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Dynamic T1-weighted ferumoxides enhanced MRI for imaging liver hemangiomas: preliminary observations
1Division of Abdominal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Ellison 234E, 55 Fruit Street, Boston, MA 02114, USA.
Abstract:
The T1-based signal-enhancing effects of ferumoxides was studied in five liver hemangiomas on short echo-time gradient-recalled echo dynamic magnetic resonance imaging to assess the utility of this technique to image perfusion patterns in liver hemangiomas. We observed peripheral nodular enhancement with centripetal fill in all hemangiomas. Our results suggest that this imaging technique, after rapid injection of ferumoxides, can be used for lesion characterization.
Insights
Ferumoxides enhance T1-based MRI signals in liver hemangiomas, revealing characteristic perfusion patterns. This rapid injection technique aids in effective lesion characterization for improved diagnosis.
Area of Science:
- Radiology
- Medical Imaging
- Hepatology
Background:
- Liver hemangiomas are common benign liver tumors.
- Accurate characterization is crucial for appropriate patient management.
- Dynamic contrast-enhanced MRI is a key imaging modality.
Purpose of the Study:
- To evaluate ferumoxides as a T1-based contrast agent for dynamic MRI of liver hemangiomas.
- To assess the utility of short echo-time gradient-recalled echo imaging for visualizing perfusion patterns.
- To determine if this technique aids in lesion characterization.
Main Methods:
- Five liver hemangiomas were studied using dynamic MRI.
- Short echo-time gradient-recalled echo sequences were employed.
- Ferumoxides were rapidly injected as a T1-based contrast agent.
Main Results:
- Ferumoxides demonstrated T1-based signal enhancement in liver hemangiomas.
- Characteristic peripheral nodular enhancement with centripetal fill was observed in all lesions.
- The imaging technique effectively visualized perfusion dynamics.
Conclusions:
- Rapid ferumoxides injection combined with short echo-time dynamic MRI is useful for liver hemangioma imaging.
- This technique facilitates the visualization of characteristic perfusion patterns.
- The method shows promise for improving lesion characterization in liver hemangiomas.