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1. 发明授权

US6154516A Cardiac CT system 失效
标题翻译：心脏CT系统
公开(公告)号：US6154516A
公开(公告)日：2000-11-28
申请号：US157028
申请日：1998-09-18
申请人： Dominic Heuscher , Shalabh Chandra , Raj Shekhar , Dave Hoffmeyer
发明人： Dominic Heuscher , Shalabh Chandra , Raj Shekhar , Dave Hoffmeyer
IPC分类号： A61B6/00 , A61B6/03 , G01N23/083
CPC分类号： A61B6/541 , A61B6/032 , A61B6/481 , A61B6/488 , A61B6/503 , A61B6/504 , A61B6/027 , Y10S378/901
摘要： A cardiac gated spiral CT scanner (10) has a source of penetrating radiation (20) arranged for rotation about an examination region (14) having a central axis extending in a z direction. The source (20) emits a beam of radiation (22) that passes through the examination region (14) as the source (20) rotates. A patient support (30) holds a patient within the examination region (14) and translates the patient through the examination region (14) in the z direction while this source (20) is rotated such that the source (20) follows a helical path relative to the patient. A control processor (90) implements a patient-specific scan protocol in response to measured patient characteristics (for example, the patient's heart rate, the patient's breath hold time, and/or the range of coverage in the z direction based on the patient's anatomy) and scanner characteristics (for example, the number of detector rings, and/or the scan rate). Radiation detectors (40) are arranged to receive radiation from the source (20) after it has traversed the examination region (14). An ECG monitor (80) acquires ECG data from the patient. The ECG data is used to correlate phases of the patient's heart with data collected by the radiation detectors (40). An image reconstruction processor (60) reconstructs image representations of the patient based on data received from the radiation detectors (40) and ECG monitor (80). A human viewable display (70) selectively displays the image representations for assessing cardiac function.
摘要翻译：心脏门控螺旋CT扫描器（10）具有穿透辐射源（20），其布置成围绕具有在z方向上延伸的中心轴线的检查区域（14）旋转。当源（20）旋转时，源（20）发射穿过检查区域（14）的辐射束（22）。病人支撑件（30）将患者保持在检查区域（14）内，并且在该源（20）旋转时使患者通过检查区域（z）在z方向上平移，使得源（20）遵循螺旋路径相对于患者。控制处理器（90）响应于测量的患者特征（例如，患者的心率，患者的呼吸保持时间，和/或基于患者的解剖结构在z方向上的覆盖范围）实施患者特异性扫描方案）和扫描仪特性（例如，检测器环的数量和/或扫描速率）。辐射检测器（40）被布置成在源（20）穿过检查区域（14）之后接收来自源（20）的辐射。 ECG监测器（80）从患者获取ECG数据。 ECG数据用于将患者心脏的相位与辐射检测器（40）收集的数据相关联。图像重建处理器（60）基于从辐射检测器（40）和ECG监视器（80）接收的数据来重建患者的图像表示。人类可视显示器（70）选择性地显示用于评估心脏功能的图像表示。

2. 发明授权

US06505065B1 Methods and apparatus for planning and executing minimally invasive procedures for in-vivo placement of objects 有权
标题翻译：用于规划和执行体内放置物体的微创程序的方法和装置
公开(公告)号：US06505065B1
公开(公告)日：2003-01-07
申请号：US09697805
申请日：2000-10-27
申请人： Jeffrey H. Yanof , Paul Klahr , Andy Ivan , Dave Hoffmeyer
发明人： Jeffrey H. Yanof , Paul Klahr , Andy Ivan , Dave Hoffmeyer
IPC分类号： A61B5055
CPC分类号： A61N5/103 , A61B6/584 , A61B34/10 , A61B90/10 , A61B90/36 , A61N5/1027
摘要： A method (310) and apparatus (1) are provided for planning an executing minimally invasive procedures for in-vivo placement of objects within the body of a patient. The method and apparatus enable non-invasive pre-operation virtual seed placement and dose distribution planning using visualization information showing a patient's anatomy together with a set of single point targets (182) within the patient's body and a corresponding set of trajectories (184) through the skin and body of the patient leading to the selected target points. For enhanced visualization, multiplanar reformatted images (166, 168) are derived from CT image data sets and are angled to always contain the plane of the virtual needle (300) in the pseudo-axial image and its 90 degree slice counterpart. In an implementation stage, a stereotactic arm (40) spatially referenced to the patient's data set acts a needle guide (52) and is used to locate preplanned image planes containing virtual seed deposition points. A physical needle (50) is aligned with preplanned virtual needle trajectories (282, 284, 286) so that one or more seeds or other objects can be precisely placed within the patient's body.
摘要翻译：提供了一种方法（310）和装置（1），用于规划用于体内放置患者体内的物体的执行的微创程序。该方法和装置使得能够使用可视化信息显示患者解剖结构的无创术前操作虚拟种子放置和剂量分布规划以及患者体内的一组单点目标（182）和相应的一组轨迹（184）通过导致选定目标点的患者的皮肤和身体。为了增强可视化，多平面重新格式化图像（166,168）从CT图像数据集导出，并且成角度以在伪轴图像及其90度切片对应物中始终包含虚拟针（300）的平面。在实施阶段中，以空间参考患者数据集的立体定向臂（40）作用于针引导件（52），并用于定位包含虚拟种子沉积点的预先计划的图像平面。物理针（50）与预先计划的虚拟针轨迹（282,284,286）对准，使得一个或多个种子或其他物体可以精确地放置在患者体内。

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