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公开(公告)号：US11324466B2
公开(公告)日：2022-05-10
申请号：US15931292
申请日：2020-05-13
发明人： Sodai Tanaka , Hiroki Shirato
摘要： An image processor applies computation processing to a plurality of CT images formed by irradiation of radiation of a plurality of energy levels to acquire monochromatic CT images. The image processor acquires a first energy level CT image formed by irradiation of first energy level radiation and a second energy level CT image formed by irradiation of second energy level radiation, applies a plurality of weighted computations to the first and second energy level CT images to compute a plurality of monochromatic CT images as a result of the weighted computations, segments a surrounding region of a highly-absorbent material circumferentially into a plurality of regions of interest having a predetermined area and calculates a standard deviation of the surrounding region by using a mean value of image data of each region of interest, for each monochromatic CT image, and selects a monochromatic CT image with a small standard deviation.
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公开(公告)号：US11272896B2
公开(公告)日：2022-03-15
申请号：US16749979
申请日：2020-01-22
申请人： FUJIFILM CORPORATION
发明人： Takao Kuwabara
摘要： A radiographic image capturing system includes: a mammography apparatus that emits radiation having a first energy to a subject and captures a first radiographic image with a radiation detector and emits radiation having a second energy greater than the first energy to the subject and captures a second radiographic image with the radiation detector and that captures the first radiographic image and the second radiographic image with a breast in a state in which a contrast medium using iodine is administered. The radiographic image capturing system includes a phantom for evaluation of the mammography apparatus that has a solid material containing at least one element, which has a value of a k absorption edge that is equal to or greater than the first energy and equal to or less than the second energy, as an image evaluation pattern simulating the contrast medium.
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公开(公告)号：US11179122B2
公开(公告)日：2021-11-23
申请号：US16582004
申请日：2019-09-25
摘要： A system and method includes detection of a trigger event, automatic injection, in response to detecting the trigger event, of a bolus of contrast medium into a patient volume after expiration of a predetermined injection delay period, automatic acquisition, in response to detecting the trigger event, of a plurality of images after expiration of a predetermined imaging delay period, where two or more of the plurality of images comprise an image of the bolus at respective different locations within vasculature of the patient volume, generation of a composite image based on the plurality of images, the composite image including a representation of the vasculature of the patient volume, and display of the composite image.
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公开(公告)号：US10470731B2
公开(公告)日：2019-11-12
申请号：US15825002
申请日：2017-11-28
摘要： A system and method includes detection of a trigger event, automatic injection, in response to detecting the trigger event, of a bolus of contrast medium into a patient volume after expiration of a predetermined injection delay period, automatic acquisition, in response to detecting the trigger event, of a plurality of images after expiration of a predetermined imaging delay period, where two or more of the plurality of images comprise an image of the bolus at respective different locations within vasculature of the patient volume, generation of a composite image based on the plurality of images, the composite image including a representation of the vasculature of the patient volume, and display of the composite image.
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公开(公告)号：US10416323B2
公开(公告)日：2019-09-17
申请号：US15446187
申请日：2017-03-01
发明人： Takuya Ryu , Tomoyuki Yagi , Katsuro Takenaka , Hideyuki Okada , Eriko Sato , Shinichi Takeda
摘要： A radiation imaging apparatus includes a pixel array, a scanning circuit for scanning a plurality of rows of the pixel array in accordance with a selected mode of a plurality of modes, and a readout circuit configured to read out signals from pixels on a selected row in scanning by the scanning circuit. The plurality of modes include a first mode of performing image capturing at a first frame rate and a second mode of performing image capturing at a second frame rate lower than the first frame rate. The number of times of scanning on the plurality of rows by the scanning circuit in one frame period in the second mode is larger than that of scanning on the plurality of rows by the scanning circuit in one frame period in the first mode.
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公开(公告)号：US10245003B2
公开(公告)日：2019-04-02
申请号：US14972328
申请日：2015-12-17
发明人： Shinsuke Hayashida
摘要： A radiation imaging apparatus includes: a radiation detection unit including an image obtaining pixel for obtaining a radiation image and a dose obtaining pixel for obtaining a radiation dose; a generating unit configured to generate calibration data for calibrating an output value of the dose obtaining pixel by comparing an output value of the image obtaining pixel and the output value of the dose obtaining pixel; and a calibration unit configured to calibrate the output value of the dose obtaining pixel by using the calibration data.
