A planar radiographic imaging device has electromagnetic radiation sensitive elements disposed in a two-dimensional array. A housing encloses the two-dimensional array of radiation sensitive elements and includes a layer of aligned carbon nanotubes on a surface thereof.

An imaging apparatus includes an image sensor configured to convert an incident electromagnetic wave into current; a current/voltage conversion circuit that is configured to convert the current input from the image sensor into voltage and includes an operational amplifier configured to output voltage corresponding to the current input from the image sensor; and a sampling circuit that is configured to sample output of the operation amplifier and is provided between input/output terminals of the operational amplifier.

A photoelectric conversion panel accumulates charge in a capacitive element during a period in which a photodiode is irradiated by light, by conducting electricity to a first transistor in a state in which a second transistor is interrupted and also in which a third transistor is interrupted, reads the charge accumulated in the capacitive element during a read period, by conducting electricity to the second transistor in a state in which the first transistor is interrupted, and continuously resets the photodiode during a period other than the period in which the photodiode is irradiated by light, by conducting electricity to the third transistor in a state in which the first transistor is interrupted.

A radiation detector uses a direct conversion layer (30) with first and second readout sensors (20, 24) located on opposite sides of the direct conversion layer (30). A biasing arrangement provides a voltage bias across the direct conversion layer (30) using pixel electrodes (22, 26) of the first and second readout sensors. The use of a direct conversion layer (30) gives an intrinsic high spatial resolution and enables X-ray photon counting. Two independent readout sensors (e.g. with different technologies and related back-end electronics) are thereby combined in one detector without compromising their functionality. The detector can be made at low cost, by virtue of the use of a single direct conversion layer (30) which is coupled on both sides to multiple readout sensors.

A flexible CT detector and a static CT system using same. The flexible CT detector comprises: a flexible circuit board (1), which is used for being attached onto the inner side of a CT rack (10) and has a signal reading portion; and a flexible conversion portion (2), which is attached onto the inner side of the flexible circuit board (1) and is used for absorbing an X-ray and converting same into a set signal, wherein the signal reading portion is used for receiving the set signal and outputting continuous and uninterrupted projection images. In the flexible CT detector, a large-area flexible circuit is used as a substrate of the detector, such that pixels of the whole ring of the detector are arranged closely, and the problems of splicing seams and projection information loss that are caused by the assembly of a traditional rigid detector are greatly reduced.

A photosensitive circuit structure and an optical device, where the photosensitive circuit structure includes a photosensitive unit, a signal amplification unit and a control unit; the photosensitive unit includes a photodiode and a reset transistor, the signal amplification unit includes an amplification transistor, and the control unit includes a control transistor; an input terminal, an output terminal and a control terminal of the reset transistor are electrically connected to a power supply terminal, a control terminal of the amplification transistor and a reset signal terminal, respectively; an input terminal and output terminal of the amplification transistor are electrically connected to the power supply terminal and an input terminal of the control transistor respectively, and a control terminal of the control transistor is connected to a signal control terminal.

The embodiments of the present disclosure provide detector systems and imaging devices. The system may include a first photosensor array, a second photosensor array and a readout module. A position of the first photosensor array may be opposite to a position of the second photosensor array. Configurations of the first photosensor array and the second photosensor array may be the same. The first photosensor array and the second photosensor array may be configured to output electrical signals related to radiated photons, respectively. The readout module may include a first readout unit and a second readout unit. Configurations of the first readout unit and the second readout unit may be the same. The first readout unit and the second readout unit may be configured to process the electrical signals.

This radiation detector comprises: a detector panel; a front and a rear protection panel disposed on either side of the detector panel; and a support member supporting the detector panel and the front and rear protection panels. The detector panel and the front and rear protection panels are configured so as to be able to bend together in two directions.

The present invention relates to a photon counting detector comprising a scintillator (10, 20) configured to convert incident gamma radiation into optical photons; a pixelated photodetector (11, 22) configured to detect the flux of optical photons wherein the pixelated photodetector (22) is a silicon photomultiplier, SiPM, detector, wherein each photodetector pixel comprises an array of silicon avalanche photo diodes, SPADs; and circuitry (80, 90) configured to heat SPADs by applying, if dark count rate of a SPAD exceeded a dark count rate threshold, an elevated reverse bias voltage to the SPAD to force the SPAD into breakdown with current flowing through the SPAD for the time of a heating period to locally increase the temperature of the SPAD, and controlling the length of the heating period.

This X-ray detector which detects an X-ray and generates a corresponding output signal comprises: a TFT array including a plurality of pixel TFT circuits each generating the output signal according to the intensity of the detected X-ray; a gate circuit configured to apply, to the TFT array, a gate signal for driving the plurality of pixel TFT circuits; and a readout circuit configured to receive the output signal generated by each of the plurality of pixel TFT circuits and transmit the output signal to the outside. The gate circuit comprises: a gate chip-on film configured to generate the gate signal and apply the gate signal to the TFT array; and a gate connection FPCB circuity connected to the gate chip-on film so as to receive a driving signal for generating the gate signal and transmit the driving signal to the gate chip-on film.