公开(公告)号：US20220000437A1

公开(公告)日：2022-01-06

申请号：US16920034

申请日：2020-07-02

Applicant: Canon Medical Systems Corporation

Inventor： Xiaochun LAI ,  Liang CAI ,  Yi QIANG ,  Xiaohui ZHAN

IPC: A61B6/00 ,  A61B6/03

Abstract: An embodiment of a computed tomography apparatus includes an x-ray source and scan control circuity configured to control the x-ray source to expose a subject with x-rays over a scan having a plurality of views. A detector is disposed to receive x-rays from the x-ray source, has a plurality of anodes arranged in groups, and a common conductive strip between the anodes. Photon counting circuits are respectively provided for each of the anodes and have adjustable operating parameters. Connection circuitry is configured to adaptively connect, in a first mode, each anode to one of the photon counting circuits and, in a second mode, each anode in a group to a same one of the photon counting circuits. Processing circuitry, connected to the connection circuitry and the photon counting circuits, is configured to, for each of the views, select the first mode or the second mode and adjust the operating parameters based upon exposure data obtained from exposing the subject with the x-rays from the x-ray source.