Eos Imaging

Smiths Heimann Sas

Commissariat a L'energie Atomique

Biospace Instruments

Biospace Lab

Smiths Detection France S.a.s.

Pascal DeSaute

Claude Hennion

Georges Charpak

Serge Maitrejean

Wafa Skalli

David Mitton

Jérôme Beucher

Irène Dorion

Camille Metz

Audrey Lemoussu

Pierre Morichau-beauchant

Khrystyna Kyrgyzov

Hamid Ouamara

Irene Dorion

Najib Gadi

Jean-Louis Gerstenmayer

Olivier Levrey

Nicolas Dumay

Stéphane Bleas

Laurent Jacquier

Cédric Nottebaert

David Vittecoq

Champlain Landry

Stéphane Veron

A radiological apparatus including: a gantry encapsulated within a cover, a patient platform, and two radiation sources with imaging directions orthogonal to each other, sliding vertically to perform vertical scanning of a patient standing on the platform. The gantry cover top view is L shaped, each radiation source being located outside the gantry cover, inside the angular sector of the L, and is encapsulated within a cover sliding vertically with the radiation source it encapsulates. The radiological apparatus also includes: a first security device stopping the vertical scanning, when it detects a patient body part going outside a first predetermined area, to avoid collision with the vertically sliding radiation sources covers, and a second security device stopping the vertical scanning, when it detects an object or a person external to the radiological apparatus within a second predetermined area, to avoid collision with the vertically sliding radiation sources covers.

Radiological imaging method and radiological apparatus with vertical scanning of 2 radiation sources

This invention relates to a method of radiography of an organ of a patient, comprising: first vertical scanning and said second vertical scanning being performed synchronously, wherein a computed correction is processed on both first and second raw images, on at least part of patient scanned height, for at least overweight or obese patients, so as to reduce, between first and second corrected images, cross-scattering existing between said first and second raw images, and wherein said computed correction processing on both said first and second raw images comprises: a step () of making a patient specific modeling, using as patient specific data therefore at least both first and second raw images, preferably mainly both first and second raw images, more preferably only both first and second raw images, a step () of determining a patient specific representation of radiation scattering by said patient specific modeling, a step () of processing said patient specific radiation scattering representation on both said first and second raw images so as to get said first and second corrected images.

Method of radiography of an organ of a patient

A radiological imaging method including: 2 radiation sources with imaging directions orthogonal to each other, performing vertical scanning of a standing patient along a vertical scanning direction, wherein the radiological method includes at least one operating mode in which: a frontal scout view is made so as to identify a specific bone(s) localization within the frontal scout view, both driving current intensity and voltage intensity modulations of the frontal radiation source, depending on patient thickness and on the identified specific bone(s) localization along the vertical scanning direction, are performed simultaneously, preferably synchronously, and automatically, so as to improve a compromise between: lowering the global radiation dose received by a patient during the vertical scanning, and increasing the local image contrasts of the identified specific bone(s) localization at different imaging positions along the vertical scanning direction, for the frontal image.

Radiological imaging method

A radiological imaging method including 2 radiation sources with imaging directions orthogonal to each other, performing vertical scanning of a standing patient along a vertical scanning direction, wherein radiological method includes at least one operating mode in which: a frontal scout view is made so as to identify a specific bone(s) localization within the frontal scout view, driving current intensity modulation of the frontal radiation source, depending on patient thickness and on the identified specific bone(s) localization along the vertical scanning direction, is performed automatically, so as to improve a compromise between: lowering the global radiation dose received by a patient during the vertical scanning, while keeping at a sufficient level the local image contrasts of the identified specific bone(s) localization at different imaging positions along the vertical scanning direction, for the frontal image.

Disclosed is a method of radiography of an organ of a patient, including: first and second vertical scanning being performed synchronously, wherein a computed correction is processed on both first and second raw images, on at least part of patient scanned height, for at least overweight or obese patients, so as to reduce, between first and second corrected images, cross-scattering existing between the first and second raw images, and wherein the computed correction processing on both the first and second raw images includes: a step of making a patient specific modeling, using as patient specific data therefore at least both first and second raw images, a step of determining a patient specific representation of radiation scattering by the patient specific modeling, a step of processing the patient specific radiation scattering representation on both the first and second raw images so as to get the first and second corrected images.

