REAL TIME CONSTRAINED MOTION ESTIMATION FOR ECG-GATED CARDIAC MRI

被引：2

作者：

Roujol, S. ^{[1
,2
]}

Benois-Pineau, J. ^{[2
]}

de Senneville, B. Denis ^{[1
]}

Quesson, B. ^{[1
]}

Ries, M. ^{[1
]}

Moonen, C. ^{[1
]}

机构：

[1] Univ Bordeaux 2, CNRS, UMR 5231, IMF, 146 Rue Leo Saignat, F-33076 Bordeaux, France

[2] Univ Bordeaux 1, CNRS, UMR 5800, LaBRI, F-33405 Talence, France

来源：

2010 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING | 2010年

关键词：

Motion compensation; Biomedical image processing; Real time systems; Magnetic resonance imaging; OPTICAL-FLOW;

D O I：

10.1109/ICIP.2010.5652090

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Continuous magnetic resonance (MR) imaging is a promising tool for image-guided cardiac interventions. However, cardiac imaging is complicated by both, cardiac and respiratory motion. While the former is commonly addressed by cardiac gating, the latter requires a real time motion compensation. Here, a new image based motion estimation is proposed, extending the initial Horn & Schunck optical flow approach by an additional regularization term. This term allows to integrate displacement of physiological landmarks, which are obtained in a preparation step using pattern matching. The proposed method was evaluated on the left ventricle (LV) of cardiac MR-images and showed a better estimation accuracy compared to the original Horn & Schunck approach.

引用

页码：757 / 760

页数：4

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