G01T1/17

ULTRA-FAST SCANNING X-RAY IMAGING DEVICE
20220395240 · 2022-12-15 ·

Disclosed is a linear array ultra-fast scanning x-ray imaging device. The linear array x-ray imaging device is single photon sensitive, operating in frame output mode and including a pixel array Application Specific Integrated Circuit including the readout pixel array. The ASIC includes digital control logic and sufficient memory to accumulate digital output frames in various modes of operation prior to output from the ASIC, permitting advanced imaging functionalities directly on the ASIC, while maintaining a dynamic range of 16 bits and single photon sensitivity. The effective or secondary frames output from the pixel array ASIC can be tagged with user provided external triggers synchronizing the effective frames to the x-ray beam energy and/or to the movement of the x-ray source or imaged object. This enables dual energy imaging and ultra-fast scanning, without complex and costly conventional photon counting x-ray imaging sensors. The system architecture is simpler and higher performance.

Nuclear radiation monitoring apparatus and method
11520067 · 2022-12-06 · ·

A nuclear radiation monitoring apparatus comprising: communication circuitry configured to receive nuclear radiation data generated by a nuclear radiation detector, the nuclear radiation data being indicative of nuclear radiation emitted from each of a plurality of portions of an object and detected by the nuclear radiation detector; classification circuitry configured to classify the detected nuclear radiation using the nuclear radiation data; intensity determination circuitry configured to determine a value of an intensity parameter indicative of an intensity of the classified nuclear radiation for each portion of the object using the nuclear radiation data; visualisation data generation circuitry configured to generate visualisation data indicative of the classification of the classified nuclear radiation and, for each portion of the object, visualisation data indicative of the portion of the object and the determined intensity parameter value of the portion of the object; and display output circuitry configured to output the generated visualisation data for display.

Nuclear radiation monitoring apparatus and method
11520067 · 2022-12-06 · ·

A nuclear radiation monitoring apparatus comprising: communication circuitry configured to receive nuclear radiation data generated by a nuclear radiation detector, the nuclear radiation data being indicative of nuclear radiation emitted from each of a plurality of portions of an object and detected by the nuclear radiation detector; classification circuitry configured to classify the detected nuclear radiation using the nuclear radiation data; intensity determination circuitry configured to determine a value of an intensity parameter indicative of an intensity of the classified nuclear radiation for each portion of the object using the nuclear radiation data; visualisation data generation circuitry configured to generate visualisation data indicative of the classification of the classified nuclear radiation and, for each portion of the object, visualisation data indicative of the portion of the object and the determined intensity parameter value of the portion of the object; and display output circuitry configured to output the generated visualisation data for display.

Radiation image capturing apparatus
11520057 · 2022-12-06 · ·

A radiation image capturing apparatus includes a sensor substrate including a flexible base material and plural pixels that accumulate charges generated in accordance with radiation, a flexible first cable including one ends electrically connected to a connection region disposed at a predetermined side of the sensor substrate, a first circuit substrate electrically connected to the other end of the first cable and in which a first component used for processing a digital signal in a circuit unit driven in a case of reading out the charges in the plural pixels is mounted, a flexible second cable including one end electrically connected to a connection region disposed at a side different from the predetermined side, and a second circuit substrate electrically connected to the other end of the second cable and in which a second component used for processing an analog signal in the circuit unit is mounted.

Radiation image capturing apparatus
11520057 · 2022-12-06 · ·

A radiation image capturing apparatus includes a sensor substrate including a flexible base material and plural pixels that accumulate charges generated in accordance with radiation, a flexible first cable including one ends electrically connected to a connection region disposed at a predetermined side of the sensor substrate, a first circuit substrate electrically connected to the other end of the first cable and in which a first component used for processing a digital signal in a circuit unit driven in a case of reading out the charges in the plural pixels is mounted, a flexible second cable including one end electrically connected to a connection region disposed at a side different from the predetermined side, and a second circuit substrate electrically connected to the other end of the second cable and in which a second component used for processing an analog signal in the circuit unit is mounted.

DUAL MODE DETECTOR

A detector system which can be switched between single photon counting and charge integrating mode depending on the application, the photon flux and energy. Although the space for electronics in a pixel or strip detector system is very limited (as each channel is limited by the pixel size), the reconfiguration of the analog chain and the logic/counter in this smart way yields to have a detector system allowing both modes of operation and, therefore, effectively combining the characteristics of an Eiger® single photon counting system and a Jungfrau® charge integrating pixel detector system into one single detector. Depending on the application, the flux and the photon energy, the operator is enabled to switch between single photon counting and charge integrating mode of operation.

DUAL MODE DETECTOR

A detector system which can be switched between single photon counting and charge integrating mode depending on the application, the photon flux and energy. Although the space for electronics in a pixel or strip detector system is very limited (as each channel is limited by the pixel size), the reconfiguration of the analog chain and the logic/counter in this smart way yields to have a detector system allowing both modes of operation and, therefore, effectively combining the characteristics of an Eiger® single photon counting system and a Jungfrau® charge integrating pixel detector system into one single detector. Depending on the application, the flux and the photon energy, the operator is enabled to switch between single photon counting and charge integrating mode of operation.

Radiation imaging apparatus, radiation imaging system, method of controlling radiation imaging apparatus, and non-transitory computer-readable storage medium

A radiation imaging apparatus comprising a pixel array and a readout circuit is provided. The readout circuit includes an integrating amplifier configured to read out a signal from the pixel, a sample-and-hold circuit configured to sample an output from the integrating amplifier, and an A/D convertor configured to perform analog/digital conversion on an output from the sample-and-hold circuit and output the converted output. The apparatus performs first control and second control in parallel in an accumulation period for accumulating the signal in the pixel array. In the first control, the A/D convertor performs an analog/digital conversion operation, and in the second control, the integrating amplifier outputs a reference potential and the A/D convertor is electrically connected to a node configured to output the reference potential of the integrating amplifier.

Radiation imaging apparatus, radiation imaging system, method of controlling radiation imaging apparatus, and non-transitory computer-readable storage medium

A radiation imaging apparatus comprising a pixel array and a readout circuit is provided. The readout circuit includes an integrating amplifier configured to read out a signal from the pixel, a sample-and-hold circuit configured to sample an output from the integrating amplifier, and an A/D convertor configured to perform analog/digital conversion on an output from the sample-and-hold circuit and output the converted output. The apparatus performs first control and second control in parallel in an accumulation period for accumulating the signal in the pixel array. In the first control, the A/D convertor performs an analog/digital conversion operation, and in the second control, the integrating amplifier outputs a reference potential and the A/D convertor is electrically connected to a node configured to output the reference potential of the integrating amplifier.

MACHINE LEARNING-BASED SCINTILLATOR RESONSE MODELLING FOR INCREASED SPATIAL RESOLUTION IN NUCLEAR IMAGING
20230058112 · 2023-02-23 ·

A system (PP) and related methods for supporting nuclear imaging such as PET or other. The system comprises an input interface (IN) for receiving event data that represents an interaction event of gamma-radiation with a pixelated scintillator (SC) of a nuclear imaging apparatus (NIA). A pre-trained machine learning component (MLC) estimates a point spread function, PSF, for the said event. An output interface (OUT) outputs a representation of the PSF. The PSF may be used in emission image reconstruction for improved spatial resolution.