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    • 14. 发明申请
    • PROSPECTIVE RESPIRATORY TRIGGERING WITH RETROSPECTIVE VALIDATION FOR 4D-MAGNETIC RESONANCE IMAGING
    • 具有四维磁共振成像回溯验证的前瞻性呼吸触发
    • WO2016023910A1
    • 2016-02-18
    • PCT/EP2015/068483
    • 2015-08-11
    • KONINKLIJKE PHILIPS N.V.
    • NIELSEN, TimKRUEGER, Sascha
    • G01R33/567A61B5/113G01R33/565
    • G01R33/5673A61B5/055A61B5/113A61B5/7207A61B5/7221A61B5/7292G01R33/56509
    • A method of operating a magnetic resonance imaging system (10) being connectable to a respiration monitoring means (46) which is configured to provide an output signal (48) whose level represents a respiration state of the subject of interest (20), the method comprising: - a step (54) of providing a prospective acquisition scheme for acquiring magnetic resonance images at each respiration state of a set of selected respiration states of the subject of interest (20), the triggering on the selected respiration states being based on predetermined threshold output signal levels of the respiration monitoring means (46), and, during executing magnetic resonance image acquisition pursuant to the prospective acquisition scheme, a step (58) of comparing actual respiration states at which magnetic resonance images were actually acquired, with the selected respiration states according to the prospective acquisition scheme and predetermined ranges of tolerance (52) of the selected respiration states, - a step (60) of modifying the prospective acquisition scheme, if one of the actual respiration states lies outside the predetermined range of tolerance (52) of the selected respiration state, and a step (62) of proceeding execution of magnetic resonance imaging acquisition pursuant to the modified prospective acquisition scheme; and a magnetic resonance imaging system (10) comprising a control unit (26) that is configured to carry out steps of an embodiment of such a method.
    • 一种操作磁共振成像系统(10)的方法,所述磁共振成像系统(10)可连接到呼吸监测装置(46),所述呼吸监测装置(46)被配置为提供其电平表示感兴趣对象(20)的呼吸状态的输出信号(48) 包括: - 步骤(54),其提供用于在感兴趣对象(20)的一组选定呼吸状态的每个呼吸状态下获取磁共振图像的预期采集方案,所选呼吸状态上的触发基于预定的 呼吸监测装置(46)的阈值输出信号电平,并且在根据预期获取方案执行磁共振图像采集期间,将实际获取磁共振图像的实际呼吸状态与所选择的步骤 根据预期采集方案和所选择的呼吸统计量的预定容限范围(52)进行呼吸状态 如果所述实际呼吸状态之一位于所选择的呼吸状态的预定容许范围(52)之外,则修改所述预期采集方案的步骤(60),以及执行磁共振的步骤(62) 根据修改的预期收购方案进行成像采集; 以及包括控制单元(26)的磁共振成像系统(10),所述控制单元被配置为执行这种方法的实施例的步骤。
    • 15. 发明申请
    • METHOD OF SCAN GEOMETRY PLANNING FOR DETERMINING WALL THICKNESS OF AN ANATOMIC DETAIL USING MAGNETIC RESONANCE IMAGING
    • 使用磁共振成像确定解剖细节壁厚的扫描几何规划方法
    • WO2015139977A1
    • 2015-09-24
    • PCT/EP2015/054798
    • 2015-03-09
    • KONINKLIJKE PHILIPS N.V.
    • VOIGT, Tobias RatkoWEISS, SteffenKRUEGER, Sascha
    • G06T7/60A61B5/05G01R33/54
    • G06T7/0012A61B5/055A61B5/1072A61B5/1076G01R33/543G01R33/5608G06T7/62G06T2207/10088G06T2207/20101G06T2207/30048
    • A method for determining wall thickness of an anatomic detail (52), in particular of the heart, of a subject of interest (20) by magnetic resonance imaging, comprising steps of - defining (82) a first location (54) and a second location (56) on a surface representation; - generating (84) a line-structure of interest (60), - determining (86), for each location (62) of a plurality of locations (62), a normal direction (64); - determining (88) a mean normal direction (66); - determining (90) a mean imaging plane (68); - determining (92) a measure that is representative of angular deviations (Δβ i ) of the determined normal directions (64); - based on the determined measure, determining (96) imaging planes (70); - determining (98) deviations of the determined normal directions (64) to the imaging planes (70); - acquiring (100) magnetic resonance images for all imaging planes (68, 70); and - determining (102) the wall thickness at a specific location (62) from the magnetic resonance image acquired in that imaging plane (70) that has the lowest angular deviation to the normal direction (64) at the specific location (62); a magnetic resonance imaging system (10) having a control unit (26) that is configured to carry out steps (78-102) of such a method; and a software module (50) for carrying out such a method, wherein the method steps (78-102) to be conducted are converted into a program code that is implementable in a memory unit (28) and is executable by a processor unit (30) of the magnetic resonance imaging system (10).
