Prospective self-gating for simultaneous compensation of cardiac and respiratory motion
نویسندگان
چکیده
منابع مشابه
Prospective self-gating for simultaneous compensation of cardiac and respiratory motion.
Segmented cardiac acquisitions generally require the use of an electrocardiogram (ECG) in combination with a breathhold or a respiratory navigator placed on the diaphragm. These techniques necessitate patient cooperation and increase the complexity of cardiac imaging. The ECG signal may be distorted inside the magnet by interferences from radiofrequency and gradient action. Breathhold acquisiti...
متن کاملThree-dimensional Whole-Heart Cine MRI using Prospective Self-Gating for Compensation of Cardiac and Respiratory Motion
Introduction: Two-dimensional (2D) breath-hold and ECG-triggered cine MRI is frequently used to assess cardiac function. However this technique requires cooperation from the patient, and the MR acquisition has to be synchronized with the cardiac cycle using ECG. To control respiratory motion, the subject has to perform breath-holds or the position of the diaphragm has to be tracked using a resp...
متن کاملImproved cardiac motion self-gating
Background Cardiac motion self-gating is a technique where MRI signal is used to derive motion triggers instead of ECG, which might be problematic in high B0 field or cases where ECG is not accessible (e.g. fetal cardiac imaging). However, the performance of existing cardiac self-gating approaches have not yet enabled clinical utility. We propose and evaluate here a novel cardiac self-gating st...
متن کاملMotion Estimation Model for Cardiac and Respiratory Motion Compensation
Catheter ablation is widely accepted as the best remaining option for the treatment of atrial fibrillation if drug therapy fails. Ablation procedures can be guided by 3-D overlay images projected onto live fluoroscopic X-ray images. These overlay images are generated from either MR, CT or C-Arm CT volumes. As the alignment of the overlay is often compromised by cardiac and respiratory motion, m...
متن کاملSimple Self-Gating for Compensation of Respiratory Motion using a Spiral k-Space Trajectory
Introduction: External respiratory monitoring is required for most MRI exams of the body and is typically achieved either through the use of a respiratory belt, which wraps around the torso and measures displacement of the chest/abdomen, or an 1D/2D navigator measurement. Whilst belts take some time to setup, can drift, and are on occasion not reliable enough (e.g. children or uncooperative pat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2008
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.21697