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    • 5. 发明申请
    • MR IMAGING GUIDED THERAPY
    • 成像指导治疗
    • WO2010140086A1
    • 2010-12-09
    • PCT/IB2010/052357
    • 2010-05-27
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.RAJU, Balasundara, I.ANAND, AjayEHNHOLM, Gosta, Jakob
    • RAJU, Balasundara, I.ANAND, AjayEHNHOLM, Gosta, Jakob
    • A61N7/02A61N5/067A61N1/40
    • A61N7/02A61B2017/00084A61B2090/374
    • The invention relates to a therapeutic system comprising: a MR imaging unit arranged to acquire MR signals from a body (10) of a patient positioned in an examination volume, a thermal treatment unit (19, 20) for the deposition of thermal energy within tissue of the body (10). It is an object of the invention to enable continuous temperature monitoring based on MR thermometry even in a situation in which the focus of the thermal treatment is moved. To this end, the invention proposes that the system is arranged to perform the steps of: a) initiating thermal treatment by heating the tissue of the body (10) at the position of a focus within the examination volume, b) selective acquisition of MR signals from a first image plane (24), the position of the focus of the thermal treatment being located within the first image plane (24), c) reconstruction of a thermographic MR image from the MR signals acquired from the first image plane (24), d) computing a baseline thermographic MR image from the temperature distribution within at least one second image plane (25, 26, 27) being different from the first image plane (24), e) moving the focus of the thermal treatment to a new position within the examination volume, f) changing the position and/or orientation of the first image plane (24) corresponding to the new position of the focus of the thermal treatment, g) repeating steps b) and c), wherein the baseline thermographic MR image computed in step d) is used for thermographic image reconstruction in subsequent step c).
    • 本发明涉及一种治疗系统,包括:MR成像单元,其布置成从位于检查体积中的患者的身体(10)获取MR信号;热处理单元(19,20),用于在组织内沉积热能 的身体(10)。 本发明的目的是即使在热处理的焦点移动的情况下也能够基于MR测温进行连续温度监测。 为此,本发明提出,该系统被设置为执行以下步骤:a)通过在检查体积内的焦点位置加热身体(10)的组织来启动热处理,b)选择性地获取MR 来自第一图像平面(24)的信号,热处理的焦点的位置位于第一图像平面(24)内,c)从从第一图像平面(24)获取的MR信号重建热成像MR图像 ),d)从与第一图像平面(24)不同的至少一个第二图像平面(25,26,27)内的温度分布计算基线热成像MR图像,e)将热处理的焦点移动到 在检查体积内的新位置,f)改变对应于热处理焦点的新位置的第一图像平面(24)的位置和/或取向,g)重复步骤b)和c),其中基线 热成像MR图像计算 步骤d)中的d用于后续步骤c)中的热成像图像重建。