Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Phased array ghost elimination.

Peter Kellman1, Elliot R McVeigh

  • 1Laboratory of Cardiac Energetics, National Institutes of Health, National Heart, Lung and Blood Institute, Bethesda, MD 20892-1061, USA. kellman@nih.gov

NMR in Biomedicine
|May 18, 2006
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Incremental Prognostic Impact of Quantitative Perfusion CMR and T1 Mapping in Patients with Heart Failure.

Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance·2026
Same author

Singular Value Decomposition-Based Coil Combination Improves the Accuracy and Noise-Robustness of Quantitative Susceptibility Maps.

medRxiv : the preprint server for health sciences·2026
Same author

Endotype-informed therapy and effects on illness perception and psychological health in patients with chest pain and no obstructive coronary artery disease.

European heart journal. Quality of care & clinical outcomes·2026
Same author

Microstructural disease and hypoperfusion in dilated cardiomyopathy underpin midwall septal fibrosis.

Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance·2026
Same author

Exploration of Arrhythmia Burden in Cardiac Amyloidosis Using Implantable Loop Recorders: The EXCALIBUR Study.

Journal of the American College of Cardiology·2026
Same author

Non-invasive endotyping improves treatment satisfaction and prescribing appropriateness in patients with angina and no obstructive coronary artery disease.

Open heart·2026
Same journal

Reproducibility of Splanchnic Blood Flow Measured Using Phase-Contrast MRI.

NMR in biomedicine·2026
Same journal

Restriction-Weighted Q-Space Trajectory Imaging (ResQ): Toward Mapping Diffusion-Time Effects With Tensor-Valued Diffusion Encoding in Human Prostate Cancer Xenografts.

NMR in biomedicine·2026
Same journal

In Vivo Quantitative Detection of PEGylated Macromolecules by Magnetic Resonance Spectroscopy.

NMR in biomedicine·2026
Same journal

Metabolic Assessment in Human Pluripotent Stem Cell-Derived Cerebral Organoids Using HR-MAS NMR Spectroscopy.

NMR in biomedicine·2026
Same journal

Characterizing Metabolic and Compositional Heterogeneity of Calf Muscle Using CEST MRI at 3 T.

NMR in biomedicine·2026
Same journal

Estimating the Sodium Content: A Case Series of Benign and Malignant Renal Tumours Using <sup>23</sup>Na-MRI at 3 T.

NMR in biomedicine·2026
See all related articles

Phased array ghost elimination (PAGE) cancels MRI artifacts using parallel imaging, enabling faster scans and reduced distortion. This technique allows for non-interleaved acquisition orders, improving image quality and flexibility.

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Image Reconstruction
  • Signal Processing

Background:

  • Ghost artifacts in MRI arise from various spatial distortions like off-resonance and flow.
  • Current methods often rely on interleaved acquisition orders to mitigate these artifacts.
  • Sensitivity encoding (SENSE) is a parallel imaging technique used for accelerated imaging.

Purpose of the Study:

  • To introduce and evaluate the Phased Array Ghost Elimination (PAGE) technique for canceling MRI ghost artifacts.
  • To demonstrate PAGE's application in full field-of-view (FOV) images and its flexibility in acquisition strategies.
  • To explore PAGE's potential for improving echo-planar imaging (EPI) by enabling non-interleaved acquisition orders.

Main Methods:

  • PAGE utilizes phased array combining coefficients calculated via constrained optimization to null ghost artifacts.

Related Experiment Videos

  • The technique is applied to full FOV images, differing from SENSE's acceleration focus.
  • In vivo coil sensitivity estimation is performed using temporally varying phase encode ordering, generalizing methods like TSENSE and UNFOLD.

    • Main Results:

    • PAGE enables practical sequential, non-interleaved phase encode acquisition orders, reducing repetition time (TR) by eliminating echo-shifting.
    • This non-interleaved order reduces distortions from off-resonance, in-plane flow, and EPI delay misalignment.
    • PAGE facilitates inherent fat-water separation in EPI and can be integrated with methods like LEENA and multi-point Dixon for off-resonance correction.

    Conclusions:

    • PAGE offers a flexible parallel imaging approach for robust ghost artifact cancellation in MRI.
    • The technique allows for acquisition strategy optimization, leading to reduced scan times and improved image quality.
    • PAGE has broad applicability, including correcting ghosts from steady-state variations and enhancing EPI performance.