专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20050015004A1 Systems and methods for combining an anatomic structure and metabolic activity for an object 审中-公开
标题翻译：用于组合对象的解剖结构和代谢活动的系统和方法
公开(公告)号：US20050015004A1
公开(公告)日：2005-01-20
申请号：US10621667
申请日：2003-07-17
申请人： Sarah Hertel , Mark Limkeman , Robert Young , Robert Milnes
发明人： Sarah Hertel , Mark Limkeman , Robert Young , Robert Milnes
IPC分类号： G01T1/161 , A61B6/03 , G06T1/00 , A61B5/05
CPC分类号： A61B6/032 , A61B6/037 , A61B6/4085 , A61B6/466 , A61B6/5235 , A61B8/463
摘要： A method for combining an anatomic structure and metabolic activity for an object is described. The method includes acquiring a first set of images by scanning the object using a first modality, acquiring a second set of images by scanning the object using a second modality, fusing the first and second sets of images to form a fused volume, identifying a region of interest (ROI) in the fused volume, the ROI corresponding to an organ of interest of the object, and providing a viewing path through the fused volume at least partially following the ROI.
摘要翻译：描述了用于组合解剖结构和用于对象的代谢活动的方法。该方法包括通过使用第一模式扫描对象来获取第一组图像，通过使用第二模式扫描对象来获取第二组图像，将第一组图像和第二组图像融合以形成融合体积，识别区域感兴趣的（ROI），ROI对应于对象的感兴趣的器官，以及提供至少部分跟随ROI的融合卷的观看路径。

2. 发明申请

US20070287904A1 Method and apparatus for determining a hemodynamic response function for event-related functional magnetic resonance imaging 审中-公开
标题翻译：用于确定事件相关功能磁共振成像的血液动力学响应函数的方法和装置
公开(公告)号：US20070287904A1
公开(公告)日：2007-12-13
申请号：US11788586
申请日：2007-04-20
申请人： Yu Li , Mark Limkeman
发明人： Yu Li , Mark Limkeman
IPC分类号： A61B5/055
CPC分类号： G01R33/4806 , A61B5/055 , A61B5/7257 , G01R33/58
摘要： Embodiments of the subject invention can involve a method of suppressing noise in hemodynamic deconvolution for event-related functional MR imaging (ER-fMRI). A typical ER-fMRI experiment measures the Blood Oxygenation Level Dependent (BOLD) response to a series of sparse, short-duration stimuli. Based on the deconvolution of a hemodynamic response function (HRF) from the BOLD signal and event stimulus function, the neuronal activation can be localized to specific brain regions and tracked on the order of a second. ER-fMRI can be used to study the temporal dynamics of neuronal network. However, in certain situations, aliasing noise can be generated in hemodynamic deconvolution due to the low sampling rate limited by the imaging speed. This aliasing noise can reduce the accuracy of temporal characterization of the HRF. In an embodiment, by incorporating the use of a phantom having one or more coil loops positioned perpendicular to the magnetic field Bo, such that DC current inputted into one of the loops will produce field distortion to Bo, an ER-fMRI experiment can be calibrated and the temporal measurement of HRF can be improved with the removal of aliasing noise.
摘要翻译：本发明的实施例可以涉及一种抑制事件相关功能MR成像（ER-fMRI）的血流动力学去卷积噪声的方法。典型的ER-fMRI实验测量血液氧合水平依赖（BOLD）对一系列稀疏，短期刺激的反应。基于来自BOLD信号和事件刺激函数的血液动力学响应函数（HRF）的去卷积，神经元激活可以被定位到特定的脑区域并以一秒的顺序进行跟踪。 ER-fMRI可用于研究神经元网络的时间动力学。然而，在某些情况下，由于由成像速度限制的低采样率，可以在血流动力学反卷积中产生混叠噪声。这种混叠噪声可以降低HRF的时间表征的准确性。在一个实施例中，通过结合使用具有垂直于磁场B 0的一个或多个线圈环的体模，使得输入到一个环路中的DC电流将产生场失真到B < 可以校准ER-fMRI实验，并且可以通过去除混叠噪声来改善HRF的时间测量。

3. 发明申请

US20050156112A1 Crystal-based coincidence timing calibration method 失效
标题翻译：基于晶体的巧合定时校准方法
公开(公告)号：US20050156112A1
公开(公告)日：2005-07-21
申请号：US11028270
申请日：2005-01-03
申请人： John Williams , Dershan Luo , Mark Limkeman , Michael Cook , David McDaniel , Edwin Oswalt , Mark Feilen
发明人： John Williams , Dershan Luo , Mark Limkeman , Michael Cook , David McDaniel , Edwin Oswalt , Mark Feilen
IPC分类号： G01T1/161 , G01T1/164 , G01T1/172 , G01T1/29
CPC分类号： G01T1/2985
摘要： A method of calibrating detectors in a detector ring of a PET scanner, each detector including a plurality of crystals, the PET scanner having a field of view, is disclosed. The method comprises collecting timing data indicative of coincidence events occurring between each pair of crystals within the field of view. The method further comprises determining a detector adjustment value for each detector, determining a crystal adjustment value for each crystal in each detector, and discretizing the crystal adjustment value for each crystal to produce a discretized crystal adjustment value for each crystal. Lastly, the method comprises calibrating each detector by applying the discretized crystal adjustment value for each crystal in each detector to the collected timing data indicative of coincidence events.
摘要翻译：公开了一种校准PET扫描器的检测器环中的检测器的方法，每个检测器包括多个晶体，PET扫描器具有视野。该方法包括收集指示在视场内的每对晶体之间发生的重合事件的定时数据。该方法还包括确定每个检测器的检测器调整值，确定每个检测器中的每个晶体的晶体调整值，以及离散每个晶体的晶体调整值以产生每个晶体的离散晶体调节值。最后，该方法包括通过将每个检测器中的每个晶体的离散晶体调整值应用于指示符合事件的收集的定时数据来校准每个检测器。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式