公开(公告)号：US11963810B2

公开(公告)日：2024-04-23

申请号：US17591617

申请日：2022-02-03

申请人： FUJIFILM CORPORATION

发明人： Tomoko Taki

IPC分类号： G06N3/08 ,  A61B6/00 ,  A61B6/03 ,  A61B6/50 ,  G06T7/00

CPC分类号： A61B6/482 ,  A61B6/032 ,  A61B6/483 ,  A61B6/505 ,  G06N3/08 ,  G06T7/0012 ,  G06T2207/10116 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30008

摘要： An estimation device includes at least one processor, in which the processor functions as a learned neural network that derives a result of estimation of at least one emphasis image in which a specific composition of a subject including a plurality of compositions is emphasized from a simple two-dimensional image acquired by simply imaging the subject. The learned neural network is learned by using, as teacher data, a composite two-dimensional image representing the subject, which is derived by combining a three-dimensional CT image of the subject, and an emphasis image for learning in which the specific composition of the subject is emphasized, which is derived from the CT image.

公开(公告)号：US11890125B2

公开(公告)日：2024-02-06

申请号：US17479645

申请日：2021-09-20

申请人： Accuray, Inc.

发明人： Jacob Shea ,  Brandon Frederick ,  Eric Schnarr ,  Daniel Gagnon

IPC分类号： A61B6/00 ,  A61B6/02 ,  A61N5/10 ,  G06T11/00 ,  A61B6/03 ,  A61B6/06 ,  A61B6/08 ,  G06T7/30 ,  A61B6/04

CPC分类号： A61B6/5282 ,  A61B6/027 ,  A61B6/032 ,  A61B6/06 ,  A61B6/405 ,  A61B6/4078 ,  A61B6/4085 ,  A61B6/469 ,  A61B6/488 ,  A61B6/5205 ,  G06T11/005 ,  A61B6/025 ,  A61B6/03 ,  A61B6/035 ,  A61B6/0407 ,  A61B6/08 ,  A61B6/4014 ,  A61B6/4021 ,  A61B6/4028 ,  A61B6/4064 ,  A61B6/4435 ,  A61B6/4441 ,  A61B6/4458 ,  A61B6/481 ,  A61B6/482 ,  A61B6/483 ,  A61B6/484 ,  A61B6/541 ,  A61B6/582 ,  A61N5/107 ,  A61N5/1049 ,  A61N5/1067 ,  A61N5/1071 ,  A61N5/1082 ,  A61N2005/1085 ,  A61N2005/1091 ,  A61N2005/1095 ,  G06T7/30 ,  G06T11/008 ,  G06T2207/10081 ,  G06T2210/41 ,  G06T2211/404 ,  G06T2211/412 ,  G06T2211/424 ,  G06T2211/428 ,  G06T2211/432

摘要： A multimodal imaging apparatus, comprising a rotatable gantry system positioned at least partially around a patient support, a first source of radiation coupled to the rotatable gantry system, the first source of radiation configured for imaging radiation, a second source of radiation coupled to the rotatable gantry system, the second source of radiation configured for at least one of imaging radiation or therapeutic radiation, wherein the second source of radiation has an energy level more than the first source of radiation, and a second radiation detector coupled to the rotatable gantry system and positioned to receive radiation from the second source of radiation, and a processor configured to combine first measured projection data based on the radiation detected by the first detector with second measured projection data based on the radiation detected by the second detector, and reconstruct an image based on the combined data, wherein the reconstructing comprises at least one of correcting the second measured projection data using the first measured projection data, correcting the first measured projection data using the second projection data, and distinguishing different materials imaged in the combined data using the first measured projection data and the second measured projection.

公开(公告)号：US11779296B2

公开(公告)日：2023-10-10

申请号：US16825857

申请日：2020-03-20

申请人： CANON MEDICAL SYSTEMS CORPORATION

发明人： Zhan Xiaohui ,  Qiang Yi ,  Zhihong Ye

IPC分类号： A61B6/03 ,  A61B6/00 ,  G21K1/02

CPC分类号： A61B6/5282 ,  A61B6/032 ,  A61B6/40 ,  A61B6/4021 ,  A61B6/42 ,  A61B6/4208 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/4266 ,  A61B6/4275 ,  A61B6/4291 ,  A61B6/4435 ,  A61B6/482 ,  A61B6/483 ,  A61B6/5258 ,  A61B6/582 ,  G21K1/02 ,  G21K1/025

摘要： An apparatus and a method for correcting for signal variations in pixels of a main photoelectric conversion element in a radiation detection apparatus due to focal spot position drifts. Edge reference detectors are positioned next to a main detector, in a fan beam coverage but outside a scan field of view. The signal variations of the edge reference detectors under an anti-scatter-grid shadow are used to estimate a real-time focal spot movement, which is used to estimate a shadow/signal variation on the main detector that are in the scan field of view.

