公开(公告)号：US20210121143A1

公开(公告)日：2021-04-29

申请号：US17019750

申请日：2020-09-14

Applicant: REDLEN TECHNOLOGIES, INC.

Inventor： Krzysztof INIEWSKI ,  Elmaddin GULIYEV ,  Conny HANSSON

IPC: A61B6/00 ,  G01N23/046

Abstract: Various aspects include methods for use in X-ray detectors for adjusting count measurements from pixel detectors within a pixelated detector module to correct for the effects of pileup events that occur when more than one photon is absorbed in a pixel detector during a deadtime of the detector system. In various embodiments, count measurements may be obtained at two different X-ray tube currents, from which the detector system deadtime may be calculated based on the two count measurements and a ratio of the two X-ray tube currents. Using the calculated deadtime, a pileup correction factor may be determined appropriate for the behavior of the detector system in response to pileup events. The pileup correction factor may be applied to pixel detector count values after the counts have been corrected for pixel-to-pixel differences using a flat field correction.

公开(公告)号：US20210063589A1

公开(公告)日：2021-03-04

申请号：US16998676

申请日：2020-08-20

Applicant: REDLEN TECHNOLOGIES, INC.

Inventor： Krzysztof INIEWSKI ,  Saeid TAHERION ,  Conny HANSSON ,  Robert CRESTANI ,  Glenn BINDLEY

IPC: G01T7/00 ,  G01T1/24

Abstract: Various aspects include methods of compensating for issues caused by charge sharing between pixels in pixel radiation detectors. Various aspects may include measuring radiation energy spectra with circuitry capable of registering detection events occurring simultaneous or coincident in two or more pixels, adjusting energy measurements of simultaneous-multi-pixel detection events by a charge sharing correction factor, and determining a corrected energy spectrum by adding the adjusted energy measurements of simultaneous-multi-pixel detection events to energy spectra of detection events occurring in single pixels. Adjusting energy measurements of simultaneous-multi-pixel detection events may include multiplying measured energies of simultaneous-multi-pixel detection events by a factor of one plus the charge sharing correction factor.

公开(公告)号：US20210022695A1

公开(公告)日：2021-01-28

申请号：US16931800

申请日：2020-07-17

Applicant: REDLEN TECHNOLOGIES, INC.

Inventor： Krzysztof INIEWSKI ,  Elmaddin GULIYEV ,  Conny HANSSON

IPC: A61B6/00 ,  A61B6/03

Abstract: Various aspects include methods for compensating for the effects of charge sharing among pixelate detectors in X-ray detectors by applying a correspondence factor to counts of X-ray photons in energy bins to estimate incident X-ray photon energy bins. The correspondence factor may be determined by determining an incident X-ray photon energy spectrum, adjusting the incident X-ray photon energy spectrum to account for an energy resolution of the pixelated detector, generating a charge sharing model for the adjusted incident X-ray photon energy spectrum based on a percentage charge sharing parameter of the pixelated detector, applying the charge sharing model to energy bins of the pixelated detector to estimate counts in each of the energy bins, and determining the correspondence factor by comparing the estimated counts in each of the energy bins to counts in the energy bins that would be expected for the adjusting the incident X-ray photon energy spectrum.

公开(公告)号：US20200326290A1

公开(公告)日：2020-10-15

申请号：US16844484

申请日：2020-04-09

Applicant: REDLEN TECHNOLOGIES, INC.

Inventor： Krzysztof INIEWSKI ,  Michael AYUKAWA ,  Conny HANSSON

IPC: G01N23/20008 ,  G01N23/207

Abstract: Various aspects include methods and devices for reducing the scanning time for an X-ray diffraction scanner system by increasing the count rate or efficiency of the energy discriminating X-ray detector. In a first embodiment, the count rate of the energy discriminating X-ray detector is increased by increasing the number of detectors counting X-ray scatter photon in particular energy bins by configuring individual pixel detectors within a 2-D X-ray detector array to count photons within specific energy bins. In a second embodiment, the gain of amplifier components in the detector processing circuitry is increased in order to increase the energy resolution of the detector. In a third embodiment, the individual pixel detectors within a 2-D X-ray detector array are configured to count photons within specific energy bins and the gain of amplifier components in the detector processing circuitry is increased in order to increase the energy resolution of the detector.

公开(公告)号：US20200150297A1

公开(公告)日：2020-05-14

申请号：US16185963

申请日：2018-11-09

Applicant: REDLEN TECHNOLOGIES, INC.

Inventor： Krzysztof INIEWSKI ,  Conny HANSSON ,  Robert CRESTANI ,  Glenn BINDLEY

IPC: G01T7/00 ,  G01T1/208

Abstract: Various aspects include methods of compensating for issues caused by charge sharing between pixels in pixel radiation detectors. Various aspects may include measuring radiation energy spectra with circuitry capable of registering detection events occurring simultaneous or coincident in two or more pixels, adjusting energy measurements of simultaneous-multi-pixel detection events by a charge sharing correction factor, and determining a corrected energy spectrum by adding the adjusted energy measurements of simultaneous-multi-pixel detection events to energy spectra of detection events occurring in single pixels. Adjusting energy measurements of simultaneous-multi-pixel detection events may include multiplying measured energies of simultaneous-multi-pixel detection events by a factor of one plus the charge sharing correction factor.