WO2019214724A1 - 组合扫描x射线发生器、复合检查设备以及检查方法 - Google Patents
组合扫描x射线发生器、复合检查设备以及检查方法 Download PDFInfo
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Abstract
Description
Claims (34)
- 一种组合扫描X射线发生器,包括:外壳;阳极,设置在所述外壳内,阳极包括相对的阳极第一端和阳极第二端,其中第一端和第二端是所述阳极的相对的两端;笔形束辐射源,设置在所述阳极第一端,配置用以发射笔形X射线束,其中,笔形束辐射源包括第一阴极,所述第一阴极配置成在笔形束辐射源内朝向阳极第一端发射电子;扇形束辐射源,设置在所述阳极第二端,配置用以发射扇形X射线束,其中,扇形束辐射源包括第二阴极,所述第二阴极配置成在扇形束辐射源内朝向阳极第二端发射电子;其中,笔形束辐射源和扇形束辐射源能够独立操作。
- 如权利要求1所述的组合扫描X射线发生器,其中阳极设置成阳极第一端和阳极第二端可以相对彼此转动。
- 如权利要求1或2所述的组合扫描X射线发生器,其中,笔形束辐射源包括第一靶,设置在阳极第一端端面,第一靶受到电子轰击后发射X射线;扇形束辐射源包括第二靶,设置在阳极第二端端面,第二靶受到电子轰击后发射X射线;其中,第一端端面与阳极的长度延伸方向不垂直,第二端端面与阳极的长度延伸方向不垂直。
- 如权利要求3所述的组合扫描X射线发生器,配置成使得笔形束辐射源的第一靶和扇形束辐射源的第二靶能够同步地或不同步地发射X射线。
- 如权利要求3所述的组合扫描X射线发生器,其中,组合扫描X射线发生器配置成使得施加在第一阴极和阳极第一端之间的电压等于施加在第二阴极和阳极第二端之间的电压,从而产生的X射线能量相同。
- 如权利要求3所述的组合扫描X射线发生器,其中,组合扫描X射线发生器配置成使得施加在第一阴极和阳极第一端之间的电压不等于施加在第二阴极和阳极第二端之间的电压,从而产生的X射线能量不相 同。
- 如权利要求1或2所述的组合扫描X射线发生器,其中,笔形束辐射源包括防护转筒,配置成将第一靶发射的X射线调制成笔形X射线束;和其中,扇形束辐射源包括准直器,配置成将第二靶发射的X射线调制成扇形X射线束。
- 如权利要求7所述的组合扫描X射线发生器,其中,防护转筒包围阳极第一端,允许电子穿过防护转筒轰击第一靶,并限制第一靶发射的X射线,使得第一靶发射的X射线仅能够从防护转筒出射孔射出,形成笔形X射线束。
- 如权利要求7所述的组合扫描X射线发生器,其中,笔形束辐射源还包括设置在所述阳极上靠近阳极第一端的电枢铁芯和围绕在电枢铁芯上的电枢绕组,以及对应电枢铁芯设置在防护转筒内壁上的多个永磁体,以便在电枢绕组形成变化的磁场时电枢绕组与多个永磁体相互作用而驱动防护转筒围绕所述阳极第一端转动。
- 如权利要求7所述的组合扫描X射线发生器,其中,准直器包围阳极第二端,允许电子穿过准直器轰击第二靶,并限制第二靶发射的X射线,使得第二靶发射的X射线仅能够从准直器出口射出,形成扇形X射线束。
- 如权利要求7所述的组合扫描X射线发生器,其中,防护转筒出射孔射出的笔形X射线束和准直器出口射出的扇形X射线束分别位于两个平行的平面内。
- 如权利要求7所述的组合扫描X射线发生器,其中,在沿阳极长度方向上看,防护转筒出射孔射出的笔形X射线束的扫描覆盖范围和准直器出口射出的扇形X射线束的覆盖范围不重叠、部分重叠或完全重合。
- 如权利要求7所述的组合扫描X射线发生器,其中,防护转筒出射孔射出的笔形X射线束的扫描范围的张角与准直器出口射出的扇形X射线束的张角相同或不相同。
- 如权利要求1或2所述的组合扫描X射线发生器,其中,所述阳 极包括阳极柄,所述阳极柄与所述外壳连接用于将所述阳极固定在所述外壳内部。
- 如权利要求14所述的组合扫描X射线发生器,其中,所述阳极柄包括冷却通道,配置成用以流过冷却介质。
- 一种复合检查设备,包括多个检查通道和至少一台如权利要求1~15中任一项所述的组合扫描X射线发生器,其中,每一台组合扫描X射线发生器被构造成发出一个笔形X射线束和一个扇形X射线束,所述笔形X射线束适用于对一个检查通道内的待检目标进行背散射扫描,所述扇形X射线束适用于对另一个检查通道内的待检目标进行透射扫描。
- 根据权利要求16所述的复合检查设备,其中,所述复合检查设备包括两个检查通道和一台组如权利要求1~15中任一项所述的合扫描X射线发生器,并且所述组合扫描X射线发生器设置在所述两个检查通道之间,向一个检查通道内的待检目标发射所述笔形X射线束,并向另一个检查通道内的待检目标发射所述扇形X射线束。
- 根据权利要求16所述的复合检查设备,其中,每一台组合扫描X射线发生器被构造成发出一个笔形X射线束和一个扇形X射线束,使得所述背散射扫描和所述透射扫描相互独立地进行并且互无串扰;其中,所述背散射扫描和所述透射扫描同时进行或者不同时进行。
