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Magnitude image CSPAMM reconstruction (MICSR)
Moriel NessAiver1, Jerry L Prince
1University of Maryland School of Medicine, Dept of Diagnostic Radiology, Baltimore, Maryland 21201, USA. moriel@simplyphysics.com
Magnetic Resonance in Medicine
|July 24, 2003
Summary
A new Magnitude Image CSPAMM Reconstruction (MICSR) method improves cardiac MRI tag persistence and contrast. This technique simplifies complex data handling and enhances visualization of myocardial deformation.
Area of Science:
- Cardiovascular Imaging
- Magnetic Resonance Imaging (MRI)
- Biomedical Engineering
Background:
- Cardiac MRI with complementary spatial modulation of magnetization (CSPAMM) requires complex data subtraction for untagged signal removal.
- Traditional CSPAMM methods face challenges with complex data handling and significant tag contrast degradation during diastole.
Purpose of the Study:
- To present a novel Magnitude Image CSPAMM Reconstruction (MICSR) method for cardiac MRI.
- To improve image contrast and tag persistence in tagged cardiac MR images.
Main Methods:
- Developed and implemented the MICSR method using only magnitude images, avoiding complex data processing.
- Evaluated MICSR performance using simulations, phantom studies, and two normal volunteers.
Main Results:
- MICSR produces images with improved contrast and tag persistence compared to traditional CSPAMM.
- Tag contrast was 3.0 times better and contrast-to-noise ratios (CNRs) were 2.0 times better with MICSR at 1000 msec post-R wave trigger.
Conclusions:
- MICSR offers a simpler, effective approach to cardiac MRI image reconstruction.
- The method yields tags with zero mean, sinusoidal profiles, enabling novel visualization of myocardial deformation.