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公开(公告)号：US10191181B2
公开(公告)日：2019-01-29
申请号：US15258108
申请日：2016-09-07
申请人： ADANI Systems, Inc.
摘要： A multi-channel system for truck scanning, includes an impulse radiation source; and a plurality of detection circuits, each detection circuit comprising a scintillator, a photodiode, a supplemental circuit, an integrator and an ADC, connected in series. A current of the photodiode is proportional to radiation from the impulse radiation source. A data storage device stores outputs of the ADCs and provides the outputs to a computer that converts them to a shadow image of the scanned truck. The supplemental circuit isolates a capacitance of the photodiode from the integrator, filters out low frequency signals from the photodiode, amplifies the signal from the photodiode and reduces a bandwidth of the photodiode seen by the integrator. The supplemental circuit reduces an influence of capacitance of the photodiode on system noise, increases a signal-to-noise ratio of the system, and reduces an influence of photodiode temperature changes on a quality of the scanned image.
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公开(公告)号：US10085710B2
公开(公告)日：2018-10-02
申请号：US15094588
申请日：2016-04-08
发明人： Masataka Suzuki , Shichihei Sakuragi , Ryo Suzaki , Motoki Tagawa
摘要： A radiographing system includes a plurality of radiation imaging apparatuses and a composition processing unit which composites a plurality of radiation images acquired from the plurality of radiation imaging apparatuses to generate a long-length image. Each of the radiation imaging apparatuses includes a radiation detecting panel which has a plurality of pixels arrayed in a two-dimensional matrix and converts radiated radiation into an image signal, and a position acquiring unit which acquires positional information by communicating with an external apparatus. A position deciding unit decides an order, in which the plurality of radiation images to be composited by the composition processing unit are composited, based on the positional information acquired by the position acquiring unit.
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公开(公告)号：US09993213B2
公开(公告)日：2018-06-12
申请号：US14819899
申请日：2015-08-06
发明人： Duhgoon Lee
CPC分类号： A61B6/482 , A61B6/4035 , A61B6/4241 , A61B6/463 , A61B6/469 , A61B6/505 , A61B6/5205 , A61B6/5241 , A61B6/563 , G06F19/00 , G16H10/60
摘要： An X-ray imaging apparatus displays a bone or soft tissue image of an X-ray image, which corresponds to a region selected by a user, thereby reducing a diagnosis time. In addition, an X-ray imaging system transmits a first energy X-ray image and a second energy X-ray image to a central image management system, and a user control apparatus receives the images from the central image management system and displays a bone or soft tissue image corresponding to the selected region, thereby reducing burden imposed on server capacity of the central image management system as well as reducing a diagnosis time.
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公开(公告)号：US09456796B2
公开(公告)日：2016-10-04
申请号：US14452643
申请日：2014-08-06
发明人： Seok Min Han , Dong Goo Kang , Sung Hoon Kang , Young Hun Sung , Myung Jin Chung
摘要： Disclosed herein are an X-ray imaging apparatus and a method for controlling the same. The X-ray imaging apparatus includes an X-ray generator configured to radiate first-energy X-rays toward an object, an X-ray detector configured to detect the first-energy X-rays which propagate through the object, an image processor configured to generate a first object image which correspond to the detected first-energy X-rays and to estimate a second object image which corresponds to second-energy X-rays based on the generated first object image, and a controller configured to control the image processor to repeatedly estimate the second object image by controlling the X-ray generator to repeatedly radiate the first-energy X-rays toward the object.
摘要翻译： 本文公开了一种X射线成像装置及其控制方法。 X射线成像装置包括被配置为朝向物体照射第一能量X射线的X射线发生器，被配置为检测通过物体传播的第一能量X射线的X射线检测器，被配置为 以产生与检测到的第一能量X射线相对应的第一对象图像，并且基于所生成的第一对象图像估计与第二能量X射线对应的第二对象图像，以及控制器，被配置为控制图像处理器 通过控制X射线发生器来重复地向物体辐射第一能量X射线来重复估计第二物体图像。
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