Abstract: A flat panel detector is provided having a circular active area. The flat panel detector is built using complementary metal-oxide-semiconductor (CMOS) tiles. In one implementation, the flat panel detector having a circular active area can be used as a replacement for a conventional image intensifier, including an image intensifier used in a fluoroscopy system.

Abstract: An X-ray detector panel includes a plurality of photodetector wafers are arranged in a photodetector array. Each photodetector wafer comprises a sensing surface, a contact surface disposed opposite the sensing surface, and an electrical contact coupled to the contact surface. A substrate is coupled to the photodetector array such that the photodetector array is substantially surrounded by the substrate and a face surface of the substrate is substantially coplanar with the sensing surface. A scintillator is coupled to the face surface of the substrate and substantially covers the sensing surfaces of the photodetector array. A scintillator cover is substantially sealingly coupled to the face surface.

Abstract: An X-ray imaging system includes a digital X-ray detector configured to acquire X-ray image data without communication from a source controller and to send the X-ray image data to a portable detector control device for processing and image preview. The source controller is configured to command X-ray emissions of X-rays from an X-ray radiation source for image exposures.

Abstract: The present approach relates to the fabrication of radiation detectors. In certain embodiments, additive manufacture techniques, such as 3D metallic printing techniques are employed to fabricate one or more parts of a detector. In an example of one such printing embodiment, amorphous silicon may be initially disposed onto a substrate and a laser may be employed to melt some or all of the amorphous silicon so as to form crystalline silicon circuitry of a light imager panel. Such printing techniques may also be employed to fabricate other aspects of a radiation detector, such as a scintillator layer.

Abstract: The present approach relates to the fabrication of radiation detectors. In certain embodiments, additive manufacture techniques, such as 3D metallic printing techniques are employed to fabricate one or more parts of a detector. In an example of one such printing embodiment, amorphous silicon may be initially disposed onto a substrate and a laser may be employed to melt some or all of the amorphous silicon so as to form crystalline silicon circuitry of a light imager panel. Such printing techniques may also be employed to fabricate other aspects of a radiation detector, such as a scintillator layer.

Abstract: An x-ray image detector includes a light image sensor having a depth, a front side comprising a sensing surface, and a back side. The x-ray image detector further includes a substrate plate on the back side and surrounding the depth of the light image sensor such that the substrate plate forms a lip around the light image sensor. The lip is level with the front side of the light image sensor. The x-ray image detector further includes a scintillator over the sensing surface of the light image sensor and at least a portion of the lip.

Abstract: A digital X-ray imaging system is provided. The digital X-ray imaging system includes an X-ray source and a digital X-ray detector. The digital X-ray detector includes a scintillator configured to absorb radiation emitted from the X-ray source and to emit optical photons in response to the absorbed radiation. The digital X-ray detector also includes multiple pixels, each pixel including a pinned photodiode and at least two charge-storage capacitors coupled to the pinned photodiode, wherein each pixel is configured to absorb the optical photons emitted by the scintillator and each pinned photodiode is configured to generate a photocharge in response to the absorbed optical photons. The digital X-ray detector further includes control circuitry coupled to each pixel of the multiple pixels and configured to selectively control a respective flow of the photocharge generated by the pinned photodiode to a respective charge-storage capacitor of the at least two charge-storage capacitors during integration.

Abstract: An imaging system includes an analog-to-digital converter configured to convert an analog pixel value into a first digital pixel value. The imaging system also includes an index value source configured to receive the first digital pixel value from the analog-to-digital converter and to generate a digital index value based on a comparison of the first digital pixel value to a digital reference value. In addition, the imaging system includes a transmitter in communication with the index value source and configured to transmit the digital index value. Further, the imaging system includes an image processing component configured to receive the digital index value and to generate a second digital pixel value based at least in part on the received digital index value and a lookup table of the image processing component.

Abstract: An imaging system includes an analog-to-digital converter configured to convert an analog pixel value into a first digital pixel value. The imaging system also includes an index value source configured to receive the first digital pixel value from the analog-to-digital converter and to generate a digital index value based on a comparison of the first digital pixel value to a digital reference value. In addition, the imaging system includes a transmitter in communication with the index value source and configured to transmit the digital index value. Further, the imaging system includes an image processing component configured to receive the digital index value and to generate a second digital pixel value based at least in part on the received digital index value and a lookup table of the image processing component.

Abstract: The present disclosure presents systems and methods for correcting image artifacts on an x-ray image. X-ray images are obtained and processed with a correction algorithm that generates corrected pixel lines having pixels with corrected pixel values. The corrected pixel lines can then be processed with a filtering algorithm that generates filtered pixel line having pixels with a filtered pixel value. The bad pixel lines are replaced by the filtered pixel lines to generate corrected x-ray images.

Abstract: An X-ray detector includes a light sensor configured to receive light energy from a scintillator receiving X-rays. The light sensor includes a grid of pixels having a light reception surface oriented toward the scintillator and configured to receive light from the scintillator. Each pixel includes a diode assembly, a control assembly and a capacitor assembly. The diode assembly is disposed on the light reception surface and is configured to produce electric charge responsive to light received by the diode assembly. The diode assembly includes plural diodes selectably configurable in plural combinations, wherein an amount of the electric charge produced by the diode assembly varies based on a selection of diode combination. The control assembly is operably connected to the diode assembly and configured to selectably configure the diodes. The capacitor assembly is operably connected to the diode assembly and configured to receive and store the electric charge from the diode assembly.

