title: Volume measurement of intracranial aneurysms from 3D rotational angiography: improvement of accuracy by gradient edge detection.
abstract: Manual volume measurement of intracranial aneurysms from 3D rotational angiography varies on different threshold settings and, therefore, is operator-dependent. We developed and validated a method based on automatic gradient edge detection that is independent on threshold settings and provides an accurate and reproducible volume measurement. This method was compared with manual volume calculation in 13 aneurysm phantoms, and the results were significantly more accurate.
authors.affiliation: Department of Electrical Engineering, Mathematics and Computer Sciences, Technical University Twente, Enschede, Netherlands.
authors.forename: Javier Oliván
authors.initials: JO
authors.lastname: Bescós
authors.forename: Marjan J
authors.initials: MJ
authors.lastname: Slob
authors.forename: Cornelis H
authors.initials: CH
authors.lastname: Slump
authors.forename: Menno
authors.initials: M
authors.lastname: Sluzewski
authors.forename: Willem Jan
authors.initials: WJ
authors.lastname: van Rooij
mesh_terms: D002533:Cerebral Angiography / Q000379:methods*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D019047:Phantoms, Imaging; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods; D015203:Reproducibility of Results; D012886:Skull / Q000000981:diagnostic imaging