In one aspect, there is provided a method of denoising one or more inspection images comprising a plurality of pixels, comprising: receiving an inspection image generated by an inspection system configured to inspect one or more containers, the inspection image being corrupted by a Poisson-Gaussian noise and a variance of the noise being non-constant in the plurality of pixels, and denoising the received inspection image by applying, to the inspection image, a variance-stabilizing transformation for transforming the variance of the noise into a constant variance in the plurality of pixels, wherein the variance-stabilizing transformation is based on a descriptor associated with the angular divergence of the inspection radiation and the Poisson-Gaussian noise.

Denoising and/or zooming of inspection images

The invention relates to equipment () for the radiography of a load () moving relative thereto, the radiography equipment comprising a source () for emitting pulses () of divergent X-rays, a collimator () for the source for delimiting an incident x-ray beam (), and sensors () for receiving X-rays, which are aligned with the incident beam so as to collect the X-rays after the latter have passed through the load and generate raw image signals. The equipment includes a reference block () comprising intermediate x-ray sensors () which are to be located within the incident beam, between the source and the load, so as to be irradiated by at least two separate angular sectors of the incident beam, and which are to output separate reference signals corresponding to each angular sector to be used in the conversion of raw image signals into a portion of a radiographic image. The invention also relates to a corresponding method.

Equipment for the radiography of a load, comprising a reference block, and associated method

An X-ray detecting apparatus for the detection and localization of ionizing X-ray or gamma radiation in radiography, the apparatus comprising: an X-ray detector including: conversion means for converting incident x-ray photons of an incident x-ray photon beam into detectable electrical charges; and amplification means for amplifying the electrical charges in the detector by an non-linear amplification gain factor the non-linear amplification gain being characterized by a decrease in amplification gain at high fluxes of incident x-ray photons; and amplification gain adjustment means configured to vary the amplification gain of the amplification means according to the emission parameters of an x-ray source providing the incident x-ray photon beam for the radio-graphic examination to be performed and/or the transmitted beam received by the detector from the x-ray source via the subject being imaged. A radiographic imaging device and a method of operating the radiographic imaging device are also presented.

Radiographic imaging device and detector for a radiographic imaging device

An imaging apparatus has an emission device to emit X-rays and a detection device to detect X-rays. A detector collimator is located between the patient space and the detection device. The emission device and detection device operate while translating along a displacement axis, to take a plurality of acquisitions. The imaging apparatus has a setting device to modify a dimension of a collimator slit.

Imaging apparatus and method

A radiographic imaging device includes a gas avalanche detector detecting and locating X-ray or gamma ray ionizing radiation. The detector has a gas enclosure with an admission window for admitting incident X-ray photons; an intermediate plane electrode in the enclosure between and parallel to two end plane electrodes thereby forming an amplification space constituting a conversion space where the photons are convertible into electrical charges made up of primary electrons and corresponding ions; the intermediate electrode being operable at an electrical potential relative to the electrical potentials of the end electrodes suitable for generating an electric field causing multiplication of the electrons by the avalanche phenomenon in the amplification space near the intermediate electrode; one of the end electrodes being a collector electrode for picking up the electrical signals induced by the ions; and said window being level with the amplification space and between the intermediate plane and collector electrodes.

Radiographic imaging device and a detector for a radiographic imaging device

(a) a measurement F(x, y, &#x3b4;t) of the signals detected is provided; (b) on the one hand a first value F(X, y, &#x3b4;t) is provided, termed the 'integration' value and on the other hand a second value F(x, y, &#x3b4;t) termed the 'count' value is provided; (c) a value F(x, y, &#x3b4;t) of a number of signals is estimated from a combination of first F(X, y, &#x3b4;t) and second F(x, y, &#x3b4;t) values, on the basis of a criterion of detection in the neighborhood.

Method and installation for imaging

Two-dimensional detector of ionizing radiation and process for manufacturing this detector This detector comprises sheets () emitting particles by interaction with ionizing radiation, semiconducting layers () that alternate with the sheets and can be ionized by the particles, and groups of conducting tracks () in contact with the layers. Means () of creating an electric field are used to collect charge carriers generated in the layers due to interaction with particles, through the tracks. For example, the layer and the corresponding tracks are formed on each sheet and the sheets are then assembled together. For example, the invention is applicable to radiography and can achieve good X-ray detection efficiency and high spatial resolution at the same time.

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Paris, France

Pascal DeSaute