公开(公告)号：US10799206B2

公开(公告)日：2020-10-13

申请号：US16146308

申请日：2018-09-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Srikrishnan Viswanathan ,  Arun Kumar Chandrashekarappa ,  Nasir Ahmed Desai ,  Xin Li ,  Bin Ye ,  Qingyong Ding ,  Youyou Chen

IPC: A61B6/00 ,  A61B6/02 ,  A61B6/08

Abstract: A method of calibrating a system for imaging a subject is provided. The method includes determining a position of an X-ray source of the system operative to transmit X-rays through the subject; and calibrating the position of the X-ray source with respect to a detector of the system, based at least in part on a field of view of the X-ray source, the detector operative to receive the X-rays transmitted by the X-ray source. In embodiments, the method includes positioning an X-ray source of the system via a controller at one or more calibration positions based at least in part on at least one camera of the system. In such embodiments the X-ray source is disposed on a mobile arm and operative to transmit X-rays through the subject, and a field of view of the X-ray source is directed substantially towards the detector at each of the calibration positions.

公开(公告)号：US20200237332A1

公开(公告)日：2020-07-30

申请号：US16256843

申请日：2019-01-24

Applicant: General Electric Company

Inventor： Dejun Wang ,  Srikrishnan V ,  Gireesha Rao ,  Katelyn Rose Nye ,  Nasir Ahmed Desai ,  Arun Kumar Chandrashekarappa ,  Huanzhong Li

IPC: A61B6/00 ,  H04N5/32 ,  G06T7/00

Abstract: Various methods and systems are provided for x-ray imaging. In one embodiment, a method for an image pasting examination comprises acquiring, via an optical camera and/or depth camera, image data of a subject, controlling an x-ray source and an x-ray detector according to the image data to acquire a plurality of x-ray images of the subject, and stitching the plurality of x-ray images into a single x-ray image. In this way, optimal exposure techniques may be used for individual acquisitions in an image pasting examination such that the optimal dose is utilized, stitching quality is improved, and registration failures are avoided.