title: Measurement of the aorta and its branches with helical CT.
abstract: Contiguous orthonormal arterial cross sections, segment lengths, and curvature were semiautomatically quantified from helical computed tomographic (CT) angiographic data in phantoms and two patients. Measurements of mean diameter and curvature correlated with reference values (r2 = .99), and mean fractional errors were 0.07 and 0.06 for mean diameter and curvature measurements, respectively. Volumetric measurement showed a potential to increase the accuracy, precision, and diagnostic utility of CT angiography.
authors.affiliation: Department of Radiology, Stanford University School of Medicine, CA 94305-5105, USA.
authors.forename: G D
authors.initials: GD
authors.lastname: Rubin
authors.forename: D S
authors.initials: DS
authors.lastname: Paik
authors.forename: P C
authors.initials: PC
authors.lastname: Johnston
authors.forename: S
authors.initials: S
authors.lastname: Napel
mesh_terms: D000328:Adult; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging*; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging*; D001027:Aortography / Q000295:instrumentation / Q000379:methods; D003287:Contrast Media; D005240:Feasibility Studies; D006801:Humans; D007472:Iohexol; D008297:Male; D008955:Models, Cardiovascular; D019047:Phantoms, Imaging; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*
chemical_list: D003287:Contrast Media; D007472:Iohexol