公开(公告)号：US09615803B2

公开(公告)日：2017-04-11

申请号：US14305410

申请日：2014-06-16

Applicant: General Electric Company

Inventor： Yun Zou ,  Rowland Frederick Saunders ,  Scott Stephen Zelakiewicz ,  Floribertus P. M. Heukensfeldt Jansen ,  Mark Alan Frontera ,  Uwe Wiedmann ,  Vivek Walimbe

IPC: G01N23/04 ,  A61B6/00

CPC classification number: A61B6/469 ,  A61B6/4405 ,  A61B6/488 ,  A61B6/542 ,  A61B6/544 ,  A61B6/545 ,  A61B6/563

Abstract: In accordance with one aspect of the present system, an X-ray detector of an X-ray imaging system includes a communication module configured to receive a pre-shot image from a detection circuitry and receive one or more pre-shot parameters from a source controller of the X-ray imaging system. The X-ray detector further includes an analysis module configured to determine one or more image characteristics of the pre-shot image. The X-ray detector further includes a determination module configured to calculate one or more main-shot parameters based on the one or more pre-shot parameters and the one or more image characteristics. The determination module is further configured to send the one or more main-shot parameters to the source controller of the X-ray imaging system.

公开(公告)号：US20170086775A1

公开(公告)日：2017-03-30

申请号：US14871270

申请日：2015-09-30

Applicant: General Electric Company

Inventor： Priti Madhav ,  Uwe Wiedmann ,  Eric Biehr ,  Jiahua Fan ,  Jean-Francois Larroux ,  Vijay Subramanian

IPC: A61B6/00 ,  A61B6/03

CPC classification number: A61B6/482 ,  A61B6/032 ,  A61B6/06 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/488 ,  A61B6/542 ,  A61B6/544 ,  A61B6/545 ,  G06F19/00

Abstract: An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector. The processing unit is configured to determine a voltage delivery configuration for the X-ray source based on at least one of a patient size, a clinical task, or scan parameters. The voltage delivery configuration includes at least one of a transition configuration or a voltage threshold. The transition configuration corresponds to a transition between a high and low voltage. Portions of acquired data acquired above the voltage threshold are grouped as high energy data and portions acquired below are grouped as low energy data. The processing unit is also configured to implement the voltage delivery configuration on the CT acquisition unit, and to control the CT acquisition unit to perform an imaging scan using the determined voltage delivery configuration.

公开(公告)号：US20160363674A1

公开(公告)日：2016-12-15

申请号：US14739981

申请日：2015-06-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Biju Jacob ,  Jianjun Guo ,  Brian David Yanoff ,  Uwe Wiedmann

IPC: G01T1/24 ,  H04N5/32

CPC classification number: G01T1/247 ,  H04N5/32 ,  H04N5/3205 ,  H04N5/35572 ,  H04N5/37452

Abstract: A digital X-ray detector is provided. The digital X-ray detector includes multiple pixels, each pixel including a pinned photodiode, and multiple readout channels coupled to each pinned photodiode, wherein each readout channel includes at least one charge-storage capacitor, an amplifier, and a transfer gate. The digital X-ray detector also includes control circuitry coupled to each pixel of the multiple pixels and configured to selectively control a flow of photocharge generated by each pinned photodiode to a respective at least one charge-storage capacitor of each respective readout channel via control of each respective transfer gate of each respective readout channel.

Abstract translation: 提供数字X射线检测器。 数字X射线检测器包括多个像素，每个像素包括钉扎光电二极管和耦合到每个钉扎光电二极管的多个读出通道，其中每个读出通道包括至少一个电荷存储电容器，放大器和传输门。 数字X射线检测器还包括耦合到多个像素的每个像素的控制电路，其被配置为通过控制每个相应读出通道的相应的至少一个电荷存储电容器来选择性地控制由每个被钉扎的光电二极管产生的光电荷的流动 每个相应的读出通道的每个相应的传输门。

公开(公告)号：US20150110251A1

公开(公告)日：2015-04-23

申请号：US14061509

申请日：2013-10-23

Applicant: General Electric Company

Inventor： Uwe Wiedmann ,  Antonio Caiafa ,  Dominique Poincloux

IPC: H01J35/14

CPC classification number: H01J35/14

Abstract: Issues related to maintaining the size of a focal spot on the target material of an X-ray source are addressed by linking the currents used in a magnetic focusing system employed in the X-ray source. The size of the focal spot on the target is less sensitive to current changes applied to the magnetic focusing system due to this linkage.

Abstract translation: 通过连接在X射线源中使用的磁聚焦系统中使用的电流来解决与维持X射线源的目标材料上焦点尺寸有关的问题。 由于这种联动，目标上焦点的大小对施加到磁聚焦系统的电流变化较不敏感。

公开(公告)号：US20150049857A1

公开(公告)日：2015-02-19

申请号：US13969279

申请日：2013-08-16

Applicant: General Electric Company

Inventor： Uwe Wiedmann

IPC: G21K1/02 ,  G01N23/04

CPC classification number: G01N23/046 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4441 ,  A61B6/58 ,  A61B6/582 ,  G01N2223/303 ,  G01N2223/316 ,  G01N2223/32

Abstract: Use of a reference detector to characterize an X-ray emission focal spot is disclosed. In certain embodiments, the reference detector may contain one or more openings or apertures that may be used to acquire localized X-ray intensity information used to derive the focal spot characteristics. In certain embodiments, the reference detector is on the source-side of the imaged volume.

Abstract translation: 公开了使用参考检测器来表征X射线发射焦点。 在某些实施例中，参考检测器可以包含一个或多个可用于获取用于导出焦点特性的局部X射线强度信息的开口或孔。 在某些实施例中，参考检测器位于成像体积的源侧。