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1. 发明授权

US06425864B1 Method and apparatus for optimal imaging of the peripheral vasculature 有权
标题翻译：用于外周脉管系统最佳成像的方法和装置
公开(公告)号：US06425864B1
公开(公告)日：2002-07-30
申请号：US09292548
申请日：1999-04-15
申请人： Thomas K. F. Foo , Vincent B. Ho , Rebecca A. McCann
发明人： Thomas K. F. Foo , Vincent B. Ho , Rebecca A. McCann
IPC分类号： A61B5055
CPC分类号： G01R33/563 , G01R33/281
摘要： A system and method for optimally imaging the peripheral vasculature is disclosed which includes defining a given number of scan stations along a patient's peripheral vasculature and initially injecting a relatively small amount of contrast agent into the patient to pass a test bolus through the patient's peripheral vasculature, and thereafter tracking the test bolus through the patient and adjusting the patient on a moveable table within the MR imaging device from one scan station to a next station to determine a maximum travel time that the test bolus takes to travel through each of the given number of scan stations. Additional contrast agent is then injected into the patient to pass an exam bolus through the patient's peripheral vasculature, and using the test bolus travel time, MR data can be acquired from each scan station while it is known that the exam bolus is present in that station to optimize image resolution. Initially, central k-space data is acquired for each scan station, and if time permits, the higher spatial frequency k-space data can be acquired. Otherwise, once the central k-space data is acquired for each station, the patient table is adjusted to the scan stations that require additional data acquisition. Similarly, if there is time remaining after all MR data is acquired for a particular scan station, the patient table can be moved to a previous scan station to acquire additional data in that station before moving to a subsequent scan station to acquire the central k-space data when the exam bolus arrives in that particular scan station.
摘要翻译：公开了一种用于对外围脉管系统进行最佳成像的系统和方法，其包括沿着患者的外周脉管系统定义给定数量的扫描站，并且首先将相对少量的造影剂注射到患者中以使测试推注通过患者的外周脉管系统，然后通过患者跟踪测试团块并将患者调整在MR成像设备内的可移动台上，从一个扫描站到下一个站，以确定测试弹丸穿过每个给定数量的扫描站。然后将另外的造影剂注射到患者中以通过患者的外周脉管系统进行检查推注，并且使用测试推注旅行时间，可以从每个扫描站获取MR数据，同时已知该测试团存在于该站以优化图像分辨率。首先，针对每个扫描站获取中心k空间数据，并且如果时间允许，则可以获取较高的空间频率k空间数据。否则，一旦为每个站获取中心k空间数据，则将患者表调整到需要附加数据采集的扫描站。类似地，如果在针对特定扫描站获取所有MR数据之后剩余时间，则可以将患者表移动到先前的扫描站以在移动到随后的扫描站以获取中央k-位之前获取该站中的附加数据，考试团到达该特定扫描站时的空间数据。

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