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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...

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Updated: Jun 14, 2026

A Pipeline for 3D Multimodality Image Integration and Computer-assisted Planning in Epilepsy Surgery
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A Pipeline for 3D Multimodality Image Integration and Computer-assisted Planning in Epilepsy Surgery

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Interventional MRI using multiple 3D angiography roadmaps with real-time imaging.

Haris Saybasili1, Anthony Z Faranesh, Christina E Saikus

  • 1Translational Medicine Branch, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892-1061, USA. saybasilih@nhlbi.nih.gov

Journal of Magnetic Resonance Imaging : JMRI
|April 8, 2010
PubMed
Summary
This summary is machine-generated.

Overlaying colorized MR angiography and MR cholangiopancreatography roadmaps onto real-time MRI enhances catheter navigation during interventions. This technique improves visual feedback and anatomical context for MRI-guided procedures.

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Magnetic Resonance-Guided Stereotaxy for Infusions to the Pig Brain
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Magnetic Resonance-Guided Stereotaxy for Infusions to the Pig Brain

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Area of Science:

  • Medical Imaging
  • Interventional Radiology
  • Magnetic Resonance Imaging

Background:

  • Real-time magnetic resonance (MR)-guided catheter navigation is crucial for minimally invasive procedures.
  • Overlaying anatomical roadmaps can improve guidance accuracy and efficiency.

Purpose of the Study:

  • To enhance real-time MR-guided catheter navigation.
  • To achieve this by overlaying colorized multiphase MR angiography (MRA) and MR cholangiopancreatography (MRCP) roadmaps within an anatomic context.

Main Methods:

  • Time-resolved MRA and respiratory-gated MRCP were acquired in a pig model prior to real-time imaging.
  • Data were loaded into a custom workstation, displayed as distinct colored maximum intensity projections (MIPs), and rendered in 3D with real-time multislice imaging using alpha blending.

Main Results:

  • Fused display of MRA MIPs with real-time imaging provided anatomical context during endovascular interventions in swine.
  • Colorized MIPs facilitated differentiation of vascular structures, enhancing visual feedback for device navigation.

Conclusions:

  • Interventional real-time MRI can be enhanced by integrating previously acquired multiphase angiograms.
  • The 3D MIP rendering technique, combined with 2D slice data, offers valuable anatomical context for MRI-guided interventions.