及系统 |
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US20050194540A1 (en) * | 2004-03-08 | 2005-09-08 | Paul Fenster | Methods and apparatus for small footprint imaging system |
CN1779444A (zh) * | 2004-11-26 | 2006-05-31 | 清华大学 | 一种用射线源对液体进行ct安全检测的方法及其装置 |
CN1820705A (zh) * | 2005-02-18 | 2006-08-23 | 傅耀宗 | X射线检测装置和图像获取及处理方法 |
CN201814585U (zh) * | 2010-09-03 | 2011-05-04 | 北京睿思厚德辐射信息科技有限公司 | 医用和工业用x射线实时立体成像装置 |
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