The present disclosure relates to a method for scanning a patient in an imaging system. The imaging system may include one or more cameras directed at the patient. The method may include obtaining a position of each of the camera(s) relative to the imaging system. The method may also include obtain image data of the patient captured by the camera(s), wherein the image data may correspond to a first view with respect to the patient. The method may further include generating projection image data of the patient based on the image data and the position of each of the camera(s) relative to the imaging system, wherein the projection image data may correspond to a second view with respect to the patient different from the first view. The method may further include generating control information for scanning the patient based on the projection image data of the patient.

A radiographic imaging device includes: a radiation detector including plural pixels, each including a sensor portion and a switching element; a detection unit that detects a radiation irradiation start if an electrical signal caused by charges generated in the sensor portion satisfies a specific irradiation detection condition, and/or if an electrical signal caused by charges generated in a radiation sensor portion that is different from the sensor portion satisfies a specific irradiation detection condition; and a control unit that determines whether or not noise caused by external disturbance has occurred after the detection unit has detected the radiation irradiation start, and if the noise has occurred, that stops a current operation of the radiation detector, and causes the detection unit to perform detection.

A radiographic imaging device includes: a radiation detector including plural pixels, each including a sensor portion and a switching element; a detection unit that detects a radiation irradiation start if an electrical signal caused by charges generated in the sensor portion satisfies a specific irradiation detection condition, and/or if an electrical signal caused by charges generated in a radiation sensor portion that is different from the sensor portion satisfies a specific irradiation detection condition; and a control unit that determines whether or not noise caused by external disturbance has occurred after the detection unit has detected the radiation irradiation start, and if the noise has occurred, that stops a current operation of the radiation detector, and causes the detection unit to perform detection.

The invention relates to medical imaging and, more specifically, to intraoral dental radiology. The sensor according to the invention includes a series (SPHx) of detection photodiodes for detecting the arrival of an X-ray flash. The series of photodiodes occupies the location of a central column of the matrix of pixels. The signal of the missing pixel in each row can be reconstructed by interpolating the signals provided by the adjacent pixels of the row. The detection photodiodes are identical to the photodiodes of the active CMOS pixels. They are all electrically connected on one side to a reference potential and on the other side to a detection conductor (CD) extending along the series of photodiodes. This detection conductor is connected to a detection circuit (DX) delivering a signal for triggering the capture of an image when the detected current or the variation in this current exceeds a threshold showing that an X-ray flash has been initiated.

A radiography system comprising a radiography device and a power supply device is provided. The radiography device includes a sensor unit for obtaining a radiographic image and is capable of non-contact power reception, and the power supply device is capable of non-contact power supply to the radiography device. In a period in which a fluctuation in a power supply frequency of the power supply from the power supply device to the radiography device affects a signal obtained by the radiography device from the sensor unit, the power supply device supplies power to the radiography device at a constant power supply frequency.

A radiation detector includes control and data lines extending respectively in mutually-orthogonal first and second directions, photoelectric conversion parts respectively in regions defined by the control and data lines, noise detecting parts outside a region including the photoelectric conversion parts, a control circuit inputting control signals to first and second thin film transistors located respectively in the photoelectric conversion and noise detecting parts, a signal detection circuit reading image data and noise signals respectively from the photoelectric conversion and noise detecting parts, and an image configuration circuit configuring a radiation image based on the signals that are read. The signals from the photoelectric conversion parts adjacent to the noise detecting parts are not read and/or are not used by the image configuration circuit when configuring the radiation image, and/or the photoelectric conversion parts adjacent to the noise detecting parts are not electrically connected with the control and/or signal detection circuits.

A radiation imaging apparatus includes a pixel array having pixels including conversion elements and switching elements, a bias line for supplying a bias potential to the conversion elements; driving lines for supplying a signal to control the switching elements, a driving unit for performing an initialization operation of supplying a driving signal to each driving line group, switching each driving signal from an OFF voltage to an ON voltage, and then returning the driving signal to the OFF voltage; an acquisition unit configured to acquire a plurality of times in each driving cycle a signal value representing a current flowing through the bias line; a calculation unit configured to calculate radiation information based on the signal values; and a determination unit configured to determine whether irradiation of the pixel array with radiation is present based on the radiation information.

A radiation imaging apparatus includes a pixel array having pixels including conversion elements and switching elements, a bias line for supplying a bias potential to the conversion elements; driving lines for supplying a signal to control the switching elements, a driving unit for performing an initialization operation of supplying a driving signal to each driving line group, switching each driving signal from an OFF voltage to an ON voltage, and then returning the driving signal to the OFF voltage; an acquisition unit configured to acquire a plurality of times in each driving cycle a signal value representing a current flowing through the bias line; a calculation unit configured to calculate radiation information based on the signal values; and a determination unit configured to determine whether irradiation of the pixel array with radiation is present based on the radiation information.

Some embodiments of the present disclosure provide a method that includes colliding a laser with an electron beam to produce backscattered x-rays while the electron beam is traversing a circular arc. This backscattering process is inverse Compton scattering (ICS). ICS x-rays are emitted in the same direction as the electrons. Because this ICS direction is changing as a function of time, the position of the x-ray beam on a detector will change depending on the timing of electron/laser collision. This position change is easily detected and converted to a timing measurement sensitive at the femtosecond scale, converting a very difficult timing measurement of laser pulse, electron pulse, and x-ray pulse synchronization into a simple and robust position measurement.

The present application discloses a pixel circuit of a photo detector panel. The pixel circuit includes a reset sub-circuit for resetting voltages at a first node and a second node, a photoelectric-conversion sub-circuit coupled to the first node and configured to convert an optical signal to a first voltage at the first node, a compensation sub-circuit coupled between the first node and the second node and configured to store the first voltage and determine a second voltage at the second node. The pixel circuit further includes an integration sub-circuit coupled to the first node and to determine a third voltage at the second node to be applied to a gate of a driving transistor to generate a current flowing from an input port provided with a bias voltage to an output port. The current is substantially independent from a threshold voltage of the driving transistor and the bias voltage.