Gamma Knife Radiosurgery for Arteriovenous Malformations Using a Four-Dimensional Dynamic Volume Computed Tomography Angiography Planning System as an Alternative to Traditional Catheter Angiogram.

Of those patients receiving general anesthesia, the patients in the pre-DOS CTA group had a mean “in frame” time and general anesthetic time, of 193 ± 29 minutes while the DOS angiogram group had an anesthetic exposure time of 261 ± 69 minutes, a difference that did not reach statistical significance (p = 0.471).

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