公开(公告)号：US20240225567A9

公开(公告)日：2024-07-11

申请号：US18491857

申请日：2023-10-23

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Yuji OKAJIMA ,  Shuya NAMBU ,  Hiroaki MIYAZAKI

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B6/4241 ,  A61B6/5205

Abstract: An X-ray CT apparatus according to an embodiment includes a photon-counting X-ray detector including a plurality of pixels and processing circuitry configured to acquire first data in a resolution priority mode from a first pixel set out of the pixels, acquire second data in an energy decomposition mode from a second pixel set, which is different from the first pixel set, out of the pixels at sampling intervals longer than those of the resolution priority mode, and generate third data based on the first data and the second data.

公开(公告)号：US20240130695A1

公开(公告)日：2024-04-25

申请号：US18491857

申请日：2023-10-22

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Yuji OKAJIMA ,  Shuya NAMBU ,  Hiroaki MIYAZAKI

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B6/4241 ,  A61B6/5205

Abstract: An X-ray CT apparatus according to an embodiment includes a photon-counting X-ray detector including a plurality of pixels and processing circuitry configured to acquire first data in a resolution priority mode from a first pixel set out of the pixels, acquire second data in an energy decomposition mode from a second pixel set, which is different from the first pixel set, out of the pixels at sampling intervals longer than those of the resolution priority mode, and generate third data based on the first data and the second data.

公开(公告)号：US20220202383A1

公开(公告)日：2022-06-30

申请号：US17644673

申请日：2021-12-16

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Yuji OKAJIMA ,  Akihiro ISHIDA ,  Hiroaki MIYAZAKI

IPC: A61B6/00 ,  A61B6/03

Abstract: An X-ray computed tomography apparatus according to an embodiment includes an X-ray detector and a processing circuitry. The X-ray detector includes a plurality of detection elements arranged in a plurality of rows at least in a channel direction. The processing circuitry acquires an estimated count number of X-rays incident on the X-ray detector for each of the plurality of detection elements and determines a bit number for transmission for detection data indicating a count number of each of the plurality of detection elements based on the estimated count number.