- 根据权利要求16所述的复合检查设备,其中,所述多个检查通道位于同一个水平面上。
- 根据权利要求16所述的复合检查设备,其中,所述复合检查设备还包括背散探测器和透射探测器,所述组合式X射线发生器和所述背散探测器位于所述一个检查通道内的待检目标的同一侧,并且所述组合扫描X射线发生器和所述透射探测器分居所述另一个检查通道内的待检目标的两侧,所述透射探测器被设置为]形或L形。
- 根据权利要求16所述的复合检查设备,其中,所述复合检查设备是开放式的或封闭式的。
- 一种复合检查设备,包括第一检查通道、第二检查通道、设置在所述第一检查通道与所述第二检查通道之间的一个如权利要求1~15中任一项所述的组合扫描X射线发生器、以及对应的探测器,其中,所述X射线发生器被构造成发出笔形X射线束,所述笔形X射线束适用于对所述第一检查通道内的待检目标进行背散射扫描并且被构造成发出扇形X射线束,所述扇形X射线束适用于对所述第二检查通道内的待检目标进行透射扫描。
- 一种利用如权利要求16至22中的任何一项所述的复合检查设备的用于待检目标的检查方法,所述方法包括:使第一待检目标从一个检查通道中穿过,以利用所述笔形X射线束对所述第一待检目标进行背散射扫描;以及使第二待检目标从另一个检查通道中穿过,以利用所述扇形X射线束对所述第二待检目标进行透射扫描。
- 一种用于人体的复合检查设备,包括:如权利要求1~15中任一项所述的扫描X射线发生器,配置成能够分别独立地产生用于背散射检测的笔形X射线束和用于透射检测的扇形X射线束,其中笔形X射线束能够扫描一扇形区域,扇形X射线束具有扇形轮廓覆盖一扇形区域;用于探测被人体散射的笔形X射线束的第一探测器;和用于探测透射通过人体的扇形X射线束的第二探测器;其中在第一探测器和第二探测器之间限定用于被检查人体的检查通道。
- 根据权利要求24所述的复合检查设备,其中第一探测器设置在检查通道和扫描X射线发生器之间面对人体以便接收从人体散射回的X射线;第一探测器包括狭缝以便笔形X射线束和扇形X射线束通过第一探测器投射到人体。
- 根据权利要求24所述的复合检查设备,其中第二探测器设置在检查通道的远离扫描X射线发生器的一侧用以接收透过人体的X射线;第二探测器呈C或[形,包括第二探测器竖直部分、接续第二探测器竖直部分的第二探测器上侧水平部分和接续第二探测器竖直部分的第二探测器下侧水平部分。
- 如权利要求25所述的复合检查设备,还包括复合检查设备准直器,配置成包括第一准直缝和第二准直缝,第一准直缝用于准直笔形X射线束,第二准直缝用于准直扇形X射线束,笔形X射线束和扇形X射线束分别穿过第一准直缝和第二准直缝投射到人体上,第一准直缝和第二准直缝通过隔板隔开。
- 如权利要求27所述的复合检查设备,其中,复合检查设备准直器包括调节器,配置成限制源准直器出口的高度和宽度;并且,调节器的开口的四边能够调节使得开口的尺寸能够将扇形X射线束约束到复合检查设备所需的范围。
- 如权利要求24所述的复合检查设备,还包括电控显示模块,用于与用户交互信息,以便控制复合检查设备的操作和显示检查的结果。
- 如权利要求16、22、24中的任何一项所述的复合检查设备,还包括传送装置,沿着检查通道做匀速平移运动,以便被检人体的全身被逐列背散射扫描或者透射扫描。
- 一种用于人体的检查方法,包括使用如权利要求16、22、24中的任何一项所述的复合检查设备执行人体检查其中,所述检查方法包括:使用扫描X射线发生器发射笔形X射线束执行背散射检测;以及如果需要,使用扫描X射线发生器发射扇形X射线束再次对人体执行透射检测。
- 一种利用如权利要求16、22、24中的任何一项所述的复合检查设备对待检目标进行检查的方法,所述方法包括:在完成了对待检目标的背散射扫描之后,再对所述待检目标进行透射扫描;或者在完成了对待检目标的透射扫描之后,再对所述待检目标进行背散 射扫描。
- 根据权利要求32所述的方法,其中,在对待检目标进行背散射扫描或透射扫描的过程中,所述待检目标相对于所述复合检查设备移动,或者所述复合检查设备相对于所述待检目标移动。
- 根据权利要求32所述的方法,其中,将两台或更多台复合检查设备级联起来或者组合起来使用,使得待检目标一次通过所述复合检查设备而无需返回或者翻转即可完成检查。
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CN201810447687.1A CN108318512A (zh) | 2018-05-10 | 2018-05-10 | 用于人体的透射-背散射组合检测设备和检测方法 |
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