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Reproducibility Analysis of a New Objective Method for Measuring Arteriovenous Malformation Nidus Size at Angiography

Steven G. Imbesia, Kimberly Knoxa and Charles W. Kerbera

a From the Department of Radiology (S.G.I., K.K., C.W.K.) and Neurosurgery (C.W.K.), University of California, San Diego Medical Center



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  		FIG 1. Lateral angiogram with an outline of the AVM nidus to be subsequently measured.



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  		FIG 2. Mechanical polar planimeter tracing the outline of the AVM nidus.



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  		FIG 3. Numerical dial reading produced by the planimeter.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X