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| Name | Class |
|---|---|
| VasSol®-Nova Software | UNKNOWN |
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Using phase contrast MR Angiography with NOVA® Software, this study intends to identify,evaluate and map intracranial aneurysm development as well as develope a predicator for future morphological changes of aneurysms and possible risk of future rupture.
Hemodynamic stress toward the wall of intracranial artery with associated genuine defects of wall remodeling capacity is one of many hypotheses of subarachnoid aneurysm development. In addition, hemodynamic stress toward an aneurysm wall may play a very significant role for the rupture of an aneurysm creating acute Subarachnoid hemorrhage. We think the Wall Shear Stress (WSS) measurement toward an intracranial arterial wall and intracranial aneurysmal wall may provide valuable information for understanding of intracranial aneurysm development as well as predicting future morphological changes of aneurysm and possibly risk of future rupture. This study is significant especially in the management of unruptured subarachnoid arterial aneurysm patients and identifying patients who have higher rupture risks for active treatments such as surgical clipping or coiling to prevent unnecessary but potentially risky procedures.
Gadolinium MR Angiography with NOVA® Software will be used to measure the arterial wall shear stress (WSS) for patients with an intracranial arterial aneurysm. The aneurysm will be identified, blood flow, velocity, volume, vascular diameter and the direction of blood measurements will be taken using NOVA® Software at each point of interest. A WSS map of target intracranial artery and/or aneurysm sac will be created and matched with morphological features providing a clue to understand the the relationships between hemodynamic parameters, especially WSS and morphological changes.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 2D/3D Phase contrast MR | Other |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Additional scan time on standard MR angiography | Radiation | Procedure/Surgery: Additional 5 minutes scan time to standard MR angiography Using the Nova® Software, an additional 5 minutes scan time will be required in order to identify aneurysm, select target artery, and complete measurements Arms: |
| Measure | Description | Time Frame |
|---|---|---|
| Identify, measure and map the Wall Shear Stress (WSS) measurements and affects in subarachnoid aneurysm developement. | Duration of the MRA test |
| Measure | Description | Time Frame |
|---|---|---|
| Develope predictor to identify risk factors of possible future aneurysm rupture and SAH | Duration of MRA test |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Seon Kyu Lee, M.D., Ph.D. | Lahey Clinic, Inc. | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Lahey Clinic, Inc. | Burlington | Massachusetts | 01805 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 15890993 | Background | Amin-Hanjani S, Du X, Zhao M, Walsh K, Malisch TW, Charbel FT. Use of quantitative magnetic resonance angiography to stratify stroke risk in symptomatic vertebrobasilar disease. Stroke. 2005 Jun;36(6):1140-5. doi: 10.1161/01.STR.0000166195.63276.7c. Epub 2005 May 12. | |
| 17846193 | Background | Zhao M, Amin-Hanjani S, Ruland S, Curcio AP, Ostergren L, Charbel FT. Regional cerebral blood flow using quantitative MR angiography. AJNR Am J Neuroradiol. 2007 Sep;28(8):1470-3. doi: 10.3174/ajnr.A0582. |
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| ID | Term |
|---|---|
| D002532 | Intracranial Aneurysm |
| D000783 | Aneurysm |
| D013345 | Subarachnoid Hemorrhage |
| ID | Term |
|---|---|
| D020765 | Intracranial Arterial Diseases |
| D002561 | Cerebrovascular Disorders |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
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| 17520716 | Background | Ahn S, Shin D, Tateshima S, Tanishita K, Vinuela F, Sinha S. Fluid-induced wall shear stress in anthropomorphic brain aneurysm models: MR phase-contrast study at 3 T. J Magn Reson Imaging. 2007 Jun;25(6):1120-30. doi: 10.1002/jmri.20928. |
| D009422 | Nervous System Diseases |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
| D020300 | Intracranial Hemorrhages |
| D006470 | Hemorrhage |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |