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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 25:571-573, April 2004
© 2004 American Society of Neuroradiology

Technical Note
BRAIN

Three-Dimensional Digital Angiography: New Tool for Simultaneous Three-Dimensional Rendering of Vascular and Osseous Information during Rotational Angiography

Philippe Gailloud^a, Satoru Oishi^b, Jeffrey Carpenter^a and Kieran J. Murphy^a

^a Division of Interventional Neuroradiology, the Johns Hopkins Medical Institutions, Baltimore, MD
^b Toshiba Medical Systems Research and Development Center, Tochigi, Japan

Address reprint requests to Philippe Gailloud, MD, Division of Interventional Neuroradiology, Department of Radiology and Radiological Sciences, the Johns Hopkins Medical Institutions, Baltimore, MD 21287

Summary: Three-dimensional (3D) digital subtraction angiography (DSA) is the latest development in the neurovascular imaging armamentarium. 3D-DSA combines the anatomic resolution of DSA with 3D visualization abilities previously offered by only CT or MR angiography. 3D-DSA provides more detailed information than does DSA alone in the evaluation of neurovascular lesions, such as cerebral aneurysms. However, the inability of 3D-DSA to simultaneously image osseous and vascular structures is noted as a weakness of this technique compared with CT angiography. We describe a new 3D digital angiography reconstruction algorithm that allows the concurrent display of the cerebral vasculature and the osseous landmarks.