摘要:
The imaging apparatus comprises a light-tight enclosure in which are enclosed: a detector adapted to detect a light signal emitted from a sample, a reflecting device comprising first and second reflecting portions reflecting toward first and second portions of the detector a signal emitted from first and second portions of the sample, the second reflecting portion reflecting toward a third portion of the detector a signal emitted from a the third portion of the sample and previously reflected by the first reflecting portion, a fourth portion of the detector directly detecting a signal emitted from a fourth portion of the sample.
摘要:
A luminescence imaging installation is disclosed comprising a lightproof enclosure containing: a support receiving a sample to be imaged; a detector detecting a luminescence image from the sample to be imaged; and a light reflector device reflecting light towards the detector. The light reflector device surrounds the support at least in part and presents at least two portions that are inclined relative to each other, each reflecting light towards the detector.
摘要:
The invention relates to using persistent luminescence nanoparticles, functionalised if necessary, in the form of an diagnosis agent for an in vivo optical imaging. Said nanoparticles are preferably consist of a compound selected from a group comprising (1) silicates, aluminates, aluminosilicates, germanates, titanates, oxysulphides, phosphates and vanadates, wherein said compounds contain at least one type of metal oxide, (2) the sulphides comprise at least one metal ion selected from zinc, strontium and calcium, and (3) metal oxides, wherein said compounds is doped with at least one rare earth ion, and possibly with at least one transition metal ion. In a preferred embodiment, the diagnosis agent is used for an organism vascularization imaging. A method and kit for detecting or quantifying in vitro a substance of biological or chemical interest in a sample by using said pre-functionalised nanoparticles are also disclosed.
摘要:
A luminescence imaging installation is disclosed comprising a lightproof enclosure containing: a support receiving a sample to be imaged; a detector detecting a luminescence image from the sample to be imaged; and a light reflector device reflecting light towards the detector The light reflector device surrounds the support at least in part and presents at least two portions that are inclined relative to each other, each reflecting light towards the detector.
摘要:
The invention relates to using persistent luminescence nanoparticles, functionalised if necessary, in the form of an diagnosis agent for an in vivo optical imaging. Said nanoparticles are preferably consist of a compound selected from a group comprising (1) silicates, aluminates, aluminosilicates, germanates, titanates, oxysulphides, phosphates and vanadates, wherein said compounds contain at least one type of metal oxide, (2) the sulphides comprise at least one metal ion selected from zinc, strontium and calcium, and (3) metal oxides, wherein said compounds is doped with at least one rare earth ion, and possibly with at least one transition metal ion. In a preferred embodiment, the diagnosis agent is used for an organism vascularisation imaging. A method and kit for detecting or quantifying in vitro a substance of biological or chemical interest in a sample by using said pre-functionalised nanoparticles are also disclosed.
摘要:
A method for obtaining an image of a sample having an external surface enclosing an inside, a light signal being emitted from within the inside, the method comprising: (a) providing two positioning images each comprising the external surface of the sample, (b) providing a light-emission image comprising data related to the light signal emitted from within the inside of the sample, (c) detecting a landmark pattern integral with the sample, (d) defining a transformation from the detected landmark position, (e) obtaining a referenced light-emission image by applying the transformation onto the light-emission image.
摘要:
The present invention concerns a method and implementing equipment for detecting at least one object containing a specified material and hidden from view. The method comprising stages of object irradiation by a collimated x-ray beam (21) with an energy range containing a photo-ionization threshold, of detection of the beam having passed through said object (24), is characterized in that furthermore a continuous function representing the attenuation or transmission of the x-rays expressed in terms of energy is determined and a search is made near the energy corresponding to said photo-ionization threshold along the curve representing said continuous function of attenuation or transmission of an inflection point characteristic of the presence of said material. Illustratively this invention is applicable to airport luggage inspection.
摘要:
The invention relates in particular to a detector for two-dimensional analysis of a flux of photons or neutral particles. The detector comprises a solid plane converter (5) constituted by a two-dimensional matrix of cells (such as 9c), an array of charge-multiplying wires (6) using stimulated ionization of a gas, and a cathode grid (7). The cells both convert the photons or neutral particles and collect the charge, and the ionization is preferably stimulated until self-regulating streams of electrons appear (streamer mode).The invention has application to imaging devices.
摘要:
(a) a measurement F0(x, y, δt) of the signals detected is provided; (b) on the one hand a first value F1(X, y, δt) is provided, termed the “integration” value and on the other hand a second value F2(x, y, δt) termed the “count” value is provided; (c) a value Fe(x0, y0, δt) of a number of signals is estimated from a combination of first F1(X0, y0, δt) and second F2(x0, y0, δt) values, on the basis of a criterion of detection in the neighbourhood.
摘要:
The method comprises the following stages: first the attenuation function of at least three reference materials are determined across a wide x-ray spectrum and projection functions (F.sub.p1, F.sub.p2, F.sub.p3, F.sub.p4) forming a base are derived therefrom, then the attenuation function in said x-ray spectrum of at least one target material is determined and the attenuation function of each target material is projected onto said base; further, for each point of the object (1), the attenuation function of the object (1) is determined in said x-ray spectrum and projected onto said base, and the projections so obtained are compared with the projection from each target material and from this comparison an inference is made whether at least one target material enters the constitution of the object (1) at the point of inspection. Application: luggage inspection and control.