公开(公告)号：US09508522B2

公开(公告)日：2016-11-29

申请号：US14207216

申请日：2014-03-12

申请人： Samsung Electronics Co., Ltd. ,  SRI INTERNATIONAL

发明人： Shang-hyeun Park ,  Paul R. Schwoebel ,  Il-hwan Kim ,  Do-yoon Kim ,  Yong-chul Kim ,  Chang-soo Lee ,  Tae-won Jeong

IPC分类号： H01J35/06 ,  H01J35/04 ,  H01J19/44 ,  H01J3/02 ,  H01J3/38 ,  H01J1/30 ,  H01J1/90 ,  A61B6/00 ,  H01J1/304 ,  H01J19/24 ,  H01J19/42 ,  B82Y30/00

CPC分类号： H01J35/065 ,  A61B6/40 ,  A61B6/4064 ,  A61B6/4488 ,  B82Y30/00 ,  H01J1/304 ,  H01J1/90 ,  H01J3/021 ,  H01J3/38 ,  H01J19/24 ,  H01J19/42 ,  H01J19/44 ,  H01J35/045 ,  H01J35/06 ,  H01J2201/304 ,  H01J2201/30469 ,  H01J2201/3195 ,  H01J2203/0204 ,  H01J2203/0208 ,  H01J2203/0212 ,  H01J2203/0216 ,  H01J2203/0236 ,  H01J2235/06 ,  H01J2235/1212 ,  H01J2235/1291 ,  H01J2235/1295 ,  Y10S977/742 ,  Y10S977/939 ,  Y10S977/95

摘要： An x-ray generator includes a housing, a cathode block that is arranged in the housing and emits electrons via a field emission scheme, an anode block that is arranged in the housing and generates x-rays in response to the electrons emitted from the cathode block and collide with the anode block, and a heat sink block that contacts the cathode block and dissipates heat generated therein to an outside of the housing.

摘要翻译： X射线发生器包括壳体，阴极块，其布置在壳体中并经由场致发射方案发射电子;阳极块，布置在壳体中并响应于从阴极发射的电子产生X射线 阻挡并与阳极块碰撞，以及散热块，其接触阴极块并将其中产生的热量散发到壳体的外部。

公开(公告)号：US09167677B2

公开(公告)日：2015-10-20

申请号：US14455167

申请日：2014-08-08

申请人： Samsung Electronics Co., Ltd.

发明人： Do-yoon Kim ,  Il-hwan Kim ,  Shang-hyeun Park ,  Chang-soo Lee ,  Tae-won Jeong ,  Paul R. Schwoebel ,  Yong-chul Kim

IPC分类号： H01J9/04 ,  H05G1/32 ,  H01J9/44 ,  H01J35/06 ,  H01J37/34 ,  H01J19/42 ,  H01J29/48

CPC分类号： H05G1/32 ,  H01J9/025 ,  H01J9/045 ,  H01J9/445 ,  H01J19/42 ,  H01J29/485 ,  H01J35/065 ,  H01J37/3491 ,  H01J2201/30469

摘要： Provided are methods of aging an x-ray generator having carbon nanotube electron emitters. The method of aging an x-ray generator that includes a cathode, a gate electrode, and an anode, includes applying a desired, or alternatively predetermined anode voltage to the anode, and applying a direct current pulse voltage to the gate electrodes to emit electrons from electron emitters. The method further includes maintaining an anode current formed by electrons generated from the electron emitters constant.

摘要翻译： 提供了使具有碳纳米管电子发射体的x射线发生器老化的方法。 老化包括阴极，栅电极和阳极的x射线发生器的方法包括向阳极施加所需或预定的阳极电压，并向栅电极施加直流脉冲电压以发射电子 来自电子发射体。 该方法还包括维持由电子发射器产生的电子形成的阳极电流恒定。

公开(公告)号：US11123027B2

公开(公告)日：2021-09-21

申请号：US16089672

申请日：2017-03-31

申请人： The Regents of the University of California ,  SRI International

发明人： Paul R. Schwoebel ,  John M. Boone

IPC分类号： A61B6/00 ,  H01J35/14 ,  A61B6/06 ,  G01N23/046 ,  G01N23/083 ,  G01N23/10 ,  H01J35/04 ,  H01J35/10 ,  A61B6/02

摘要： Embodiments provide a stationary X-ray source for a multisource X-ray imaging system for tomographic imaging. The stationary X-ray source includes an array of thermionic cathodes and, in most embodiments a rotating anode. The anode rotates about a rotation axis, however the anode is stationary in the horizontal or vertical dimensions (e.g. about axes perpendicular to the rotation axis). The elimination of mechanical motion improves the image quality by elimination of mechanical vibration and source motion; simplifies system design that reduces system size and cost; increases angular coverage with no increase in scan time; and results in short scan times to, in medical some medical imaging applications, reduce patient-motion-induced blurring.

公开(公告)号：US11534118B2

公开(公告)日：2022-12-27

申请号：US17338299

申请日：2021-06-03

申请人： The Regents of the University of California ,  SRI International

发明人： Paul R. Schwoebel ,  John M. Boone

IPC分类号： A61B6/00 ,  H01J35/14 ,  A61B6/06 ,  G01N23/046 ,  G01N23/083 ,  G01N23/10 ,  H01J35/04 ,  H01J35/10 ,  A61B6/02

摘要： Embodiments provide a stationary X-ray source for a multisource X-ray imaging system for tomographic imaging. The stationary X-ray source includes an array of thermionic cathodes and, in most embodiments a rotating anode. The anode rotates about a rotation axis, however the anode is stationary in the horizontal or vertical dimensions (e.g. about axes perpendicular to the rotation axis). The elimination of mechanical motion improves the image quality by elimination of mechanical vibration and source motion; simplifies system design that reduces system size and cost; increases angular coverage with no increase in scan time; and results in short scan times to, in medical some medical imaging applications, reduce patient-motion-induced blurring.

公开(公告)号：US20200305809A1

公开(公告)日：2020-10-01

申请号：US16089672

申请日：2017-03-31

申请人： The Regents of the University of California ,  SRI International

发明人： Paul R. Schwoebel ,  John M. Boone

IPC分类号： A61B6/00 ,  H01J35/10 ,  H01J35/04 ,  H01J35/14 ,  A61B6/06 ,  G01N23/046 ,  G01N23/083 ,  G01N23/10

摘要： Embodiments provide a stationary X-ray source for a multisource X-ray imaging system for tomographic imaging. The stationary X-ray source includes an array of thermionic cathodes and, in most embodiments a rotating anode. The anode rotates about a rotation axis, however the anode is stationary in the horizontal or vertical dimensions (e.g. about axes perpendicular to the rotation axis). The elimination of mechanical motion improves the image quality by elimination of mechanical vibration and source motion; simplifies system design that reduces system size and cost; increases angular coverage with no increase in scan time; and results in short scan times to, in medical some medical imaging applications, reduce patient-motion-induced blurring.