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Assessing Cortical Cerebral Microinfarcts on High Resolution MR Images
Published on: November 20, 2015
Clinical Implementation of 7T MRI for the Identification of Incidental Intracranial Aneurysms versus Anatomic
P Radojewski1, J Slotboom2, A Joseph3,4,5
1From the Institute of Diagnostic and Interventional Neuroradiology (P.R., J.S., R.W., P.M.), Bern University Hospital, Inselspital, University of Bern, Bern, Switzerland piotr.radojewski@insel.ch.
Abstract:
Most unruptured intracranial aneurysms can be adequately characterized using 1.5T and 3T MR imaging. Findings in a subgroup of patients can remain unclear due to difficulties in distinguishing aneurysms from vascular anatomic variants. We retrospectively analyzed clinical data from 30 patients with suspected incidental aneurysms on 3T MR imaging who underwent 7T MR imaging. In all 30 cases, the differentiation of an aneurysm versus a vascular variant could be achieved. In 20 cases (66%), the initial suspected diagnosis was revised. Our findings suggest that 7T MR imaging provides a clarification tool for the group of patients with suspected unruptured intracranial aneurysms and diagnostic ambiguity after standard 3T MR imaging.
Insights
Seven Tesla (7T) MR imaging clarifies diagnoses for patients with suspected intracranial aneurysms when standard 3T MR imaging is inconclusive. This advanced technique successfully differentiated aneurysms from vascular variants in all cases, revising diagnoses in 66% of patients.
Area of Science:
- Neuroradiology
- Medical Imaging
- Neurology
Background:
- Standard 1.5T and 3T MR imaging are often sufficient for characterizing unruptured intracranial aneurysms.
- Diagnostic ambiguity can arise in differentiating aneurysms from vascular anatomic variants on conventional MR imaging.
- This ambiguity poses a challenge in clinical management and diagnosis.
Purpose of the Study:
- To evaluate the utility of 7 Tesla (7T) MR imaging in resolving diagnostic uncertainty for suspected intracranial aneurysms.
- To assess the accuracy of 7T MR imaging in distinguishing intracranial aneurysms from vascular anatomic variants.
- To determine the impact of 7T MR imaging on initial diagnostic conclusions.
Main Methods:
- Retrospective analysis of clinical data from 30 patients.
- Patients initially underwent 3T MR imaging with suspected incidental aneurysms.
- All 30 patients subsequently underwent 7T MR imaging for further evaluation.
Main Results:
- 7T MR imaging successfully differentiated aneurysms from vascular variants in all 30 cases (100%).
- The initial suspected diagnosis was revised in 20 cases (66%).
- 7T MR imaging provided definitive characterization where 3T imaging was ambiguous.
Conclusions:
- 7T MR imaging serves as a valuable clarification tool for suspected unruptured intracranial aneurysms.
- It effectively resolves diagnostic ambiguity encountered with standard 3T MR imaging.
- This advanced imaging modality improves diagnostic accuracy in challenging neuroradiological cases.
