公开(公告)号：US20240108223A1

公开(公告)日：2024-04-04

申请号：US18541046

申请日：2023-12-15

Applicant: NU-RISE Lda

Inventor： Luis Miguel da Conceição Moutinho ,  Joana Isabel Ferreira dos Santos Melo

IPC: A61B5/00 ,  A61B5/055 ,  A61M25/10 ,  A61N5/10 ,  G01T1/20

CPC classification number: A61B5/0036 ,  A61B5/055 ,  A61M25/10 ,  A61N5/1007 ,  A61N5/1027 ,  G01T1/2002 ,  G01T1/2006 ,  A61M2025/1079 ,  A61N2005/1008

Abstract: Interstitial brachytherapy is a cancer treatment in which radioactive material is placed directly in the target tissue of the affected site using an afterloader. The accuracy of this placement is monitored in real time using a urinary catheter that locates the radioactive material according to the radiation levels measured by sensors in the walls of the urinary catheter. A scintillator that is embedded in the walls of the urinary catheter produces light when irradiated by the radioactive material. This light is proportional to the level of radiation at each location. The light produced by each scintillator is carried through optical fibers and then converted to an electrical signal that is proportional to the light and the radiation level at each location. The radioactive material is located according to the plurality of electrical signals. This location can be used as quality control feedback to the afterloader.

公开(公告)号：US20240045083A1

公开(公告)日：2024-02-08

申请号：US18461716

申请日：2023-09-06

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

Inventor： Hiroyasu KONDO ,  Makoto HAYASHI ,  Kazumitsu MORIMOTO

IPC: G01T1/20 ,  G01T1/202

CPC classification number: G01T1/2006 ,  G01T1/2002 ,  G01T1/2023

Abstract: To provide an X-ray ceramic scintillator array as well as a radiation detector and a radiation inspection apparatus using the same, which prevents a resin used for a reflective layer of the scintillator array from being colored due to X-ray irradiation so as to realize a significant improvement against the output drop of the scintillator array. The resin used for the reflective layer of the X-ray ceramic scintillator array has a feature wherein a ratio of absorption intensity in a wavenumber range of 1490 cm−1 to 1750 cm−1 to absorption intensity in a wavenumber range of 2500 cm−1 to 2990 cm−1 has a value that falls within a specific range in an absorption spectrum based on Fourier transform infrared spectrometry (FT-IR).

公开(公告)号：US11819348B2

公开(公告)日：2023-11-21

申请号：US16836735

申请日：2020-03-31

Applicant: Varex Imaging Corporation

Inventor： Arundhuti Ganguly ,  Ivan P Mollov

IPC: A61B6/00 ,  G01T1/34 ,  G01T1/20

CPC classification number: A61B6/4042 ,  A61B6/4035 ,  A61B6/482 ,  G01T1/2006 ,  G01T1/2014 ,  G01T1/34

Abstract: Some embodiments include an x-ray system, comprising: an x-ray imager including a plurality of imaging layers; an x-ray source configured to generate an x-ray beam; and an x-ray prefilter; wherein: the x-ray prefilter is configured to adjust an energy spectrum of the x-ray beam to create or decrease a level of x-ray fluence of a local minimum between two of a plurality of local maximums.

公开(公告)号：US11774607B2

公开(公告)日：2023-10-03

申请号：US17814900

申请日：2022-07-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taiji Tomita ,  Tomoyuki Oike ,  Tamaki Kobayashi ,  Masami Tsukamoto

IPC: G01T1/20 ,  H01L27/146

CPC classification number: G01T1/2002 ,  G01T1/2006 ,  H01L27/14663

Abstract: A scintillator panel is provided. The scintillator panel comprises: a support; a scintillator configured to generate light in accordance with incident radiation; a light reflecting layer arranged between the support and the scintillator and configured to reflect the light; a semi-transmissive layer arranged between the light reflecting layer and the scintillator and configured to reflect part of the light and transmit other part of the light; and an optical adjustment layer arranged between the light reflecting layer and the semi-transmissive layer and configured to make an optical distance between the light reflecting layer and the semi-transmissive layer become a length with which the light resonates.

