Therapeutic apparatus
    1.
    发明公开
    Therapeutic apparatus 审中-公开
    治疗Vorrichtung

    公开(公告)号:EP2343103A1

    公开(公告)日:2011-07-13

    申请号:EP10150499.1

    申请日:2010-01-12

    摘要: The invention provides for a therapeutic apparatus comprising a tissue heating system (302, 480, 482). The therapeutic apparatus further comprises a magnetic resonance imaging system (300) for acquiring magnetic resonance thermometry data (366) from nuclei of a subject (318) located within an imaging volume (330). The therapeutic apparatus further comprises a radiation therapy system (304, 592) for irradiating an irradiation volume (316, 516) of the subject, wherein the irradiation volume is within the imaging volume. The therapeutic apparatus further comprises a controller (354) for controlling the therapeutic apparatus. The controller is adapted for acquiring (100, 210) magnetic resonance thermometry data repeatedly using the magnetic resonance imaging system. The controller is adapted for heating (102, 208) at least the irradiation volume using the tissue heating system. The heating is controlled using the magnetic resonance thermometry data. The controller is adapted for irradiating (104, 208) the irradiation volume.

    摘要翻译: 本发明提供一种包括组织加热系统(302,480,482)的治疗设备。 治疗装置还包括用于从位于成像体积(330)内的对象(318)的核获取磁共振测温数据(366)的磁共振成像系统(300)。 治疗装置还包括用于照射受试者的照射体积(316,516)的放射治疗系统(304,592),其中照射体积在成像体积内。 治疗装置还包括用于控制治疗仪的控制器(354)。 控制器适于使用磁共振成像系统重复地获取(100,210)磁共振测温数据。 控制器适于使用组织加热系统加热(102,208)至少照射体积。 使用磁共振测温数据来控制加热。 控制器适于照射(104,208)照射体积。

    MR imaging with B1 mapping
    2.
    发明公开
    MR imaging with B1 mapping 审中-公开
    MR-Bildgebung mit B1-Kartierung

    公开(公告)号:EP2615470A1

    公开(公告)日:2013-07-17

    申请号:EP12150929.3

    申请日:2012-01-12

    IPC分类号: G01R33/24

    摘要: The invention relates to a method of MR imaging, wherein a portion of a body placed in the examination volume of a MR device is subjected to an imaging sequence of RF pulses and switched magnetic field gradients. The imaging sequence is a stimulated echo sequence including i) two preparation RF pulses (α) radiated toward the portion of the body during a preparation period (21), and ii) reading RF pulses (β) radiated toward the portion of the body during an acquisition period (22) temporally subsequent to the preparation period (21). FID signals (I 1 ) and stimulated echo signals (I 2 ) are acquired during the acquisition period (22). A B 1 map indicating the spatial distribution of the RF field of the RF pulses within the portion of the body is derived from the acquired FID (I 1 ) and stimulated echo (I 2 ) signals.

    摘要翻译: 本发明涉及一种MR成像方法,其中放置在MR装置的检查体积中的身体的一部分受到RF脉冲和切换磁场梯度的成像序列的影响。 成像序列是受激回波序列,其包括i)在准备期间(21)期间向身体部分辐射的两个准备RF脉冲(±),以及ii)读取朝向身体部分辐射的RF脉冲(²) 在准备期间(21)之后的临时收购期间(22)。 在采集周期(22)期间获取FID信号(I 1)和受激回波信号(I 2)。 从获取的FID(I 1)和受激回波(I 2)信号中导出表示身体部分内的RF脉冲的RF场的空间分布的B 1图。

    Magnetic resonance imaging system with a fixed output amplitude transmitter
    3.
    发明公开
    Magnetic resonance imaging system with a fixed output amplitude transmitter 审中-公开
    Magnetresonanzbildgebungssystem mit einem Sender mit fester Ausgangsamplitude

    公开(公告)号:EP2544017A1

    公开(公告)日:2013-01-09

    申请号:EP11172486.0

    申请日:2011-07-04

    IPC分类号: G01R33/36

    摘要: The invention relates to a magnetic resonance imaging system for acquiring magnetic resonance data from a subject within an imaging volume. The magnetic resonance imaging system comprises a transmitter for generating radio-frequency pulses (708) for exciting atomic nuclei within the imaging volume using a radio-frequency antenna. The transmitter has a fixed output amplitude and a modulated output. The transmitter is configured to generate the radio-frequency pulses by switching radio-frequency emissions at the fixed output amplitude on and off. The transmitter is further configured to generate the radio-frequency pulses by controlling the modulated output. The magnetic resonance imaging system further comprises a receiver for receiving radio-frequency emissions from the excited atomic nuclei using the radio-frequency antenna.

