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Rui Liao's work on patient-specific 3-D model guidance for interventional and hybrid-operating-room applications 被引量:1
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作者 Rui Liao,Siemens Corporate Research,755 College Road East,Princeton,NJ 08540,United States 《World Journal of Radiology》 CAS 2011年第6期159-168,共10页
Compared to surgery,interventional and hybrid-operating-room(OR) approaches diagnose or treat pathology with the most minimally invasive techniques possible.By minimizing the physical trauma to the patient,peripheral ... Compared to surgery,interventional and hybrid-operating-room(OR) approaches diagnose or treat pathology with the most minimally invasive techniques possible.By minimizing the physical trauma to the patient,peripheral or hybrid approaches can reduce infection rates and recovery time as well as shorten hospital stays.Minimally invasive approaches therefore are the trend and often the preferred choice,and may even be the only option for the patients associated with high surgery risks.Common interventional imaging modalities include 2-D X-ray fluoroscopy and ultrasound.However,fluoroscopic images do not display the anatomic structures without a contrast agent,which on the other hand,needs to be minimized for patients' safety.Ultrasound images suffer from relatively low image quality and tissue contrast problems.To augment the doctor's view of the patient's anatomy and help doctors navigate the devices to the targeted area with more confidence and a higher accuracy,high-resolution pre-operative volumetric data such as computed tomography and/or magnetic resonance can be fused with intra-operative 2-D images during interventions.A seamless workflow and accurate 2-D/3-D registrationas well as cardiac and/or respiratory motion compensation are the key components for a successful image guidance system using a patient-specific 3-D model.Dr.Liao's research has been focused on developing methods and systems of 3-D model guidance for various interventions and hybrid-OR applications.Dr.Liao' s work has led to several Siemens products with high clinical and/or market impact and a good number of scientific publications in leading journals/conferences on medical imaging. 展开更多
关键词 Angiography and FLUOROSCOPY Augmented reality Hybrid-operating-room APPLICATIONS Imageguided interventions motion compensation 2-d/3-d fusion 2-d/3-d registration X-ray
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基于二维关节型人体模型和EM算法的人体跟踪(英文)
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作者 Thomas S.Huang 《自动化学报》 EI CSCD 北大核心 2003年第3期332-344,共13页
提出一种跟踪单眼图像序列中的行人 ,并恢复其运动参数的新方法 .在跟踪中采用了基于SPM (ScaledPrismatModel)扩展的二维纸板人模型取代三维人体模型 ,以获取更快的计算速度 .作者使用EM算法在概率框架下进行运动估计 ,同时 ,算法也考... 提出一种跟踪单眼图像序列中的行人 ,并恢复其运动参数的新方法 .在跟踪中采用了基于SPM (ScaledPrismatModel)扩展的二维纸板人模型取代三维人体模型 ,以获取更快的计算速度 .作者使用EM算法在概率框架下进行运动估计 ,同时 ,算法也考虑了混合的运动模型和运动约束 ,以减小解的搜索空间 . 展开更多
关键词 人体跟踪 二维关节型人体模型 EM算法 运动参数 图像序列 运动模型
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