Abstract: The present invention is a device and method for the non-invasive detection of hazardous materials in an aquatic environment, wherein the device comprises a sealed housing, in which there is a fast neutron generator (101) surrounded by ? particle detectors (106), and gamma quantum detector (111), wherein the fast neutron generator (101) emits neutrons in the direction of the tested object (107) through the neutron and/or gamma quanta guide (108), and the gamma quanta detector records gamma quanta emitted by the nuclei of the tested object (107) transmitted through neutron and/or gamma quanta guide (110).

Abstract: A detector device for determining a position of reaction of gamma quanta, the device comprising: a detection layer comprising: at least one polymeric or inorganic scintillator (12, 22) for absorbing gamma quanta and for emitting and propagating scintillation photons; and photoelectric converters (14,24) for converting light signals of the scintillation photons into electric signals; and at least one additional layer comprising: strips of material (13, 23) for absorbing the scintillation photons and for emitting and propagating secondary photons; and photoelectric converters (15, 25) for converting the light signals for the scintillation photons into electric signals.

Abstract: A tomograph for imaging an interior of an examined object, the tomograph comprising: TOF-PET detection modules configured to register annihilation quanta and deexcitation quanta and a data reconstruction system (103, 203, 303) configured to reconstruct an ortho-positronium to-ps(x,y,z) lifetime image and a probability of production of positronium Ppoz(x,y,z) as a function of position in the imaged object, on the basis of a difference (At) between a time of annihilation (ta) and a time of emission of a deexcitation quantum (te), wherein the TOF-PET detection modules (101, 201, 301) comprise scintillators having a time resolution of less than 100 ps.

Abstract: A method for determining parameters of a reaction of a gamma quantum within a scintillator of a PET scanner, comprising transforming a signal measured in the scintillator using at least one converter into an electric measurement signal, wherein the method comprises the steps of: obtaining access to a reference parameters memory (10) comprising reference signals represented in a time-voltage (Wt-v) coordinate system and in a time-amplitude fraction (Wt-f) coordinate system and having associated reaction parameters; sampling the electric measurement signal (S) measured in the time-voltage (PT-V) coordinate system and in the time-amplitude fraction (Pt-f) coordinate system; comparing results of the sampling (PT-V, PM) of the electric measurement signal (S) with the reference signals (Wt-V, Wt-f) and selecting reference shape parameters so that the reference (W) is best fitted to the results of the sampling (PT-V, PM) of the electric measurement signal (S); and determining the parameters of the reaction of the ga

Abstract: A method for measuring parameters of an analog signal to determine times at which the analog signal (S) crosses pre-determined voltage thresholds (VA, VB, VC, VD), the method comprising the steps of: splitting the analog signal (S) into a number of interim signals (SA, SB, SC, SD), the number of the interim signals corresponding to the number of the preset voltage thresholds (VA, VB, VC, VD); providing an FPGA system (10) comprising differential buffers (11A, 11B, 11C, 11D) with outputs connected to a number of sequences (20A, 20B, 20C, 20D) of delay elements (21, 22, 23), the number of sequences of delay elements corresponding to the number of the preset voltage thresholds (VA, VB, VC, VD); inputting, to an input of each differential buffer (11A, 11B, 11C, 11D), one interim signal (SA, SB, SC, SD) and a reference voltage corresponding to a particular preset voltage threshold (VA, VB, VC, VD); reading, by means of vector generators (31A, 31B, 31C, 31D), assigned separately to each of the sequences (20A, 20B,

Abstract: A hybrid TOF-PET/CT tomograph comprising a detection chamber, gamma radiation detectors, X-ray detectors and a movable X-ray source, wherein the gamma radiation detectors (150, 250, 350, 450, 550) and the X-ray detectors (170, 270, 370, 470, 570) surround the detection chamber (102, 202, 302, 402, 502) around the whole perimeter of the detection chamber (102, 202, 302, 402, 502), and wherein the gamma radiation detectors (150, 250, 350, 450, 550) are located closer to the longitudinal axis (115, 215, 315, 415, 515) of the detection chamber (102, 202, 302, 402, 502) than the X-ray detectors (170, 270, 370, 470, 570), and wherein the gamma radiation detectors (150, 250, 350, 450, 550) comprise polymer strips (151, 251, 351, 451, 551) made of a scintillation material having a density lower than the density of the X-ray radiation detectors (171, 271, 371, 471, 571).

Abstract: A method for calibration of TOF-PET detectors comprising polymeric scintillator strips and photoelectric converters, wherein cosmic radiation is used as a source of radiation, the method comprising the steps of: recording times of reactions of particles of cosmic radiation with the scintillator strips (101, 411, 421, 511, 521); determining spectra (301) of distribution of differences in the times at which pulses are recorded at ends of the scintillator strips (101, 411, 421, 511, 521) connected to photoelectric converters (102, 103, 412, 413, 422, 423, 512, 513, 522, 523); using the determined spectra (301) to determine timing synchronization constants of the photoelectric converters (102, 103, 412, 413, 422, 423, 512, 513, 522, 523), the constants being related to: delays within the electronics; speed of light propagation within the scintillator strip of the detection module; and resolution of the difference in times of the signals recorded at the ends of the module.

Abstract: A system for acquisition of tomographic measurement data from measurement signals (S) of positron emission tomography (PET) or single-photon emission computed tomography (SPECT) detectors, the system comprising: a front-end electronic assembly (2) configured to convert the measurement signals (S) into digital and analog signals (DAS); a measurement electronics assembly (3) comprising time to digital converter (TDC) modules (31) configured to determine times (T) of pulses in digital signals (DS).

Abstract: A hybrid TOF-PET/MRI tomograph comprising a TOF-PET tomograph and an MRI tomograph, wherein the TOF-PET tomograph (120) comprises polymer scintillation strips (121) arranged circumferentially inside the working area of the magnetic field of the receiving-transmitting coil (131) of the MRI tomograph (130) and photoelectric converters (122) for converting light signals from the scintillation strips (121) to electrical signals, wherein the photoelectric converters (122) are arranged outside the working area of magnetic field of the MRI tomograph (130).

Abstract: A method for determining parameters of reaction of a gamma quantum within a scintillation detector of a PET scanner, wherein the signal measured by the scintillator is transformed in at least one photomultiplier into an electric measured signal.

Abstract: The subject matters of the invention is a matrix device and method for determining the place and time of the gamma quanta interaction as well as the use of the device for determining the place and time of the gamma quanta interaction in positron emission tomography.

Abstract: The subject matters of the invention is a matrix device and method for determining the place and time of the gamma quanta interaction as well as the use of the device for determining the place and time of the gamma quanta interaction in positron emission tomography.

Abstract: The subject of the invention is a strip device and method for determining the place and time of the gamma quanta interaction as well as the use of the device for determining the place and time of the gamma quanta interaction in positron emission tomography.