AngioSuite: an accurate method to calculate aneurysm volumes and packing densities.
OBJECTIVE
AngioSuite was developed to allow the easy and accurate calculation of cerebral aneurysm volumes and packing densities. The present study was undertaken to validate its accuracy.


METHODS
Mathematical models and software were created to facilitate more complex aneurysm volume calculations than previously described three-dimensional geometric models. 20 phantom aneurysm clay models were created and analyzed (length, width, depth and volume) using angiographic mathematical modeling (AngioSuite), geometric modeling (AngioCalc) and three-dimensional volume reconstructions from the vendor's Leonardo workstation (Siemens).


RESULTS
The mean volumes of all phantoms analyzed by the AngioSuite system differed from true volumes by an average of 2.2%. Mean volumes of all phantoms analyzed by the AngioCalc system differed from true volumes by an average of 11.3%. Mean volumes obtained from the Leonardo workstation windowed for best appearance differed by an average of 5.18%.


CONCLUSIONS
The AngioSuite software system provides an accurate means of calculating aneurysm volumes. Typical packing densities (40% or less) are thus accurate within ±1%. Angiographic mathematical modeling with AngioSuite is more accurate than geometric modeling and three-dimensional volume reconstructions windowed for best appearance (Leonardo).
Cascade Medical, Knoxville, Tennessee, USA.
Keith
K
Woodward
David A
DA
Forsberg
D000465:Algorithms; D015901:Angiography, Digital Subtraction; D002533:Cerebral Angiography / Q000295:instrumentation / Q000379:methods*; D003198:Computer Simulation; D006801:Humans; D021621:Imaging, Three-Dimensional; D002532:Intracranial Aneurysm / Q000473:pathology* / Q000601:surgery; D008959:Models, Neurological; D015233:Models, Statistical; D019047:Phantoms, Imaging; D012984:Software