公开(公告)号：US10230906B2

公开(公告)日：2019-03-12

申请号：US15525607

申请日：2015-12-09

Applicant: CARESTREAM HEALTH, INC.

Inventor： Karin Topfer ,  Jeffery R. Hawver ,  Eric M. Welch

IPC: H04N5/32 ,  H04N5/361 ,  G01T1/16 ,  H04N5/359

Abstract: A method of operating a DR detector including sequentially capturing image frames in the detector that include at least one dark image. The dark image is stored and a statistical measure for a subset of pixels in a captured image frame is compared with the same statistical measure of a subset of pixels in the stored dark image to detect an x-ray beam impacting the detector. An x-ray beam-on condition is indicated if a sufficient difference in intensity between the pixel subsets is detected. At least one more image frame is captured in the detector after detecting the x-ray beam. The current captured image and the at least one more image frame are added and the dark image is subtracted to form the exposed radiographic image.

公开(公告)号：US10039516B2

公开(公告)日：2018-08-07

申请号：US14534737

申请日：2014-11-06

Applicant: Carestream Health, Inc.

Inventor： Karin Topfer ,  John DeHority ,  Jeffrey R. Hawver

IPC: A61B6/00 ,  G06T5/00 ,  H04N5/32 ,  H04N5/359 ,  H04N5/361

Abstract: A radiographic imaging system and digital detector detect extraneous signals during DR detector image readout and compensate or remove extraneous signal artifacts from radiographic images. Novel capture and post processing procedures prevent undesirable noise artifacts from appearing in final radiographic images.

公开(公告)号：US20170374295A1

公开(公告)日：2017-12-28

申请号：US15525607

申请日：2015-12-09

Applicant: CARESTREAM HEALTH, INC.

Inventor： Karin Topfer ,  Jeffery R. Hawver ,  Eric M. Welch

IPC: H04N5/32 ,  H04N5/359 ,  H04N5/361 ,  G01T1/16

CPC classification number: H04N5/32 ,  G01T1/16 ,  H04N5/3597 ,  H04N5/361

Abstract: A method of operating a DR detector including sequentially capturing image frames in the detector that include at least one dark image. The dark image is stored and a statistical measure for a subset of pixels in a captured image frame is compared with the same statistical measure of a subset of pixels in the stored dark image to detect an x-ray beam impacting the detector. An x-ray beam-on condition is indicated if a sufficient difference in intensity between the pixel subsets is detected. At least one more image frame is captured in the detector after detecting the x-ray beam. The current captured image and the at least one more image frame are added and the dark image is subtracted to form the exposed radiographic image.

公开(公告)号：US20150131785A1

公开(公告)日：2015-05-14

申请号：US14534737

申请日：2014-11-06

Applicant: Carestream Health, Inc.

Inventor： Karin Topfer ,  John DeHority ,  Jeffrey R. Hawver

IPC: A61B6/00 ,  G06T5/00

CPC classification number: A61B6/5258 ,  A61B6/4233 ,  A61B6/5205 ,  G06T5/002 ,  G06T2207/10116 ,  G06T2207/20182 ,  H04N5/32 ,  H04N5/3597 ,  H04N5/361

Abstract: A radiographic imaging system and digital detector detect extraneous signals during DR detector image readout and compensate or remove extraneous signal artifacts from radiographic images. Novel capture and post processing procedures prevent undesirable noise artifacts from appearing in final radiographic images.

Abstract translation: 放射成像系统和数字检测器在DR检测器图像读出期间检测外来信号，并且从放射照相图像补偿或去除外来信号伪影。 新的捕获和后处理程序可防止不希望的噪声伪像出现在最终的放射照相图像中。