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1. 发明授权

US10524753B2 X-ray computed tomography apparatus and image processing apparatus 有权
公开(公告)号：US10524753B2
公开(公告)日：2020-01-07
申请号：US14961007
申请日：2015-12-07
申请人： Toshiba Medical Systems Corporation
发明人： Takahiro Yoda , Katsuhito Morino , Yasunobu Yamada , Yojiro Suzuki
IPC分类号： A61B6/00 , G06T11/00
摘要： The disclosure relates to an X-ray computed tomography apparatus that includes an X-ray tube, an X-ray detector, preprocessing circuitry, a reconstruction processor, and control circuitry. The X-ray detector is configured to detect X-rays generated from the X-ray tube. The preprocessing circuitry is configured to generate projection data by executing preprocessing for data acquired by the X-ray detector based on a preprocessing condition. The reconstruction processor is configured to generate image data by executing reconstruction processing for the projection data based on a reconstruction condition. The control circuitry is configured to cause a storage to store the projection data in association with the preprocessing condition, and to read out the projection data based on a designated preprocessing condition.

2. 发明授权

US10531854B2 X-ray CT apparatus 有权
公开(公告)号：US10531854B2
公开(公告)日：2020-01-14
申请号：US15365101
申请日：2016-11-30
申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Takahiro Yoda
IPC分类号： A61B6/03 , G01N23/04 , A61B6/00 , G01N23/046 , G06T11/00
摘要： An X-ray CT apparatus includes processing circuitry. The circuitry controls a voltage generator during non-helical scan to switch tube voltage, thereby causing an imaging to be performed separately with X-rays of a first energy and X-rays of a second energy. The circuitry generates first and second projection data sets, respectively. The circuitry performs image reconstruction based on the first and second projection data sets respectively, thereby generating first and second images respectively. The circuitry performs alignment processing to align the second image with the first image. The circuitry generates a third projection data set based on a processing result of the alignment processing. The circuitry performs transformation processing to transform the second and third projection data sets into projection data sets corresponding to reference materials. The circuitry performs image reconstruction based on the projection data sets after the transformation processing, thereby generating reference material images corresponding to reference materials.

3. 发明授权

US10238356B2 X-ray computed tomography apparatus and medical image display apparatus 有权
公开(公告)号：US10238356B2
公开(公告)日：2019-03-26
申请号：US14715953
申请日：2015-05-19
申请人： Toshiba Medical Systems Corporation
发明人： Yojiro Suzuki , Katsuhiko Ishida , Takahiro Yoda , Katsuhito Morino
IPC分类号： A61B6/00 , A61B6/03 , H05G1/08 , A61B6/12
摘要： According to an embodiment, X-ray CT apparatus includes X-ray generator includes X-ray tube, high-voltage generator, detector, controller and circuitry. High-voltage generator generates tube voltage to be applied to X-ray tube. Detector detects X-rays irradiated from X-ray tube and transmitted through a subject. Controller controls high-voltage generator to scan the subject with first radiation dose and with second radiation dose lower than first radiation dose. Circuitry generates first image based on projection data acquired by scan at first radiation dose, generates second image based on projection data acquired by scan at second radiation dose, and displays first image and second image in common window.

4. 发明授权

US10537293B2 X-ray CT system, image display device, and image display method 有权
公开(公告)号：US10537293B2
公开(公告)日：2020-01-21
申请号：US14119079
申请日：2013-01-21
申请人： Toshiba Medical Systems Corporation
发明人： Go Mukumoto , Katsuhito Morino , Atsushi Fukano , Takahiro Yoda , Masakazu Matsuura
IPC分类号： A61B6/03
摘要： Techniques are provided that enable displaying of medical images that depict cyclic motions in the subject. An X-ray CT system scans, with X-rays, the subject whose targeted region is experiencing a cyclic motion and acquires detection data. This X-ray CT system comprises a reconstruction processor, a moving image creator, and a display controller. The reconstruction processor generates a plurality of sets of volumetric data based on a plurality of sets of detection data that have been acquired during one cycle of the cyclic motion. The moving-image creator creates a moving image that shows the cyclic motion, on the basis of at least a part of the plural sets of volumetric data. The display controller superposes the moving image over an image based on the volumetric data and displays these images on the display unit.

5. 发明授权

US10327728B2 X ray computed tomography apparatus and scan start timing determination method 有权
公开(公告)号：US10327728B2
公开(公告)日：2019-06-25
申请号：US14949119
申请日：2015-11-23
申请人： Toshiba Medical Systems Corporation
发明人： Takahiro Yoda , Katsuhiko Ishida , Masakazu Matsuura
IPC分类号： A61B6/03 , A61B6/00
摘要： According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, a projection data generation circuitry, a setting circuitry, and a scan start timing determination circuitry. The setting circuitry configured to set a region of interest on a slice image generated by a first scan for the object. The scan start timing determination circuitry configured to determine, based on a plurality of projection data values of interest corresponding to the region of interest out of the projection data values generated by a second scan at a dose lower than that in the first scan, a timing of terminating the second scan and starting a third scan at a dose higher than that in the second scan.