Abstract: Systems and methods for generating an X-ray image using a digital flat panel detector with a squircle shape are described. The flat panel X-ray detector contains a circuit board, a light imager electrically connected to the circuit board, and a scintillator coupled on the light imager. The detector has superellipse shape or a cornerless shape with a first substantially straight edge and a second substantially straight edge running substantially perpendicular to the first edge, wherein the first and second edges do not physically intersect with each other at 90 degrees. The flat panel detector with this shape can be used in an x-ray imaging system that uses the detector to detect x-rays and produce an x-ray image. With this shape, the active sensing area of the detector can be similar to those currently available with rectangular or square flat panel detectors, while using less material to create the detector.

Abstract: An imaging system includes a detector configured to detect X-rays from an X-ray source. The detector includes multiple photodetector elements. The imaging system also includes an anti-scatter grid disposed over the detector, wherein the anti-scatter grid includes multiple radiation absorbing elements. At least a portion of one or more of the radiation absorbing elements of the multiple radiation absorbing elements is disposed on each photodetector element, and a total area of each respective portion of the one or more radiation absorbing elements disposed on each photodetector element is substantially equal.

Abstract: An X-ray detector panel includes a plurality of photodetector wafers are arranged in a photodetector array. Each photodetector wafer comprises a sensing surface, a contact surface disposed opposite the sensing surface, and an electrical contact coupled to the contact surface. A substrate is coupled to the photodetector array such that the photodetector array is substantially surrounded by the substrate and a face surface of the substrate is substantially coplanar with the sensing surface. A scintillator is coupled to the face surface of the substrate and substantially covers the sensing surfaces of the photodetector array. A scintillator cover is substantially sealingly coupled to the face surface.

Abstract: This disclosure presents systems and methods that synchronize an x-ray imaging system with the heartbeat of a patient. A patient's heartbeat is sensed with a cardiac monitoring unit, and a processing unit generates x-ray pulses that are synchronized with the patient's heartbeat. Based on the real-time heartbeat information, an x-ray imaging device can be operated to obtain x-ray images at various states of the cardiac cycle. The x-ray images taken over several cardiac cycles can be combined based on the relative state of the cardiac cycle in which the images were obtained to achieve high temporal resolution of a cardiac cycle. Additionally, x-ray images obtained at common relative states of the cardiac cycle can be combined to provide higher quality cardiac image or images.

Abstract: A portable detector for use with an imaging system is disclosed. The portable detector automatically sets one or more operational states based on at least a determination as to whether the portable detector is connected to external power. An imaging system is also disclosed that ascertains whether the portable detector is connected via a tether. The imaging system may perform a compatibility check when connected to the portable detector to assess compatibility between the imaging system and the portable detector.

Abstract: In accordance with one embodiment, a digital X-ray detector is provided. The detector includes a scintillator layer configured to absorb radiation emitted from a radiation source and to emit optical photons in response to the absorbed radiation. The detector also includes a complementary metal-oxide-semiconductor (CMOS) light imager that is configured to absorb the optical photons emitted by the scintillator layer. The CMOS light imager includes a first surface and a second surface, and the first surface is disposed opposite the second surface. The scintillator layer contacts the first surface of the CMOS light imager.

Abstract: Systems and methods for obtaining and displaying an X-ray image are described. The X-ray system contains an X-ray source, a CMOS based X-ray detector containing an active area for detecting an X-ray beam from the X-ray source, the active area containing an array of physical detector pixels having a pixel size or dimension ranging from about 10 ?m×10 ?m to about 50 ?m×50 ?m, a collimator defining an aperture, wherein the collimator is configured for a user to center the aperture over any portion of the active area of the CMOS based X-ray detector, and a display device configured to receive and display an X-ray image containing an array of virtual image pixels that have been previously binned at the CMOS based X-ray detector. Other embodiments are described.

Abstract: The present disclosure presents systems and methods for correcting image artifacts on an x-ray image. X-ray images are obtained and processed with a correction algorithm that generates corrected pixel lines having pixels with corrected pixel values. The corrected pixel lines can then be processed with a filtering algorithm that generates filtered pixel line having pixels with a filtered pixel value. The bad pixel lines are replaced by the filtered pixel lines to generate corrected x-ray images.

Abstract: This disclosure presents systems and methods that synchronize an x-ray imaging system with the heartbeat of a patient. A patient's heartbeat is sensed with a cardiac monitoring unit, and a processing unit generates x-ray pulses that are synchronized with the patient's heartbeat. Based on the real-time heartbeat information, an x-ray imaging device can be operated to obtain x-ray images at various states of the cardiac cycle. The x-ray images taken over several cardiac cycles can be combined based on the relative state of the cardiac cycle in which the images were obtained to achieve high temporal resolution of a cardiac cycle. Additionally, x-ray images obtained at common relative states of the cardiac cycle can be combined to provide higher quality cardiac image or images.