Manifold Learning for Image-Based Gating of Intravascular Ultrasound(IVUS) Pullback Sequences

Intravascular Ultrasound(IVUS) is an imaging technology which provides cross-sectional images of internal coronary vessel structures. The IVUS frames are acquired by pulling the catheter back with a motor running at a constant speed. However, during the pullback, some artifacts occur due to the beating heart. These artifacts cause inaccurate measurements for total vessel and lumen volume and limitation for further processing. Elimination of these artifacts are possible with an ECG (electrocardiogram) signal, which determines the time interval corresponding to a particular phase of the cardiac cycle. However, using ECG signal requires a special gating unit, which causes loss of important information about the vessel, and furthermore, ECG gating function may not be available in all clinical systems. To address this problem, we propose an image-based gating technique based on manifold learning. Quantitative tests are performed on 3 different patients, 6 different pullbacks and 24 diffe...

• Type: Journal
• Year: 2010
• Where: MIAR
• Authors: Gozde Gul Isguder, Gözde B. Ünal, Martin Groher, Nassir Navab, Ali Kemal Kalkan, Muzaffer Degertekin, Holger Hetterich, Johannes Rieber
• Keywords: Image-based Gating Technique, Internal Coronary Vessel, Medical Imaging, MIAR 2010, Special Gating Unit