Abstract:
An X-ray imaging system including an X-ray source, an X-ray collimator, a real-time controllable 3D X-ray attenuator, a digital X-ray detector, and a system controller coupled to the X-ray radiation source, the collimator, the real-time controllable 3D X-ray attenuator, and the digital X-ray detector for controlling the real-time controllable 3D X-ray attenuator to reduce X-ray radiation dose and improve image quality. The real-time controllable 3D X-ray attenuator includes a top panel, a bottom panel, at least one sidewall joining the top panel to the bottom panel, an open area between the top panel, bottom panel, and at least one 2D pixel array coupled to at least one of the top panel and the bottom panel, the at least one 2D pixel array having a plurality of pixels of thin film electric coils and switching thin film field-effect transistors, wherein the open area is at least partially filled with a mixture of ferromagnetic material and medium X-ray attenuation material.
Abstract:
An X-ray detector assembly comprising a scintillator, a photo detector with a sensing surface, and a light attenuator that has a controllable light transmission rate and is located between the scintillator and the sensing surface of the photo detector.
Abstract:
An X-ray imaging system including an X-ray source, an X-ray collimator, a real-time controllable 3D X-ray attenuator, a digital X-ray detector, and a system controller coupled to the X-ray radiation source, the collimator, the real-time controllable 3D X-ray attenuator, and the digital X-ray detector for controlling the real-time controllable 3D X-ray attenuator to reduce X-ray radiation dose and improve image quality. The real-time controllable 3D X-ray attenuator includes a top panel, a bottom panel, at least one sidewall joining the top panel to the bottom panel, an open area between the top panel, bottom panel, and at least one 2D pixel array coupled to at least one of the top panel and the bottom panel, the at least one 2D pixel array having a plurality of pixels of thin film electric coils and switching thin film field-effect transistors, wherein the open area is at least partially filled with a mixture of ferromagnetic material and medium X-ray attenuation material.
Abstract:
A digital X-ray detector includes a scintillator that is configured to absorb radiation emitted from an X-ray radiation source and to emit light 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 light photons emitted by the scintillator. The CMOS light imager includes a first surface and a second surface. The first surface is disposed opposite the second surface. The scintillator contacts the first surface of the CMOS light imager. The CMOS light imager further includes a CMOS pixel array with an array of CMOS pixels. Each individual CMOS pixel includes at least two row select transistors.
Abstract:
A digital X-ray detector includes a scintillator that is configured to absorb radiation emitted from an X-ray radiation source and to emit light 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 light photons emitted by the scintillator. The CMOS light imager includes a first surface and a second surface. The first surface is disposed opposite the second surface. The scintillator contacts the first surface of the CMOS light imager. The CMOS light imager further includes a repaired CMOS pixel array with at least one defective CMOS pixel isolated from a common column data line, a row select scan line, or a rest line within the CMOS pixel array.
Abstract:
An imager panel for an x-ray detector for obtaining x-ray images of an object is provided that includes a first portion disposed at the center of the hybrid imager panel that can produce images of a first resolution and a second portion disposed at least partially around the first portion that is capable of producing images of a second resolution. The hybrid imager panel provides a hybrid detector that can be selectively operated to obtain images of varying resolutions corresponding to the first resolution from the first portion, the second resolution from the second portion or a combination thereof.
Abstract:
An X-ray detector assembly comprising a light attenuator of electro-chromic material, the electro-chromic material having a first electrode layer electrically coupled to a first surface of the electro-chromic material and a second electrode layer electrically coupled to a second surface of the electro-chromic material, wherein the second surface is disposed opposite the first surface, and the light attenuator having a controllable light transmission rate. The X-ray detector further comprising a scintillator deposited on the first electrode layer and a photo detector deposited on the second electrode layer. The photo detector having a sensing surface adjacent to the second electrode layer of the light attenuator. A variable power supply is electrically coupled to the first and second electrode layers of the light attenuator to provide a controllable voltage across the first and second electrode layers to control the light transmission rate of the light attenuator in real time.
Abstract:
An imager panel for an x-ray detector for obtaining x-ray images of an object is provided that includes a first portion disposed at the center of the hybrid imager panel that can produce images of a first resolution and a second portion disposed at least partially around the first portion that is capable of producing images of a second resolution. The hybrid imager panel provides a hybrid detector that can be selectively operated to obtain images of varying resolutions corresponding to the first resolution from the first portion, the second resolution from the second portion or a combination thereof.
Abstract:
An X-ray imaging system including an X-ray source, a motorless real-time controllable 3D X-ray collimator, a digital X-ray detector, and a system controller coupled to the X-ray radiation source, the motorless real-time controllable 3D X-ray collimator, and the digital X-ray detector for controlling the motorless real-time 3D X-ray collimator to reduce X-ray radiation dose and improve image quality. The motorless real-time controllable 3D X-ray collimator includes a top panel, a bottom panel, at least one sidewall joining the top panel to the bottom panel, an open area between the top panel, bottom panel, and at least one 2D pixel array coupled to at least one of the top panel and the bottom panel, the at least one 2D pixel array having a plurality of pixels of thin film electric coils and switching thin film field-effect transistors, wherein the open area is at least partially filled with a mixture of ferromagnetic material and high X-ray attenuation material.
Abstract:
An X-ray imaging system including an X-ray source, a motorless real-time controllable 3D X-ray collimator, a digital X-ray detector, and a system controller coupled to the X-ray radiation source, the motorless real-time controllable 3D X-ray collimator, and the digital X-ray detector for controlling the motorless real-time 3D X-ray collimator to reduce X-ray radiation dose and improve image quality. The motorless real-time controllable 3D X-ray collimator includes a top panel, a bottom panel, at least one sidewall joining the top panel to the bottom panel, an open area between the top panel, bottom panel, and at least one 2D pixel array coupled to at least one of the top panel and the bottom panel, the at least one 2D pixel array having a plurality of pixels of thin film electric coils and switching thin film field-effect transistors, wherein the open area is at least partially filled with a mixture of ferromagnetic material and high X-ray attenuation material.