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公开(公告)号：US07095821B2
公开(公告)日：2006-08-22
申请号：US10604498
申请日：2003-07-25
CPC分类号： H01J35/10 , H01J2235/081
摘要： An rotor assembly (30) for an imaging X-ray tube (32) is provided. The imaging X-ray tube rotor assembly (30) includes at least partially a magnetic non-corrosive material. A method of producing the imaging tube X-ray rotor assembly (30) is also provided including forming a rotor core (52) at least partially from a magnetic non-corrosive material.
摘要翻译： 提供了一种用于成像X射线管（32）的转子组件（30）。 成像X射线管转子组件（30）至少部分地包括磁性非腐蚀性材料。 还提供了一种制造成像管X射线转子组件（30）的方法，包括至少部分地由非磁性非磁性材料形成转子芯（52）。
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公开(公告)号：US06215850B1
公开(公告)日：2001-04-10
申请号：US09218347
申请日：1998-12-22
IPC分类号： H05G106
CPC分类号： H05G1/32
摘要： The present invention, in one form, includes methods and apparatus for reducing the x-ray dosage to a patient in a medical imaging system. In accordance with one embodiment of the present invention, a switching unit, or circuit, is coupled to a x-ray tube and a power supply to control the emission of x-ray beams from the x-ray tube. The switching unit is configured to alter a voltage and current signal applied to the x-ray tube control grid so that the magnitude of the x-ray beams is modified, or altered. By utilizing the switching unit the patient x-ray dosage is reduced and the magnitude of the x-ray beams may be configured to match the requirements of the application.
摘要翻译： 本发明以一种形式包括用于在医学成像系统中减少对患者的x射线剂量的方法和装置。 根据本发明的一个实施例，开关单元或电路耦合到X射线管和电源，以控制来自X射线管的x射线束的发射。 开关单元被配置为改变施加到X射线管控制栅格的电压和电流信号，使得X射线束的大小被修改或改变。 通过利用切换单元，减少患者x射线剂量，并且可以将x射线束的大小配置成与应用的要求相匹配。
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公开(公告)号：US5408381A
公开(公告)日：1995-04-18
申请号：US234221
申请日：1994-04-28
CPC分类号： G01N27/225 , Y10T29/435
摘要： A capacitance humidity sensor according to the invention has a film core which is in contact with a pair of conductive layers bonded to opposite faces of the core. The core is made of a polyimide having a dielectric constant which varies substantially linearly with humidity and which includes at least one ether linkage in the dianhydride portion thereof. The polyimide may also include at least one ether linkage in the diamine portion thereof and/or at least one fluorine atom in the diamine, dianhydride or both the diamine and dianhydride portions thereof.
摘要翻译： 根据本发明的电容式湿度传感器具有与与芯的相对面接合的一对导电层接触的膜芯。 芯由具有介电常数的聚酰亚胺制成，其介电常数基本上与湿度线性地变化，并且在其二酐部分中包括至少一个醚键。 聚酰亚胺还可以在其二胺部分中包含至少一个醚键和/或二胺，二酐中的至少一个氟原子或其二胺和二酐部分中的至少一个。
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