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Double echo steady state MR imaging of epidermoids
Iwao Yamakami1, Eiichi Kobayashi, Naokatsu Saeki
1Department of Neurosurgery, Chiba University School of Medicine, Chiba, Japan. yamkami@med.m.chiba-u.ac.jp
Summary
Double echo steady state (DESS) magnetic resonance (MR) imaging effectively diagnoses intracranial epidermoids. DESS provides superior contrast and spatial resolution compared to other MR techniques for these tumors.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Intracranial epidermoids are tumors that require accurate diagnostic imaging.
- Conventional magnetic resonance (MR) imaging techniques have limitations in visualizing these lesions.
Observation:
- This study evaluated two surgically confirmed cerebellopontine angle epidermoids.
- Five MR imaging techniques were compared, including T1-weighted, T2-weighted, diffusion-weighted, fluid-attenuated inversion-recovery, and constructive interference in steady state.
- Double echo steady state (DESS) imaging was also performed.
Findings:
- Epidermoids appeared as homogenous hyperintense lesions on DESS MR images.
- DESS imaging demonstrated excellent contrast between the epidermoid tumors and adjacent brain tissue and cerebrospinal fluid-filled cisterns.
- DESS imaging exhibited superior performance in visualizing epidermoids compared to the other evaluated MR techniques.
Implications:
- DESS MR imaging is a highly effective tool for diagnosing intracranial epidermoids.
- The enhanced contrast and spatial resolution of DESS can improve diagnostic accuracy.
- This technique may become a valuable addition to the neuroradiological imaging armamentarium for epidermoid tumors.