1 / 10

Free-Breathing Cardiac MRI

This study explores a new approach for free-breathing cardiac MRI using MRI signal-based gating, enabling long-duration acquisition without additional sensors. The methods and results are discussed, highlighting the potential for diagnosing pathological cases and improving imaging accuracy.

lbessie
Download Presentation

Free-Breathing Cardiac MRI

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Free-Breathing Cardiac MRI IlyasUyanik, Peggy Lindner, • Dipan Shah (M.D.)*, NicolaosTsekos#, Karen Chin* • IoannisPavlidis#

  2. Motivation • Motivation • Methods • Results • Conclusion • Cardiac MRI (Magnetic Resonance Imaging) • Evaluate the anatomy and function of the heart • Diagnose pathological cases (e.g., low ejection fraction and fibrillation) • Existing methods • Breath-hold acquisition (does not allow for long duration acquisition) • Free-breathing acquisition with ECG and/or Peripheral Gating • Goals • Free-breathing acquisition using MRI signal based Gating • Record long duration cardiac MRI without additional sensors

  3. Methods Overview • Motivation • Methods • Results • Conclusion • Methods Overview • Indexing • Visualization MRI Image Wavelet 1D Signal Reconstruction ROI Wavelet Energy Left Ventricle Indexing Waveforms Extraction Level Set Phase 1 Phase 2 Phase 3

  4. Indexing • Motivation • Methods • Results • Conclusion • Methods Overview • Indexing • Visualization Threshold on breathing MRI Indexed MRI

  5. Visualization • Motivation • Methods • Results • Conclusion • Methods Overview • Indexing • Visualization

  6. Validation • Motivation • Methods • Results • Conclusion • Ground Truth Comparison • Extracted Signals • Ground Truth obtained by manually marking points on the left ventricle outer boundary

  7. Surface Area • Motivation • Methods • Results • Conclusion • Ground Truth Comparison • Extracted Signals

  8. Cardiac Cycle • Motivation • Methods • Results • Conclusion • Ground Truth Comparison • Extracted Signals

  9. Breathing Cycle • Motivation • Methods • Results • Conclusion • Ground Truth Comparison • Extracted Signals

  10. Conclusion • Motivation • Methods • Results • Conclusion - Free-breathing acquisition using MRI signal itself - Segmentation method is promising - Breathing and pulse signals extracted for indexing • Future work - 3D Imaging modality • Experiments on normal/ abnormal pathological cases from volume over time

More Related