公开(公告)号：US11774605B2

公开(公告)日：2023-10-03

申请号：US17584194

申请日：2022-01-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroshi Saito ,  Nobuhiro Yasui ,  Yoshihiro Ohashi ,  Yoshinori Kotani ,  Satoshi Yamabi

IPC: G01T1/20

CPC classification number: G01T1/2002 ,  G01T1/2006

Abstract: A scintillator unit that can reduce crosstalk when the scintillator unit includes a plurality of scintillators and a radiation detector are provided. More specifically, a scintillator unit includes a reflective layer between a plurality of scintillators and the plurality of scintillators, wherein an adhesive layer and a low-refractive-index layer with a lower refractive index than the adhesive layer are located in this order on the scintillators between the scintillators and the reflective layer.

公开(公告)号：US11762108B2

公开(公告)日：2023-09-19

申请号：US17154217

申请日：2021-01-21

Applicant: LightSpin Technologies Inc.

Inventor： Eric Harmon

IPC: A61B6/03 ,  G01T1/20 ,  A61B6/00 ,  G01T1/29

CPC classification number: G01T1/20182 ,  A61B6/037 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/4258 ,  A61B6/4266 ,  A61B6/4275 ,  G01T1/2002 ,  G01T1/2006 ,  G01T1/2018 ,  G01T1/20181 ,  G01T1/20184 ,  G01T1/20185 ,  G01T1/20186 ,  G01T1/2985

Abstract: A gamma-ray detector includes a plurality of modular one-dimensional arrays of monolithic detector sub-modules. Each monolithic detector sub-module includes a scintillator layer, a light-spreading layer, and a photodetector layer. The photodetector layer comprises a two-dimensional array of photodetectors that are arranged in columns and rows. A common printed circuit board is electrically coupled to the two-dimensional array of photodetectors of the plurality of modular one-dimensional arrays of monolithic detector sub-modules of a corresponding modular one-dimensional array. The two-dimensional array of photodetectors can be electrically coupled in a split-row configuration or in a checkerboard configuration. The two-dimensional array of photodetectors can also have a differential readout.

公开(公告)号：US11762107B2

公开(公告)日：2023-09-19

申请号：US16470385

申请日：2017-12-21

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Kok

IPC: A61B6/00 ,  G01T1/20 ,  G01T1/24 ,  G01T1/164 ,  G01T1/161 ,  G01T1/16 ,  A61B6/03

CPC classification number: G01T1/20181 ,  A61B6/03 ,  A61B6/032 ,  A61B6/035 ,  A61B6/037 ,  A61B6/42 ,  A61B6/4208 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/4258 ,  A61B6/4266 ,  A61B6/44 ,  A61B6/4429 ,  A61B6/4435 ,  A61B6/4441 ,  A61B6/4447 ,  G01T1/16 ,  G01T1/161 ,  G01T1/1603 ,  G01T1/164 ,  G01T1/1606 ,  G01T1/1611 ,  G01T1/1612 ,  G01T1/1614 ,  G01T1/1615 ,  G01T1/1617 ,  G01T1/1618 ,  G01T1/20 ,  G01T1/2002 ,  G01T1/2006 ,  G01T1/2008 ,  G01T1/2018 ,  G01T1/20183 ,  G01T1/20185 ,  G01T1/24 ,  G01T1/243 ,  G01T1/249

Abstract: The invention relates to a combined detector (660) comprising a gamma radiation detector (100) and an X-ray radiation detector (661). The gamma radiation detector (100) comprises a gamma scintillator array (101x, y), an optical modulator (102) and a first photodetector array (103a, b) for detecting the first scintillation light generated by the gamma scintillator array (101x, y). The optical modulator (102) is disposed between the gamma scintillator array (101x, y) and the first photodetector array (103a, b) for modulating a transmission of the first scintillation light between the gamma scintillator array (101x, y) and the first photodetector array (103a, b). The optical modulator (102) comprises at least one optical modulator pixel having a cross sectional area (102′) in a plane that is perpendicular to the gamma radiation receiving direction (104). The cross sectional area of each optical modulator pixel (102′) is greater than or equal to the cross sectional area of each photodetector pixel (103′a, b).

