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1. 发明申请

US20150279084A1 Guided Noise Reduction with Streak Removal for High Speed C-Arm CT 审中-公开
标题翻译：引导降噪与高速C臂CT条纹去除
公开(公告)号：US20150279084A1
公开(公告)日：2015-10-01
申请号：US14262277
申请日：2014-04-25
申请人： Yu Deuerling-Zheng , Michael Manhart
发明人： Yu Deuerling-Zheng , Michael Manhart
IPC分类号： G06T15/08 , G06T5/00
CPC分类号： G06T5/002 , G06T5/50 , G06T2207/10081 , G06T2207/30016 , G06T2207/30101
摘要： In order to minimize streak artifacts within reconstructions of perfusion maps generated from moving C-arm acquisitions, a streak reduction method includes threshold analysis, time-contrast curve analysis, and total variation analysis. One or more mask volumes and a plurality of contrast agent enhanced volumes are generated based on a plurality of projections generated using a moving C-arm X-ray device. A maximum contrast attenuation volume is generated based on the plurality of contrast agent enhanced volumes. Voxels are identified as streaks based on analyses applied to the one or more mask volumes, the plurality of contrast agent enhanced volumes, and the maximum contrast attenuation volume, respectively.
摘要翻译：为了最小化移动C臂采集产生的灌注图重构中的条纹伪影，条纹减少方法包括阈值分析，时间对比曲线分析和总体变异分析。基于使用移动的C臂X射线装置产生的多个投影来生成一个或多个掩模体积和多个造影剂增强体积。基于多个造影剂增强体积产生最大对比度衰减体积。基于分别应用于一个或多个掩模体积，多个造影剂增强体积和最大对比度衰减体积的体素，将体素识别为条纹。

2. 发明申请

US20140126685A1 ANGIOGRAPHIC EXAMINATION METHOD 审中-公开
标题翻译：放射学检查方法
公开(公告)号：US20140126685A1
公开(公告)日：2014-05-08
申请号：US14014608
申请日：2013-08-30
申请人： Yu Deuerling-Zheng , Michael Manhart
发明人： Yu Deuerling-Zheng , Michael Manhart
IPC分类号： A61B5/00
CPC分类号： A61B5/0033 , A61B6/4441 , A61B6/4458 , A61B6/4464 , A61B6/481 , A61B6/487 , A61B6/504 , A61B6/507 , G06T11/006 , G06T2211/404 , G06T2211/424
摘要： An angiographic examination method for examining an organ, vascular system or other regions of a patient is proposed. Projection images are acquired by an angiography system having an X-ray tube assembly and an X-ray image detector applied to ends of a C-arm, a patient table having a tabletop for carrying the patient, a system control unit, an imaging system and a monitor. Projection images are generated by rotational angiography from a plurality of projection angles. The projection images are subjected to a pre-processing of an FDK reconstruction, the result of which is filtered by a noise-reduction method. A predetermined number of dynamic, iterative reconstruction steps is carried out. Time attenuation curves are reconstructed, which are modeled with a weighted sum of linear basis functions.
摘要翻译：提出了一种用于检查器官，血管系统或患者其他区域的血管造影检查方法。投影图像由具有X射线管组件和X射线图像检测器的血管造影系统获取，该X射线管组件和X射线图像检测器应用于C-臂的末端，具有用于携带患者的桌面的患者台，系统控制单元，成像系统和监视器。通过旋转血管造影从多个投影角度产生投影图像。对投影图像进行FDK重构的预处理，其结果被噪声降低方法滤波。执行预定数量的动态迭代重建步骤。时间衰减曲线被重建，其用线性基函数的加权和建模。

3. 发明授权

US10453198B2 Device and method for delineating a metal object for artifact reduction in tomography images 有权
公开(公告)号：US10453198B2
公开(公告)日：2019-10-22
申请号：US15458206
申请日：2017-03-14
申请人： Michael Manhart
发明人： Michael Manhart
IPC分类号： G06K9/00 , G06T7/11 , A61B6/00 , G06T11/00 , A61B6/03 , A61B6/12
摘要： A method for delineating a metal object for artifact reduction in tomography images is provided. Projection images of a body containing the metal object are received and a volume model of the body is formed on the basis of the projection images. Voxels that are part of a region encompassing the metal object and at least one metal artifact are chosen in the volume model on the basis of segmentation criterion and combined to form a first volume mask. The first volume mask is projected onto the projection images and a respective projection mask is generated. The projection masks are is altered on the basis of pixel values of the projection images. A second volume mask is determined from the altered projection masks. The second volume mask is altered on the basis of voxel values of the volume model and the altered volume mask is supplied as a description of the metal object.

