Clinical Trial: Contrast-enhanced Magnetic Resonance Angiography Investigation of Intracranial Aneurysms and Prospective Study of Risk Factors

Study Status: Active, not recruiting
Recruit Status: Unknown status
Study Type: Observational

Official Title: Imaging Epidemiological Investigation of Intracranial Aneurysms and the Prospective Study of Risk Factors：Assessment of MR Imaging Trail

Brief Summary: This is a prospective observational registry with intent to detect the prevalence of intracranial aneurysms with contrast-enhanced MR angiography (CE-MRA) at 1.5T, and to determine the risk factors such as high blood pressure and cigarette smoking relating to intracranial aneurysms.

Detailed Summary:

Intracranial aneurysms are common and have been reported increased incidence rate because of the widespread use of high-resolution imaging techniques. They are clinically important because of the life-threatening rupture and hemorrhage. Early detection and diagnosis is the key of treatment. Contrast-enhanced MR angiography (CE-MRA), as a simple, sensitivity and noninvasive method, is playing an important role in Vascular Imaging. CE-MRA has been an accuracy modality for intracranial aneurysm at most centers and proved the high sensitivity and accuracy comparing with DSA. Therefore, we use CE-MRA at 1.5T as a tool of epidemiological investigation of intracranial aneurysms.

In retrospective analysis, conventional risk factors for intracranial aneurysms include hypertension, hyperlipidemia, diabetes mellitus (DM), smoking history, and family history, etc. However, retrospective analysis probably gives an underestimation or overestimation of the actual results. Prospective analysis will get accurate data on the risk factors relating to intracranial aneurysms

Sponsor: Second Military Medical University

Current Primary Outcome: Intracranial aneurysms identified by CE-MRA [ Time Frame: 24 months ]

Original Primary Outcome: Same as current

Current Secondary Outcome: Statistical analysis of the prospective factors which contribute to the development of intracranial aneurysms [ Time Frame: 6 months after the study ]

Original Secondary Outcome: Same as current

Information By: Second Military Medical University

Dates:
Date Received: October 18, 2009
Date Started: January 2009
Date Completion: June 2011
Last Updated: October 26, 2009
Last Verified: October 2009