公开(公告)号：US11766228B2

公开(公告)日：2023-09-26

申请号：US17467621

申请日：2021-09-07

申请人： INSTITUT DE FÍSICA D{acute over ( )}ALTES ENERGIES (IFAE)

发明人： Mokhtar Chmeissani Raad

IPC分类号： A61B6/00 ,  A61B6/04 ,  G01T1/24

CPC分类号： A61B6/502 ,  A61B6/0435 ,  A61B6/4241 ,  A61B6/481 ,  A61B6/483 ,  A61B6/5282 ,  G01T1/241 ,  G01T1/244 ,  G01T1/247

摘要： An auxiliary device attachable to a mammography machine having an X-ray source and an X-ray receptor having a receptor area. The auxiliary device includes a housing having a length, width, and thickness, wherein the length and width of the housing are adapted to a length and width of the receptor area. The auxiliary device further includes one or more attachments for attaching the auxiliary device to the mammography machine, and a detector inside the housing. The detector includes a slab of semiconductor material, an electrode on a first side of the slab, and a pixelated electrode detector on the second side of the slab, and a read-out circuit bonded to the pixelated electrode detector, and the read-out circuit being configured for spectral photon counting with two or more energy bins. Methods for medical imaging are also provided.

公开(公告)号：US20180303452A1

公开(公告)日：2018-10-25

申请号：US16016823

申请日：2018-06-25

申请人： Siemens Healthcare GmbH

发明人： Philipp BERNHARDT ,  Rudolf Leiblein

IPC分类号： A61B6/00 ,  G01N23/20008

CPC分类号： A61B6/545 ,  A61B6/03 ,  A61B6/032 ,  A61B6/405 ,  A61B6/4092 ,  A61B6/483 ,  A61B6/5205 ,  A61B6/5282 ,  A61B6/542 ,  A61B6/585 ,  G01N23/20008 ,  G01N2223/306 ,  G01T1/026 ,  H05G1/44 ,  H05G1/46

摘要： An X-ray projection of a region of examination and an associated X-ray parameter are received via an interface, the X-ray projection including X-ray intensities in a first pixel set. The X-ray parameter relates to at least one X-ray voltage from an X-ray source. Scattered radiation intensity is determined in a second pixel set, the second pixel set being a subset of the first pixel set. A first calculation of first exposure parameters in the second pixel set then occurs, each of the first exposure parameters in a pixel of the second pixel set being based on the X-ray intensity in the pixel and the scattered radiation intensity in the pixel. Furthermore, a second calculation of a scalar second exposure parameter occurs based on the first exposure parameters and an adjustment of the X-ray parameter is performed by comparing the scalar second exposure parameter with a reference value.

公开(公告)号：US09855018B2

公开(公告)日：2018-01-02

申请号：US14782968

申请日：2014-02-25

申请人： Konica Minolta, Inc.

发明人： Masaya Hamano ,  Akira Kurahashi ,  Norihiro Matsusaka ,  Junko Kiyohara ,  Tomoyasu Yokoyama ,  Satoshi Nishino

IPC分类号： A61B6/00 ,  A61B6/04

CPC分类号： A61B6/566 ,  A61B6/0407 ,  A61B6/4035 ,  A61B6/4233 ,  A61B6/4266 ,  A61B6/4283 ,  A61B6/4417 ,  A61B6/4452 ,  A61B6/463 ,  A61B6/465 ,  A61B6/467 ,  A61B6/483 ,  A61B6/484 ,  A61B6/5235 ,  A61B6/5247 ,  A61B6/563

摘要： Provided are a diagnostic medical image system and the like which enable diagnostic medical images generated in either an imaging system used for general imaging or an imaging system which includes a Talbot imaging device to be accurately associated with imaging order information. In the diagnostic medical image system, a controller groups a plurality of types of diagnostic medical images reconstructed and generated on the basis of a plurality of image signals captured by a second imaging system equipped with a Talbot imaging device and transmits the group to a console; and the console associates one diagnostic medical image generated from one image signal acquired from a first imaging system equipped with an X-ray imaging device with the imaging order information corresponding thereto and, by the same associating method, associates the grouped plurality of types of diagnostic medical images transmitted from the controller with the imaging order information corresponding thereto.

公开(公告)号：US09700275B2

公开(公告)日：2017-07-11

申请号：US14890006

申请日：2014-04-25

申请人： PAUL SCHERRER INSTITUT

发明人： Marco Stampanoni ,  Zhentian Wang

IPC分类号： G01N23/207 ,  A61B6/04 ,  G01N23/201 ,  A61B6/00 ,  G01N23/20 ,  G01N23/083

CPC分类号： A61B6/502 ,  A61B6/4035 ,  A61B6/4291 ,  A61B6/483 ,  A61B6/484 ,  A61B6/5217 ,  G01N23/083 ,  G01N23/20083

摘要： A quantitative radiographic method uses X-ray imaging. The method uses a ratio of the absorption signal and the (small-angle) scattering signal (or vice-versa) of the object as a signature for the materials. The ratio image (dubbed R image) is independent from the thickness of the object in a wide sense, and therefore can be used to discriminate materials in a radiographic approach. This can be applied to imaging systems, which can record these two signals from the underlying object (for instance, an X-ray grating interferometer). Possible applications could be in material science, non-destructive testing and medical imaging. Specifically, the method can be used to estimate a volumetric breast density. The use of the R image and the corresponding algorithm are also presented hereafter.