4. 发明授权

US10198800B2 Representing a structure of a body region by digital subtraction angiography 有权
公开(公告)号：US10198800B2
公开(公告)日：2019-02-05
申请号：US15372480
申请日：2016-12-08
申请人： Michael Manhart
发明人： Michael Manhart
IPC分类号： G06T7/174 , G06T7/254 , G06T5/50 , G06T7/11 , G06T5/00 , G06T7/00 , G06T11/60
摘要： A method is provided for representing a first structure of a body region by digital subtraction angiography. The method includes: receiving a filler image of the body region created by an angiography apparatus, which represents a second structure of the body region and the first structure with a first contrast medium concentration in the first structure; determining a mask image of the body region representing the second structure; determining a subtraction image by editing out of the second structure from the filler image by the mask image; determining a guidance image representing the first structure based on the subtraction image; reducing image noise of the subtraction image by the guidance image; and representing the first structure based on the noise-reduced subtraction image.

5. 发明申请

US20170270687A1 DEVICE AND METHOD FOR DELINEATING A METAL OBJECT FOR ARTIFACT REDUCTION IN TOMOGRAPHY IMAGES 审中-公开
公开(公告)号：US20170270687A1
公开(公告)日：2017-09-21
申请号：US15458206
申请日：2017-03-14
申请人： Michael Manhart
发明人： Michael Manhart
IPC分类号： G06T7/70 , G06T7/11 , G06T7/13 , G06T7/00
CPC分类号： G06T7/11 , A61B6/032 , A61B6/12 , A61B6/4441 , A61B6/5205 , A61B6/5258 , G06T11/008 , G06T2207/10081
摘要： A method for delineating a metal object for artifact reduction in tomography images is provided. Projection images of a body containing the metal object are received and a volume model of the body is formed on the basis of the projection images. Voxels that are part of a region encompassing the metal object and at least one metal artifact are chosen in the volume model on the basis of segmentation criterion and combined to form a first volume mask. The first volume mask is projected onto the projection images and a respective projection mask is generated. The projection masks are is altered on the basis of pixel values of the projection images. A second volume mask is determined from the altered projection masks. The second volume mask is altered on the basis of voxel values of the volume model and the altered volume mask is supplied as a description of the metal object.

6. 发明申请

US20170169553A1 REPRESENTING A STRUCTURE OF A BODY REGION BY DIGITAL SUBTRACTION ANGIOGRAPHY 审中-公开
公开(公告)号：US20170169553A1
公开(公告)日：2017-06-15
申请号：US15372480
申请日：2016-12-08
申请人： Michael Manhart
发明人： Michael Manhart
IPC分类号： G06T5/50 , G06T11/60 , G06T7/174 , G06T5/00 , G06T7/00 , G06T7/11
CPC分类号： G06T5/50 , G06T5/002 , G06T7/0014 , G06T7/0016 , G06T7/11 , G06T7/174 , G06T7/254 , G06T11/60 , G06T2207/10016 , G06T2207/10116 , G06T2207/20182 , G06T2207/20192 , G06T2207/30101
摘要： A method is provided for representing a first structure of a body region by digital subtraction angiography. The method includes: receiving a filler image of the body region created by an angiography apparatus, which represents a second structure of the body region and the first structure with a first contrast medium concentration in the first structure; determining a mask image of the body region representing the second structure; determining a subtraction image by editing out of the second structure from the filler image by the mask image; determining a guidance image representing the first structure based on the subtraction image; reducing image noise of the subtraction image by the guidance image; and representing the first structure based on the noise-reduced subtraction image.

