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Integrated Photoacoustic, Ultrasound, and Angiographic Tomography (PAUSAT) for NonInvasive Whole-Brain Imaging of Ischemic Stroke
Published on: June 2, 2023
Pictorial essay: Susceptibility-weighted imaging in cerebral ischemia
Puneet Mittal1, Vishal Kalia, Sarika Dua
1Department of Radiodiagnosis, Punjab Institute of Medical Sciences, Jalandhar, Punjab, India.
Abstract:
The susceptiblity effect in magnetic resonance imaging (MRI) has been recognized for long and often has been considered undesirable, producing unnecessary noise. Susceptibility-weighted imaging (SWI) aims at exploiting this effect to provide a different type of contrast that is suited for vascular imaging. We describe five different cases in which SWI was found useful to delineate the underlying ischemia or to arrive at the corect diagnosis.
Insights
Susceptibility-weighted imaging (SWI) in magnetic resonance imaging (MRI) leverages the susceptibility effect for enhanced vascular imaging. This technique aids in delineating ischemia and improving diagnostic accuracy in complex cases.
Area of Science:
- Medical Imaging
- Neuroimaging
- Radiology
Background:
- The susceptibility effect in magnetic resonance imaging (MRI) is a known phenomenon, often perceived as a source of noise.
- Susceptibility-weighted imaging (SWI) has emerged as a technique to utilize this effect for improved contrast.
Purpose of the Study:
- To explore the utility of SWI in clinical diagnosis.
- To demonstrate the application of SWI in identifying vascular-related pathologies.
Main Methods:
- Utilized susceptibility-weighted imaging (SWI) in magnetic resonance imaging (MRI).
- Analyzed five distinct clinical cases where SWI was applied.
Main Results:
- SWI provided valuable contrast for vascular imaging.
- The technique was effective in delineating ischemic areas.
- SWI contributed to achieving correct diagnoses in the presented cases.
Conclusions:
- SWI is a valuable tool for vascular imaging in MRI.
- The technique enhances the visualization of ischemia and aids in accurate diagnosis.
Related Concept Videos
Ischemic Stroke l: Introduction
Ischemic Stroke ll: Pathophysiology
Imaging Studies for Cardiovascular System IV: CMRI
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Imaging Studies VII: Vascular Imaging

