公开(公告)号：US20240065653A1

公开(公告)日：2024-02-29

申请号：US18356163

申请日：2023-07-20

Applicant: FUJIFILM CORPORATION

Inventor： Sho SHIMIZUKAWA ,  Takashi TAJIMA ,  Tatsuya TANEICHI ,  Naoyuki NISHINO ,  Hisatsugu HORIUCHI

IPC: A61B6/00 ,  A61B6/03 ,  A61B6/04

CPC classification number: A61B6/4014 ,  A61B6/032 ,  A61B6/0478 ,  A61B6/54

Abstract: A CT apparatus includes a plurality of imaging units, a rotation mechanism, and a CPU. The imaging unit includes a radiation source and a radiation detector. The rotation mechanism rotates the plurality of imaging units around a body axis of the subject while maintaining a disposition interval. An imaging control unit of the CPU controls operations of the plurality of imaging units and the rotation mechanism. An angular interval that is determined by a frame rate of the radiation detector and a rotation speed of the imaging unit and that defines an acquisition time of a projection image based on the radiation is the same for the plurality of imaging units. The plurality of imaging units have different phases in a rotation direction, and positions where the plurality of imaging units acquire the projection images are separated by a set angle that is less than the angular interval.

公开(公告)号：US20240112438A1

公开(公告)日：2024-04-04

申请号：US18475226

申请日：2023-09-27

Applicant: FUJIFILM CORPORATION

Inventor： Masataka SUGAHARA ,  Koji TANINAI ,  Tatsuya TANEICHI ,  Yuji JIBIKI ,  Hisatsugu HORIUCHI

IPC: G06V10/25 ,  G06T7/00 ,  G06T7/70

CPC classification number: G06V10/25 ,  G06T7/0012 ,  G06T7/70 ,  G06T2207/10116 ,  G06T2207/20044

Abstract: An information processing apparatus comprising at least one processor, wherein the processor is configured to: acquire at least one optical image obtained by optically imaging a subject; acquire at least one radiation image obtained by radiography of the subject from a direction substantially the same as an imaging direction of the optical imaging; estimate a position of at least one first region of interest based on the optical image; and specify a second region of interest corresponding to the position of the first region of interest in the radiation image.

公开(公告)号：US20240065644A1

公开(公告)日：2024-02-29

申请号：US18448982

申请日：2023-08-14

Applicant: FUJIFILM CORPORATION

Inventor： Sho SHIMIZUKAWA ,  Takashi TAJIMA ,  Tatsuya TANEICHI ,  Naoyuki NISHINO ,  Hisatsugu HORIUCHI

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B6/4014 ,  A61B6/4078 ,  A61B6/5241 ,  A61B6/54

Abstract: An imaging control unit performs conventional scanning, which directs a rotation mechanism to rotate a radiation source and a radiation detector without changing a positional relationship between a subject, and the radiation source and the radiation detector in a rotation axis direction, directs the radiation source to emit radiation whenever the radiation source and the radiation detector are rotated by a preset angle, and directs the radiation detector to output a projection image, at a plurality of height positions along the rotation axis direction. The image processing unit generates a tomographic image on the basis of the projection images obtained at the plurality of height positions.

公开(公告)号：US20240112439A1

公开(公告)日：2024-04-04

申请号：US18475227

申请日：2023-09-27

Applicant: FUJIFILM CORPORATION

Inventor： Masataka SUGAHARA ,  Koji TANINAI ,  Yuji JIBIKI ,  Tatsuya TANEICHI ,  Hisatsugu HORIUCHI

IPC: G06V10/25 ,  A61B6/00 ,  G06T7/00 ,  G06T7/70

CPC classification number: G06V10/25 ,  A61B6/52 ,  G06T7/0012 ,  G06T7/70 ,  G06T2207/10116 ,  G06T2207/20044 ,  G06T2207/30092

Abstract: An information processing apparatus comprising at least one processor, wherein the processor is configured to: acquire at least one optical image obtained by optically imaging a subject from a first direction; estimate a position of at least one first region of interest based on the optical image; acquire a plurality of radiation images obtained by continuously performing radiography of a state in which the subject swallows a sample from the first direction; specify a second region of interest corresponding to the position of the first region of interest in the radiation image; monitor a position of the sample based on the plurality of radiation images; and change an imaging condition for the radiography based on a positional relationship between the second region of interest and the sample.

