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    • 4. 发明申请
    • IMPROVED ECG-BASED TRIGGERING FOR MAGNETIC RESONANCE IMAGING
    • 用于磁共振成像的改进的基于ECG的触发
    • WO2015018879A1
    • 2015-02-12
    • PCT/EP2014/066950
    • 2014-08-07
    • KONINKLIJKE PHILIPS N.V.
    • MÜHLSTEFF, JensCREEMERS, Roy Johannes Hendrikus GerardusPHILIPP, Julia
    • G01R33/567
    • G01R33/5673
    • A method of imaging, by means of magnetic resonance, at least a portion of a human or animal subject of interest (20) positioned in a static magnetic field, the method comprising: - taking measurements of electrocardiogram data; - generate vector cardiogram data from the electrocardiogram data; - determining at least one parameter of an acquisition period of acquiring magnetic resonance signals from the vector cardiogram data in order to synchronize measurement of magnetic resonance signals to a cyclic movement of the heart of the subject of interest (20); wherein the at least one parameter of the acquisition period is determined from an actual value of a discriminating function and a predetermined reference function, wherein for determining the at least one parameter of the acquisition period, a step of adapting at least one of the discriminating function and the predetermined reference function is executed, dependent on a breathing status of the human or animal subject of interest (20); and - a magnetic resonance imaging system (10) for acquisition of images of at least a portion of a human or animal subject of interest (20), synchronized to a cyclic movement of the heart of the subject of interest (20), comprising: - a control unit (28) for controlling functions of the magnetic resonance imaging system (10); - an image processing unit (34) provided for processing acquired magnetic resonance signals; - an electrocardiogram device (36) for taking measurements of electrocardiogram data of the heart of the subject of interest (20); - a synchronization unit (40) coupled to the electrocardiogram device (36) and configured for determining at least one parameter of an acquisition period from the vector cardiogram data, wherein the synchronization unit (40) is configured to provide trigger signals (60) indicative of the determined at least one parameter of the acquisition period to the control unit (28); and wherein the synchronization unit (40) is configured to adapt at least one of the discriminating function and the predetermined reference function, dependent on a breathing status of the human or animal subject of interest (20).
    • 通过磁共振成像位于静态磁场中的感兴趣的人或动物对象(20)的至少一部分的方法,所述方法包括: - 测量心电图数据; - 从心电图数据生成矢量心电图数据; - 从所述矢量心电图数据确定获取磁共振信号的采集周期的至少一个参数,以使磁共振信号的测量与感兴趣对象的心脏的循环运动(20)同步; 其中所述获取周期的所述至少一个参数是根据识别功能和预定参考功能的实际值确定的,其中为了确定所述获取周期的所述至少一个参数,调整所述识别功能中的至少一个的步骤 并且根据感兴趣的人或动物受试者的呼吸状态执行预定的参考功能(20); 以及 - 磁共振成像系统(10),用于采集与所述感兴趣对象(20)的心脏的循环运动同步的感兴趣的人或动物受试者(20)的至少一部分的图像,包括: - 用于控制所述磁共振成像系统(10)的功能的控制单元(28)。 - 提供用于处理获取的磁共振信号的图像处理单元(34) - 心电图装置(36),用于测量感兴趣对象的心脏的心电图数据(20); - 同步单元(40),耦合到所述心电图设备(36)并且被配置为从所述矢量心电图数据确定采集周期的至少一个参数,其中所述同步单元(40)被配置为提供指示 确定所述获取周期的至少一个参数到所述控制单元(28); 并且其中所述同步单元(40)被配置为根据感兴趣的人或动物对象的呼吸状态(20)来适应所述识别功能和所述预定参考功能中的至少一个。
    • 10. 发明申请
    • SYSTEM AND METHOD FOR BREATHING RATE MEASUREMENTS
    • 用于呼吸速率测量的系统和方法
    • WO2014057399A1
    • 2014-04-17
    • PCT/IB2013/059091
    • 2013-10-03
    • KONINKLIJKE PHILIPS N.V.
    • MÜHLSTEFF, Jens
    • A61B5/00A61B5/08A61B5/022
    • A61B5/0205A61B5/022A61B5/0816A61B5/6824A61B5/7278A61B8/08
    • A device (100) for monitoring a subject's breathing rate is disclosed. A transducer (107) radiates energy towards the chest of a subject and receives the reflected energy. An analyzer (105) receives a signal corresponding to the reflected energy. The reflected energy would have undergone Doppler frequency shifts due to the motion of the chest of the subject due to breathing, with reference to the transducer. The analyzer (105) analyzes the signal to calculate the breathing rate by measuring at least one of a periodicity of the signal and a number of cycles per unit time of the signal. In a preferred embodiment the transducer (107) is disposed in or on a sphygmomanometer cuff to radiate energy towards the chest of the subj ect and receive the energy reflected by the chest of the subject.
    • 公开了一种用于监测受试者的呼吸频率的装置(100)。 换能器(107)朝向受试者的胸部辐射能量并接收反射的能量。 分析器(105)接收对应于反射能量的信号。 参考传感器,反射的能量将由于呼吸引起的受试者胸部的运动而经历多普勒频移。 分析器(105)通过测量信号的周期和信号的每单位时间的周期数中的至少一个来分析信号以计算呼吸率。 在优选实施例中,换能器(107)设置在血压计袖带中或上方,以朝向受试者的胸部辐射能量,并且接收受试者胸部反射的能量。