    摘要翻译: 本发明涉及一种用于从成像体内的对象获取磁共振数据的磁共振成像系统。 磁共振成像系统包括用于使用射频天线产生用于激发成像体内的原子核的射频脉冲(708)的发射器。 发射机具有固定的输出幅度和调制输出。 发射机被配置为通过以固定的输出幅度开启和关闭来切换射频发射来产生射频脉冲。 发射机还被配置为通过控制调制输出来产生射频脉冲。 磁共振成像系统还包括用于使用射频天线从激发的原子核接收射频发射的接收器。

    MR image reconstruction using prior information-constrained regularization
    4.
    发明公开
    MR image reconstruction using prior information-constrained regularization 审中-公开
    MR-Bildrekonstruktion mit erzwungener Regelung vor der Information

    公开(公告)号:EP2503349A1

    公开(公告)日:2012-09-26

    申请号:EP11159494.1

    申请日:2011-03-24

    摘要: The invention relates to a method of MR imaging of at least a portion of a body (10) of a patient placed in an examination volume of a MR device (1), the method comprising the steps of:
    - subjecting the portion of the body (10) to a first imaging sequence for acquiring a first signal data set (21);
    - subjecting the portion of the body (10) to a second imaging sequence for acquiring a second signal data set (23), wherein the imaging parameters of the second imaging sequence differ from the imaging parameters of the first imaging sequence;
    - reconstructing a MR image from the second signal data set (23) by means of regularization using the first signal data set (21) as prior information. Moreover, the invention relates to a MR device (1) and to a computer program for a MR device (1).

    摘要翻译: 本发明涉及放置在MR装置(1)的检查体积中的患者的身体(10)的至少一部分的MR成像方法,该方法包括以下步骤: - 对身体的部分 (10)到用于获取第一信号数据集(21)的第一成像序列; - 对所述身体(10)的所述部分进行第二成像序列以获取第二信号数据集(23),其中所述第二成像序列的成像参数与所述第一成像序列的成像参数不同; - 通过使用第一信号数据集(21)的正则化作为先前信息,从第二信号数据集(23)重建MR图像。 此外,本发明涉及MR装置(1)和用于MR装置(1)的计算机程序。

    MAGNETIC RESONANCE DEVICE AND METHOD FOR PROPELLER MRI
    5.
    发明公开
    MAGNETIC RESONANCE DEVICE AND METHOD FOR PROPELLER MRI 审中-公开
    Magnetresonanzvorrichtung und -verfahrenfürPROPELLER MRI

    公开(公告)号:EP2806284A1

    公开(公告)日:2014-11-26

    申请号:EP14172087.0

    申请日:2008-04-22

    摘要: The invention relates to a device for MRI of a body (7) placed in an examination volume. The device (1) comprises means (2) for establishing a substantially homogeneous main magnetic field in the examination volume, means (3, 4, 5) for generating switched magnetic field gradients superimposed upon the main magnetic field, means (6) for radiating RF pulses towards the body (7), control means (12) for controlling the generation of the magnetic field gradients and the RF pulses, means (10) for receiving and sampling MR signals, and reconstruction means (14) for forming MR images from the signal samples. According to the invention, the device (1) is arranged to acquire an MR reference data set from a central portion of k-space prior to a multi-slice PROPELLER acquisition.

    摘要翻译: 本发明涉及放置在检查体积中的身体(7)的MRI装置。 装置(1)包括用于在检查体积中建立基本均匀的主磁场的装置(2),用于产生叠加在主磁场上的开关磁场梯度的装置(3,4,5),用于辐射的装置(6) 朝向身体(7)的RF脉冲,用于控制磁场梯度和RF脉冲的产生的控制装置(12),用于接收和采样MR信号的装置(10)和用于形成MR图像的重建装置(14) 信号样本。 根据本发明,设备(1)被布置成在多层螺旋桨获取之前从k空间的中心部分获取MR参考数据集。