6. 发明授权

US10140701B2 X-ray computed tomography apparatus and information processing apparatus 有权
公开(公告)号：US10140701B2
公开(公告)日：2018-11-27
申请号：US14670649
申请日：2015-03-27
申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Masao Yamahana , Shinya Kawanabe , Takahiro Yoda , Risa Onishi , Hiroyuki Onuki
IPC分类号： A61B6/00 , G06T7/00 , A61B6/03
摘要： A reconstruction unit (a pre-processor, a reconstruction unit and an image processor) generates a reconstruction image based on output from the X-ray detector. A correction parameter storage stores correction parameters in time series, the correction parameters being used for correction by which noise or artifact is reduced in processing performed by the reconstruction image unit. A correction parameter analysis unit determines whether or not an abnormal condition occurs based on a temporal change in the correction parameters stored in the correction parameter storage. A notification unit issues a notification indicating the occurrence of an abnormal condition where the correction parameter analysis unit determines that the abnormal state has occurred.

7. 发明授权

US10475213B2 X-ray CT apparatus and image processing apparatus 有权
公开(公告)号：US10475213B2
公开(公告)日：2019-11-12
申请号：US14810838
申请日：2015-07-28
申请人： Toshiba Medical Systems Corporation
发明人： Takahiro Yoda , Katsuhito Morino , Yojiro Suzuki , Katsuhiko Ishida
IPC分类号： G06T11/00 , G01N23/046 , G06T3/40
摘要： An X-ray computed tomography (CT) apparatus according to an embodiment includes processing circuitry. The processing circuitry causes a CT image designated as a display object image to be displayed on a display, every time any of a plurality of reconstructed CT images is designated as the display object image. The processing circuitry causes a newly reconstructed enlarged CT image to be displayed on the display when the processing circuitry receives an enlargement instruction to enlarge the CT image displayed on the display. The processing circuitry performs preprocessing on raw data corresponding to the CT image designated as the display object image, every time any of the CT images is designated as the display object image. The processing circuitry reconstructs the enlarged CT image using the preprocessed raw data, based on the enlargement instruction, when the processing circuitry receives the enlargement instruction.

8. 发明申请

US20170150936A1 X-RAY CT APPARATUS 审中-公开
公开(公告)号：US20170150936A1
公开(公告)日：2017-06-01
申请号：US15365101
申请日：2016-11-30
申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Takahiro Yoda
IPC分类号： A61B6/00 , G06T11/00 , A61B6/03
摘要： An X-ray CT apparatus includes processing circuitry. The circuitry controls a voltage generator during non-helical scan to switch tube voltage, thereby causing an imaging to be performed separately with X-rays of a first energy and X-rays of a second energy. The circuitry generates first and second projection data sets, respectively. The circuitry performs image reconstruction based on the first and second projection data sets respectively, thereby generating first and second images respectively. The circuitry performs alignment processing to align the second image with the first image. The circuitry generates a third projection data set based on a processing result of the alignment processing. The circuitry performs transformation processing to transform the second and third projection data sets into projection data sets corresponding to reference materials. The circuitry performs image reconstruction based on the projection data sets after the transformation processing, thereby generating reference material images corresponding to reference materials.

9. 发明申请

US20140093030A1 X-RAY CT SYSTEM, IMAGE DISPLAY DEVICE, AND IMAGE DISPLAY METHOD 审中-公开
标题翻译： X射线CT系统，图像显示装置和图像显示方法
公开(公告)号：US20140093030A1
公开(公告)日：2014-04-03
申请号：US14119079
申请日：2013-01-21
申请人： Toshiba Medical Systems Corporation , Kabushiki Kaisha Toshiba
发明人： Go Mukumoto , Katsuhito Morino , Atsushi Fukano , Takahiro Yoda , Masakazu Matsuura
IPC分类号： A61B6/03
CPC分类号： A61B6/03 , A61B6/032 , A61B6/486 , A61B6/503 , A61B6/5205 , A61B6/5264 , A61B8/12 , A61B8/5207 , A61B2505/00
摘要： Techniques are provided that enable displaying of medical images that depict cyclic motions in the subject. An X-ray CT system scans, with X-rays, the subject whose targeted region is experiencing a cyclic motion and acquires detection data. This X-ray CT system comprises a reconstruction processor, a moving image creator, and a display controller. The reconstruction processor generates a plurality of sets of volumetric data based on a plurality of sets of detection data that have been acquired during one cycle of the cyclic motion. The moving-image creator creates a moving image that shows the cyclic motion, on the basis of at least a part of the plural sets of volumetric data. The display controller superposes the moving image over an image based on the volumetric data and displays these images on the display unit.
摘要翻译：提供了能够显示描绘受试者中的循环运动的医学图像的技术。 X射线CT系统用X射线扫描目标区域正在经历循环运动的被摄体，并获取检测数据。该X射线CT系统包括重建处理器，运动图像创建器和显示控制器。重建处理器基于在循环运动的一个周期期间已经获取的多组检测数据来生成多组体积数据。运动图像创建器基于多组体积数据的至少一部分，创建显示循环运动的运动图像。显示控制器基于体积数据将运动图像叠加在图像上，并将这些图像显示在显示单元上。

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