Abstract:
A system is provided. The system includes a portable digital X-ray detector and a portable detector control device configured to communicate with the digital X-ray detector. The system also includes a coupling mechanism configured to couple the portable digital X-ray detector to the portable digital X-ray detector to enable simultaneous transport of the digital X-ray detector and the detector control device. The coupling mechanism does not communicate with any component of an imaging system including the portable digital X-ray detector and portable detector control device.
Abstract:
Methods and systems are provided for controlling an x-ray imaging system. In one embodiment, a method for an x-ray imaging system, includes acquiring, with the x-ray imaging system, a plurality of images as an x-ray tube current of the x-ray imaging system is ramping from a predefined x-ray tube current to an updated x-ray tube current, the updated x-ray tube current determined based on an estimated patient thickness estimated from a prior image acquired with the x-ray imaging system while the x-ray tube current is at the predefined x-ray tube current, combining the plurality of images into a final image, and outputting the final image for display via a display device.
Abstract:
Methods and systems are provided for generating regional digital subtraction angiography (DSA) images and roadmap images with landmarks. In one embodiment, a method comprises generating a mask from a set of mask images of an anatomy of a subject, and generating a masked image by applying the mask to acquired image data of the anatomy of the subject, including weighting the mask differently inside a region of interest (ROI) of the image than outside the ROI, the weighting inside ROI independent of the weighting outside the ROI. In this way, a user may be able to adjust a relative magnitude of subtraction inside and outside the ROI, and thus be able to visualize both vasculature and landmarks within the same image frame.
Abstract:
Methods and systems are provided for generating regional digital subtraction angiography (DSA) images and roadmap images with landmarks. In one embodiment, a method comprises generating a mask from a set of mask images of an anatomy of a subject, and generating a masked image by applying the mask to acquired image data of the anatomy of the subject, including weighting the mask differently inside a region of interest (ROI) of the image than outside the ROI, the weighting inside ROI independent of the weighting outside the ROI. In this way, a user may be able to adjust a relative magnitude of subtraction inside and outside the ROI, and thus be able to visualize both vasculature and landmarks within the same image frame.
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:
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 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 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.