7. 发明授权

US4480788A Snow gun 失效
标题翻译：雪枪
公开(公告)号：US4480788A
公开(公告)日：1984-11-06
申请号：US425180
申请日：1982-09-28
申请人： Michael Manhart
发明人： Michael Manhart
IPC分类号： B05B7/02 , B05B7/04 , B05B7/24 , F25C3/04
CPC分类号： B05B7/0433 , F25C3/04 , F25C2303/0481
摘要： The compressed-air supply line of the snow gun passes through the center of the pressurized-water supply line, thus bounding an annular chamber between them. Inner nozzles forming part of the air line interconnect the two supply lines. The compressed-air supply line opens out into an interior space within the spray head, this space being bounded at the front end by a perforated end piece. For the purpose of reducing the expenditure of energy for a given homogeneity of the air-water mixture, the radial width of the annular chamber in the vicinity of the inner nozzles is from one to three times greater than the diameter of an imaginary bore whose area corresponds to the total area of all inner nozzle bores, divided by three.
摘要翻译：雪枪的压缩空气供应管线通过加压水供应管线的中心，从而在它们之间限定环形室。形成空气管路的一部分的内部喷嘴将两条供应管线相互连接。压缩空气供应管线打开到喷头内的内部空间中，该空间在前端由穿孔的端部件限定。为了减少空气 - 水混合物的给定均匀性的能量消耗的目的，内部喷嘴附近的环形室的径向宽度是其面积的虚拟孔的直径的一至三倍对应于所有内部喷嘴孔的总面积除以3。

8. 发明授权

US11134904B2 Scattered radiation compensation for a medical imaging appliance 有权
公开(公告)号：US11134904B2
公开(公告)日：2021-10-05
申请号：US15803380
申请日：2017-11-03
申请人： Günter Lauritsch , Michael Manhart , Sebastian Bauer
发明人： Günter Lauritsch , Michael Manhart , Sebastian Bauer
IPC分类号： A61B6/00 , A61B6/06 , G01T1/16 , G01T1/29 , A61B6/03
摘要： A method for operating a medical imaging apparatus includes acquiring an intensity distribution of an X-ray radiation by a first X-ray detector assigned to a first radiation source. A scattered radiation distribution of scattered radiation generated at the object is acquired by a second X-ray detector. A spatial distribution for the component of the scattered radiation is estimated based on the scattered radiation distribution acquired by the second X-ray detector. An intensity distribution of the component of the transmitted primary X-ray radiation is determined from the intensity distribution acquired by the first X-ray detector depending on the estimated spatial distribution.

9. 发明申请

US20180125438A1 SCATTERED RADIATION COMPENSATION FOR A MEDICAL IMAGING APPLIANCE 审中-公开
公开(公告)号：US20180125438A1
公开(公告)日：2018-05-10
申请号：US15803380
申请日：2017-11-03
申请人： Günter Lauritsch , Michael Manhart , Sebastian Bauer
发明人： Günter Lauritsch , Michael Manhart , Sebastian Bauer
IPC分类号： A61B6/00 , G01T1/16 , G01T1/29
CPC分类号： A61B6/4014 , A61B6/03 , A61B6/032 , A61B6/06 , A61B6/4291 , A61B6/4441 , A61B6/483 , A61B6/5205 , A61B6/5282 , A61B6/584 , G01T1/1603 , G01T1/2914
摘要： A method for operating a medical imaging apparatus includes acquiring an intensity distribution of an X-ray radiation by a first X-ray detector assigned to a first radiation source. A scattered radiation distribution of scattered radiation generated at the object is acquired by a second X-ray detector. A spatial distribution for the component of the scattered radiation is estimated based on the scattered radiation distribution acquired by the second X-ray detector. An intensity distribution of the component of the transmitted primary X-ray radiation is determined from the intensity distribution acquired by the first X-ray detector depending on the estimated spatial distribution.

10. 发明授权

US4491273A Snow gun 失效
标题翻译：雪枪
公开(公告)号：US4491273A
公开(公告)日：1985-01-01
申请号：US427421
申请日：1982-09-29
申请人： Michael Manhart
发明人： Michael Manhart
IPC分类号： B05B1/14 , B05B7/00 , F25C3/04
CPC分类号： B05B7/0031 , B05B1/14 , F25C3/04 , F25C2303/0481
摘要： The compressed-air supply line of the snow gun passes through the center of the pressurized-water supply line. The air line opens out into an interior space within the spray head, this space being bounded at the front end by a perforated end piece and serving as a pre-expansion chamber. For the purpose of saving energy, the end piece has at least three centrosymmetrically disposed discharge openings.
摘要翻译：雪枪的压缩空气供给管路通过加压供水管路的中心。空气管线打开到喷头内的内部空间中，该空间在前端由穿孔的端部限定并用作预膨胀室。为了节约能源，端件具有至少三个中心对称设置的排放口。

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