    • 一种用于通过磁共振成像确定感兴趣对象(20)的解剖细节(52),特别是心脏的壁厚的方法,包括以下步骤: - 限定(82)第一位置(54)和第二位置 表面上的位置(56); - 产生(84)感兴趣的线结构(60), - 确定(86)对于多个位置(62),法线方向(64)的每个位置(62)。 - 确定(88)平均法线方向(66); - 确定(90)平均成像平面(68); - 确定(92)表示所确定的法线方向(64)的角度偏差(Δβi)的度量; - 基于确定的测量,确定(96)成像平面(70); - 确定(98)所确定的法线方向(64)与成像平面(70)的偏差; - 获取(100)所有成像平面(68,70)的磁共振图像; 以及 - 确定(102)所述特定位置(62)处的特定位置(62)处的所述壁厚,所述磁共振图像在所述特定位置(62)具有最低角度偏差的所述成像平面(70)中与所述法线方向(64)获取; 具有控制单元(26)的磁共振成像系统(10),其被配置为执行这种方法的步骤(78-102); 以及用于执行这种方法的软件模块(50),其中要执行的方法步骤(78-102)被转换成可在存储器单元(28)中实现的程序代码,并且可由处理器单元 30)磁共振成像系统(10)。
    • 16. 发明申请
    • MAGNETIC RESONANCE COIL ASSEMBLY FOR FIDUCIAL MARKERS
    • FIDUCAL MARKERS的磁共振线圈组件
    • WO2015086480A1
    • 2015-06-18
    • PCT/EP2014/076807
    • 2014-12-08
    • KONINKLIJKE PHILIPS N.V.
    • UHLEMANN, FalkKRUEGER, SaschaWIRTZ, DanielWEISS, Steffen
    • G01R33/34G01R33/341G01R33/58
    • A61B90/39A61B5/055A61B2090/3958G01R33/285G01R33/34007G01R33/34069G01R33/341G01R33/58
    • The invention provides for a medical apparatus (100) with a magnetic resonance coil assembly (102, 102') comprising a magnetic resonance antenna with a first antenna portion (108, 108') and a second antenna portion (110, 110') for receiving magnetic resonance location data (1246) from a fiducial marker (118, 300, 400, 500). The magnetic resonance coil assembly further comprises a clamp with a first clamping portion (104, 104') and a second clamping portion (106, 106') operable for being moved between an open and a closed configuration. The first clamping portion comprises the first antenna portion. The second clamping portion comprises the second antenna portion. The first and second clamping portions are operable for securing the fiducial marker within a signal reception volume (111) in the closed configuration. When in the open position, the first and second clamping portions enable the fiducial marker being moved into or out of the signal reception volume.
    • 本发明提供具有磁共振线圈组件(102,102')的医疗设备(100),该磁共振线圈组件包括具有第一天线部分(108,108')和第二天线部分(110,110')的磁共振天线,用于 从基准标记(118,300,400,500)接收磁共振位置数据(1246)。 磁共振线圈组件还包括具有第一夹持部分(104,104')的夹具和可操作以在打开和闭合构型之间移动的第二夹持部分(106,106')。 第一夹持部分包括第一天线部分。 第二夹持部分包括第二天线部分。 第一和第二夹持部分可操作以将基准标记固定在关闭构造中的信号接收体积(111)内。 当处于打开位置时,第一和第二夹紧部分使得基准标记物被移入或移出信号接收体积。
    • 19. 发明申请
    • SELF-LEARNING DISTRIBUTED SYSTEM WITH AUTOMATED GROUND-TRUTH GENERATION
    • WO2021004924A1
    • 2021-01-14
    • PCT/EP2020/068791
    • 2020-07-03
    • KONINKLIJKE PHILIPS N.V.
    • SENEGAS, Julien, ThomasKRUEGER, Sascha
    • A61B6/00G16H50/00
    • In order to generate annotated ground truth data for training a machine learning model for inferring a desired scan configuration of an medical imaging system from an observed workflow scene during exam preparation, a system is provided that comprises a sensor data interface configured to access a measurement image of a patient positioned for an imaging examination. The measurement image is generated on the basis of sensor data obtained from a sensor arrangement, which has a field of view including at least part of an area, where the patient is positioned for imaging. The system further comprises a medical image data interface configured to access a medical image of the patient obtained from a medical imaging apparatus during the imaging examination. The patient is positioned in a given geometry with respect to a reference coordinate system of the medical imaging apparatus. The system further comprises an exam metadata interface configured to access exam metadata of the imaging examination. The system further comprises a processing unit, configured to determine an association between one or more features in the measurement image and one or more features extracted from the medical image and/or from the exam metadata by mapping a point in a coordinate system of the medical image to a point in a coordinate system of the measurement image. The system further comprises an output interface, configured to be coupled to a training set database for adding the measurement image comprising data that labels the one or more associated features in the measurement image to the training set database for training the machine learning model.