公开(公告)号：US11726219B2

公开(公告)日：2023-08-15

申请号：US17536490

申请日：2021-11-29

Applicant: JEFFERSON SCIENCE ASSOCIATES, LLC

Inventor： Pavel V. Degtiarenko ,  Igor Musatov

IPC: G01T1/22 ,  G01T1/20 ,  G01T3/06

CPC classification number: G01T1/22 ,  G01T1/2006 ,  G01T3/06

Abstract: A particle imaging method for distinguishing between types of incident particles, such as neutrons, photons, and alphas, and improving the position resolution of particle imaging devices with matrix readout. The method includes high frequency multisampling readout electronics that provides the sequences of multiple measurements for each detected event, resulting in recorded detailed waveform information describing the signals. Such detailed information is used to approximate each signal waveform with a parameterized function in which the extracted parameter sets determine the type of the incident particle in an optimized fashion. The detailed event-by-event multisampling information for each signal readout channel in the matrix readout of the radiation imaging devices improves and optimizes the position resolution for variable shapes of the signals. Such devices can be used in mixed radiation fields, creating a new class of multimodal photon and neutron imagers.

公开(公告)号：US20230213666A1

公开(公告)日：2023-07-06

申请号：US18146101

申请日：2022-12-23

Applicant: NUCTECH COMPANY LIMITED

Inventor： Jianmin LI ,  Guoping ZHU ,  Ming RUAN ,  Kun ZHAO ,  Yanli DENG ,  Junli LI ,  Qitian MIAO

IPC: G01T1/20

CPC classification number: G01T1/2002 ,  G01T1/2006

Abstract: Provided is a device of detecting a ray dose adaptable for coupling with a terminal, including: a housing, a scintillator and a light shielding layer. The housing has an accommodating space and a window, the accommodating space is in communication with the window; the scintillator is configured to receive a ray and convert a received ray into a visible light, the scintillator is located in the accommodating space, the scintillator covers the window, an outer surface of the scintillator includes a first outer surface and a second outer surface, and the first outer surface is adapted to a camera of the terminal; and the light shielding layer is configured to shield a visible light in an external environment from illuminating on the scintillator, the light shielding layer is arranged on the second outer surface of the scintillator.

公开(公告)号：US11684321B2

公开(公告)日：2023-06-27

申请号：US17412734

申请日：2021-08-26

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Go Kawata ,  Ryo Okuda

IPC: A61B6/03 ,  G01T1/16 ,  G01T1/20 ,  G01T1/22 ,  G01T1/29 ,  A61B6/00 ,  G01N23/20066 ,  G01T1/164

CPC classification number: A61B6/037 ,  A61B6/4241 ,  A61B6/4258 ,  A61B6/4266 ,  A61B6/4275 ,  A61B6/482 ,  A61B6/483 ,  A61B6/5205 ,  A61B6/5282 ,  G01N23/20066 ,  G01T1/1642 ,  G01T1/2006 ,  G01T1/2018 ,  G01T1/20181 ,  G01T1/20182 ,  G01T1/22 ,  G01T1/2907 ,  G01T1/2914 ,  G01T1/2985 ,  G01N2223/108

Abstract: A radiation diagnostic device according to an aspect of the present invention includes a first detector, a second detector, and processing circuitry. The first detector detects Cherenkov light that is generated when radiation passes. The second detector is disposed to be opposed to the first detector on a side distant from a generation source of the radiation, and detects energy information of the radiation. The processing circuitry specifies Compton scattering events detected by the second detector, and determines an event corresponding to an incident channel among the specified Compton scattering events based on a detection result obtained by the first detector.