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AJNR - American Journal of Neuroradiology

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3D Cerebral Angiography: Radiation Dose Comparison with Digital Subtraction Angiography

Beth A. Schueler^a, David F. Kallmes^a and Harry J. Cloft^a

^a From the Department of Radiology, Mayo Clinic, College of Medicine, Rochester, MN

View larger version (76K): [in a new window]   FIG 1. Skin dose distribution for (A) 3D RA and (B) biplanar DSA. The exposed film is overlaid on a graphic representation of skin surface unfolded from the anterior midline.

View larger version (70K): [in a new window]   FIG 2. Volume-rendered 3D RA image after coil embolization of a complex left ophthalmic aneurysm. On biplanar angiography, the coil mass overlapped the parent vessel in both views. The lumen was easily viewed on the reconstructed 3D RA image. During embolization, we used serial 3D RA runs to assess whether each additional coil compromised the lumen of the parent artery.