Abstract: Systems, devices, and methods for automatic tuning, calibration, and verification of radiation therapy systems based on images obtained using electronic portal imaging devices (EPIDs).

Abstract: The claimed subject matter describes a novel technique to measure the beam profile using an area detector. In one embodiment, a set of one-dimensional beam profile measurements is performed by taking two images under the same source conditions but at two different positions of the detector, with each position of the detector shifted by a certain distance in the direction corresponding to the direction of the one-dimensional profile measurement. In further embodiments, a set of two-dimensional beam profile measurements is achieved by determining a second set of one-dimensional profiles from the same sampling points in a second direction and building a two-dimensional map of the beam profile by correlating the first one-dimensional profile measurement with the second one-dimensional profile measurement.

Abstract: An x-ray imaging device may include a detector array and an x-ray converting layer coupled to the detector array. The detector array and the x-ray converting layer may be configured such that x-rays traverse the detector array before propagating in the x-ray converting layer. The x-ray imaging device may also include a buildup layer behind the x-ray converting layer. The x-ray imaging device may be used as a “universal” imager for both MV and kV imaging.

Abstract: Circuitry and method for collecting image array data in which pixels are addressed and dynamically clamped separately. In accordance with one embodiment, pixels are addressed and clamped during different time intervals, thereby allowing faster pixel data readout while still allowing sufficient time to remove all pixel charges.

Abstract: Circuitry and method for collecting image array data in which pixels are addressed and dynamically clamped separately. In accordance with one embodiment, pixels are addressed and clamped during different time intervals, thereby allowing faster pixel data readout while still allowing sufficient time to remove all pixel charges.

Abstract: An image acquisition device employs a low-Z material to maximize the probability of backscattering or direct hits in Compton scattering for radiation with a given energy spectrum that passes through a detector array to enhance the contrast and spatial resolution of the image acquisition device. A radiation apparatus including the image acquisition device is also provided.

Abstract: A multi-layered mega-voltage digital imager is disclosed. In one embodiment, the radiation to particle conversion and particle to electricity conversion is paired as a modular entity. The entity is replicated on top of each other as a layered unit to build an imager with increased resolution and efficiency. Due to this paired replication, sub-images from each replicated pair may be selectively combined and processed to enhance the quality of the image. By varying and adding components at each layer, a different dose rate, and increased resolution, energy sensitivity and efficiency are achieved. The multilayered approach is cost effective and removes problems associated with traditional high efficient MV imagers used for high energy radiations.

Abstract: An image acquisition device employs a low-Z material to maximize the probability of backscattering or direct hits in Compton scattering for radiation with a given energy spectrum that passes through a detector array to enhance the contrast and spatial resolution of the image acquisition device. A radiation apparatus including the image acquisition device is also provided.

Abstract: A multi-layered mega-voltage digital imager is disclosed. In one embodiment, the radiation to particle conversion and particle to electricity conversion is paired as a modular entity. The entity is replicated on top of each other as a layered unit to build an imager with increased resolution and efficiency. Due to this paired replication, sub-images from each replicated pair may be selectively combined and processed to enhance the quality of the image. By varying and adding components at each layer, a different dose rate, and increased resolution, energy sensitivity and efficiency are achieved. The multilayered approach is cost effective and removes problems associated with traditional high efficient MV imagers used for high energy radiations.

Abstract: The claimed subject matter describes a novel technique to measure the beam profile using an area detector. In one embodiment, a set of one-dimensional beam profile measurements is performed by taking two images under the same source conditions but at two different positions of the detector, with each position of the detector shifted by a certain distance in the direction corresponding to the direction of the one-dimensional profile measurement. In further embodiments, a set of two-dimensional beam profile measurements is achieved by determining a second set of one-dimensional profiles from the same sampling points in a second direction and building a two-dimensional map of the beam profile by correlating the first one-dimensional profile measurement with the second one-dimensional profile measurement.

Abstract: A medical system includes a treatment radiation source configured to deliver treatment radiation during a treatment session, an imaging system configured to obtain image data during the treatment session, and a processor configured to determine a beam break, and automatically operate the imaging system to obtain the image data during the beam break. A medical system includes a treatment radiation source, an imaging system configured to automatically obtain image data in a beam break that occurs during a treatment session, and a processor configured to automatically operate the treatment radiation source to deliver treatment radiation during the treatment session after the beam break ends.

Abstract: A medical system includes a treatment radiation source configured to deliver treatment radiation during a treatment session, an imaging system configured to obtain image data during the treatment session, and a processor configured to determine a beam break, and automatically operate the imaging system to obtain the image data during the beam break. A medical system includes a treatment radiation source, an imaging system configured to automatically obtain image data in a beam break that occurs during a treatment session, and a processor configured to automatically operate the treatment radiation source to deliver treatment radiation during the treatment session after the beam break ends.

Abstract: A method for determining parameters of a beam is disclosed. As a part of a disclosed method, a beam is received at an image detection array where charges are generated and collected, at a plurality of pixels. Values associated with at least one of a plurality of parameters of the beam are determined by integrating information supplied from each of the pixels. Feedback is generated that represents the values.

Abstract: A dual pulse imaging method is provided comprising the steps of generating a first image of a region of interest by a first pulse delivering a first dose, generating a second image of the region of interest by a second pulse delivering a second dose different from the first dose, and computing a third image of the region of interest using data from the first and second images. A threshold can be identified for determining data from the first and second images to be used in computing the third image. A dual pulse imaging system is also provided.

Abstract: A dual pulse imaging method is provided comprising the steps of generating a first image of a region of interest by a first pulse delivering a first dose, generating a second image of the region of interest by a second pulse delivering a second dose different from the first dose, and computing a third image of the region of interest using data from the first and second images. A threshold can be identified for determining data from the first and second images to be used in computing the third image. A dual pulse imaging system is also provided.

Abstract: A method for processing data in a radiation procedure includes obtaining operation data, and formatting the operation data into a set of image data, wherein the operation data comprises one or a combination of a gantry angle, a patient position, a patient orientation, radiation dose rate, radiation dose fraction, beam pulse rate, beam energy, time when beam was activated, time when beam was deactivated, and beam variation (if any) during an image readout. Also machine axis information, machine status info and operation data from other systems like for instance the RPM system may be included. A method of processing data in a radiation procedure includes obtaining operation data, obtaining an image data, and combining the operation data with the image data in substantially real time.

Abstract: A method for processing data in a radiation procedure includes obtaining operation data, and formatting the operation data into a set of image data, wherein the operation data comprises one or a combination of a gantry angle, a patient position, a patient orientation, radiation dose rate, radiation dose fraction, beam pulse rate, beam energy, time when beam was activated, time when beam was deactivated, and beam variation (if any) during an image readout. Also machine axis information, machine status info and operation data from other systems like for instance the RPM system may be included. A method of processing data in a radiation procedure includes obtaining operation data, obtaining an image data, and combining the operation data with the image data in substantially real time.