Abstract #2995

MRI/A in the Evaluation of Changes Over Time in Untreated Aneuryms

David A. Saloner¹, Alastair Martin², Daniel Hurwit², Sahand Sohrabi², Andrew Lee², Vitaliy L. Rayz², William Young³, Wade Smith⁴, Randall Higashida², Michael Lawton⁵, Charles McCulloch⁶

¹Radiology and Biomedical Imaging, VAMC/UCSF, San Francisco, CA, United States; ²Radiology and Biomedical Imaging, UCSF, San Francisco, CA, United States; ³Anesthesiology, UCSF, San Francisco, CA, United States; ⁴Neurology, UCSF, San Francisco, CA, United States; ⁵Neurological Surgery, UCSF, San Francisco, CA, United States; ⁶Epidemiology and Biostatistics, UCSF, San Francisco, CA, United States

This study reports on the serial imaging of subjects with untreated intracranial aneurysms. 74 aneurysms in 68 patients were thrombus-free and studies were conducted over a total of 226 intervals. The standard error of measurement was found to be 4.9%. Approximately 15% of aneurysms were found to grow over time.