公开(公告)号：US20240065652A1

公开(公告)日：2024-02-29

申请号：US18356161

申请日：2023-07-20

Applicant: FUJIFILM CORPORATION

Inventor： Sho SHIMIZUKAWA ,  Takashi TAJIMA ,  Tatsuya TANEICHI ,  Naoyuki NISHINO ,  Hisatsugu HORIUCHI

IPC: A61B6/00 ,  A61B6/03

CPC classification number: A61B6/4014 ,  A61B6/032 ,  A61B6/5247 ,  A61B6/54 ,  A61B6/0478

Abstract: A CT apparatus includes a plurality of imaging units, a rotation mechanism, a radiation source elevating mechanism, a detector elevating mechanism, and a CPU. The imaging unit includes a radiation source that emits radiation having a quadrangular pyramid shape to a subject and a radiation detector in which a plurality of pixels detecting the radiation transmitted through the subject are two-dimensionally arranged. The rotation mechanism rotates the plurality of imaging units around a body axis of the subject. The radiation source elevating mechanism and the detector elevating mechanism change an interval between the plurality of imaging units in a rotation axis direction. An imaging control unit of the CPU controls operations of the plurality of imaging units, the rotation mechanism, the radiation source elevating mechanism, and the detector elevating mechanism.

公开(公告)号：US20240065646A1

公开(公告)日：2024-02-29

申请号：US18448980

申请日：2023-08-14

Applicant: FUJIFILM CORPORATION

Inventor： Sho SHIMIZUKAWA ,  Tatsuya TANEICHI ,  Takashi TAJIMA ,  Naoyuki NISHINO ,  Hisatsugu HORIUCHI

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/035 ,  A61B6/4014 ,  A61B6/4085

Abstract: A radiation source includes a radiation tube having a cathode which is a cold cathode. An imaging control unit directs the radiation source to intermittently and alternately emit the first radiation having a first energy distribution and the second radiation having a second energy distribution different from the first energy distribution whenever a rotation mechanism rotates the radiation source and a radiation detector by a preset angle. The imaging control unit directs the radiation detector to output a first projection image based on the first radiation and a second projection image based on the second radiation which are obtained by the intermittent emission of the first radiation and the second radiation. An image processing unit generates a tomographic image on the basis of the first projection image and the second projection image.

公开(公告)号：US20230016138A1

公开(公告)日：2023-01-19

申请号：US17807858

申请日：2022-06-20

Applicant: FUJIFILM CORPORATION

Inventor： Hisatsugu HORIUCHI ,  Munetaka KATO ,  Tatsuya TANEICHI ,  Naoyuki NISHINO ,  Takeyasu KOBAYASHI

IPC: A61B6/00 ,  A61B6/03 ,  G01N23/046

Abstract: A radiation detector includes a sensor panel unit, a support table to which the sensor panel unit is attached, and two fixing members. The sensor panel unit includes two sensor panels. The sensor panel has pixels that sense visible light converted from radiation and generate charge. The sensor panel unit has a configuration in which an end portion of one sensor panel and an end portion of the other sensor panel are arranged to overlap each other in a thickness direction. A first fixing member fixes two sensor panels in an overlap region in which the end portions overlap. A second fixing member fixes the sensor panel unit and the support table in the overlap region. The second fixing member at least partially overlaps the first fixing member in the overlap region in a plan view of the sensor panel unit in the thickness direction.