Identification of calcification with MRI using susceptibility-weighted imaging: a case study
Zhen Wu1, Sandeep Mittal, Karl Kish
1McMaster University, School for Biomedical Engineering, Hamilton, Ontario, Canada.
Journal of Magnetic Resonance Imaging : JMRI
|December 20, 2008
Summary
Susceptibility weighted imaging (SWI), an MRI technique, effectively identifies calcifications, matching computed tomography (CT) results. SWI shows potential for detecting calcifications in various conditions.
Area of Science:
- Radiology
- Neuroimaging
- Medical Imaging
Background:
- Susceptibility weighted imaging (SWI) is an advanced magnetic resonance imaging (MRI) technique utilizing phase images.
- SWI is recognized for its sensitivity in detecting substances with different magnetic susceptibilities, such as calcium.
Observation:
- A single patient case presented with diverse calcifications: a partially calcified oligodendroglioma, multiple calcified cysticercosis lesions, and physiological calcifications.
- Computed tomography (CT) and SWI phase images were acquired and compared for lesion characterization.
Findings:
- SWI phase images successfully identified all calcified lesions visualized on CT.
- SWI detected additional calcifications not apparent on CT in this specific case.
- The study demonstrated comparable performance between SWI and CT in identifying calcifications.
Implications:
- SWI filtered phase images show promise as a non-invasive imaging modality for detecting calcifications.
- This technique may offer advantages in visualizing subtle or newly formed calcifications.
- SWI could be a valuable tool in the diagnosis and monitoring of conditions involving calcification.
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