公开(公告)号：US09589373B2

公开(公告)日：2017-03-07

申请号：US14172345

申请日：2014-02-04

申请人： Carestream Health, Inc.

发明人： Edward B. Gindele

IPC分类号： G06T7/00 ,  G06T11/00 ,  A61B6/03 ,  A61B6/00

CPC分类号： G06T11/006 ,  A61B6/032 ,  A61B6/4291 ,  A61B6/482 ,  A61B6/483 ,  A61B6/5205 ,  A61B6/5258 ,  A61B6/5282 ,  G06T2211/408 ,  G06T2211/424

摘要： Methods and/or apparatus for iteratively reconstructing a 3-dimensional volume for an object captured with radiographic imaging that includes an electronic sensor, exemplary methods can be performed at least in part on a computer, can include receiving a 3-dimensional volume data set generated from imaging an object; identifying a set of intra system components corresponding to system components used to capture images of the object, where the intra system components include at least an x-ray source within system components configured to be placed before the object; representing x-ray emission characteristics of the x-ray source as a function of angle and energy; using the 3D emission characteristics to simulate the forward projection of x-ray photons to generate a primary image and/or a scattered image; and using the primary image and/or the scattered image to reconstruct an improved 3-dimensional volume data set.

摘要翻译： 用于迭代地重构用于包括电子传感器的放射照相成像捕获的物体的3维体积的方法和/或装置可以至少部分地在计算机上执行示例性方法，可以包括接收生成的3维体积数据集 从成像对象; 识别对应于用于捕获对象的图像的系统组件的一组内部系统组件，其中内部系统组件至少包括被配置为放置在对象之前的系统组件内的x射线源; 表示x射线源的X射线发射特性作为角度和能量的函数; 使用3D发射特征来模拟x射线光子的向前投影以产生主图像和/或散射图像; 并且使用主图像和/或散射图像重建改进的三维体数据集。

公开(公告)号：US09488739B2

公开(公告)日：2016-11-08

申请号：US14574103

申请日：2014-12-17

申请人： The Board of Trustees of the Leland Stanford Junior University

发明人： Norbert J. Pelc

IPC分类号： G01N23/00 ,  G01T1/24 ,  G01N23/04 ,  A61B6/00 ,  A61B6/03

CPC分类号： G01T1/247 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/483 ,  A61B6/5217 ,  G01N23/046

摘要： Spectral x-ray imaging using a photon counting x-ray detector (PCXD) transmits a broad spectrum x-ray beam through an object, detects the transmitted x-ray beam with the PCXD and processes the detected signals to determine material characteristics of the object using both the detected signals as a function of detector layer and the detected signals as a function of the particular energy band. Each detector layer of the multiple detector layers produces at least two signals, each signal representing a detected x-ray intensity in a particular energy band, and the depth information contained in the separate read-out channels.

摘要翻译： 使用光子计数X射线检测器（PCXD）的光谱X射线成像通过物体传输广谱X射线束，用PCXD检测发射的X射线束，并处理检测到的信号，以确定物体的材料特性 使用检测到的信号作为检测器层的函数和检测到的信号作为特定能带的函数。 多个检测器层的每个检测器层产生至少两个信号，每个信号表示在特定能带中检测到的x射线强度，以及包含在分离的读出通道中的深度信息。

公开(公告)号：US20160189374A1

公开(公告)日：2016-06-30

申请号：US14921893

申请日：2015-10-23

申请人： Hobbit Wave, Inc.

发明人： Harvey C. WOODSUM ,  Christopher M. WOODSUM

IPC分类号： G06T7/00 ,  A61B8/14 ,  A61B5/00 ,  A61B8/08 ,  G06T11/00 ,  G06K9/52

CPC分类号： A61B5/7253 ,  A61B5/055 ,  A61B5/7225 ,  A61B6/032 ,  A61B6/483 ,  A61B6/5205 ,  G06K9/522 ,  G06T11/005 ,  G06T2211/421

摘要： In an exemplary embodiment, a tomography device comprises a scanner that obtains image slices. The device additionally comprises at least one processor configured to: perform a Hermetic Transform on the image slices to obtain hermetically transformed data using; filter and perform an Inverse Hermetic Transform on the Hermetic Transform data to obtain filtered inverse Hermetic Transform data; and perform back projection and angle integration on the filtered inverse Hermetic Transform data.

摘要翻译： 在示例性实施例中，断层摄影装置包括获得图像切片的扫描器。 所述设备还包括至少一个处理器，其被配置为：对所述图像切片执行密码变换，以使用以下方式获得密集变换的数据; 过滤并对密码变换数据进行反向密码变换，以获得滤波的反向密码变换数据; 并对滤波的反向Hermetic Transform数据进行反投影和角度积分。