(1) To illustrate the DSA, CT angiography, and MR angiography imaging characteristics of the various types of cerebral aneurysms. (2) To delineate the advantages and limitations of different imaging modalities for diagnosing cerebral aneurysms. (3) To review the pathophysiology, complications, and current treatment options for cerebral aneurysms.

Imaging features and pathophysiology of different types of cerebral aneurysms: - Saccular/Berry, - Fusiform, - Giant, - Mycotic, - Neoplastic, - Traumatic | Aneurysm Mimics | Advantages/Limitations of imaging modalities: - DSA, - CTA, - MRA | Complications: - Aneurysmal subarachnoid hemorrhage, - Local mass effect, - Mural thrombus with distal thromboembolism | Treatment: - Endovascular, - Surgical clipping | Current Recommendations for Endovascular Treatment: - Unruptured vs. Ruptured aneurysms

The major teaching points of this exhibit are: (1) Many different types of cerebral aneurysms are encountered in clinical practice, with unique etiologies and imaging features. (2) DSA, CT angiography, and MR angiography can be used to diagnose cerebral aneurysms, each with distinct advantages and limitations that may limit their sensitivity and specificity. (3) Practice patterns for the selection of patients for endovascular treatment have been modified on the basis of recent clinical studies.