title: A minimally interactive and reproducible method for abdominal aortic aneurysm quantification in 3D ultrasound and computed tomography with implicit template deformations.
abstract: The maximum diameter of abdominal aortic aneurysm (AAA) is a key quantification parameter for disease assessment. Although it is routinely measured on 2D-ultrasound images, using a volumetric approach is expected to improve measurement reproducibility. In this work, 3D-ultrasound or computed tomography imaging of patients with AAA was combined with a minimally interactive 3D segmentation based on implicit template deformation. Segmentation usability and reproducibility were evaluated on 81 patients, showing a mean measurement time of [2;8]min per case, and Dice coefficients of 0.87±0.12 for 3D-US and 0.81±0.08 for CT. Quantification parameters included a diameter measurement from 3D-US and CT volumes with respective confidence intervals of 0.51 [-2.5;3.52]mm and 1.00 [-1.68;3.67]mm. Additional volume measurements showed confidence intervals of 0.91 [-4.17;5.99]ml for 3D-US and 4.10 [-4.11;12.30]ml for CT.
authors.affiliation: Philips Research, 33 rue de Verdun, 92156 Suresnes Cedex, France. Electronic address: laurence.rouet@philips.com.
authors.forename: L
authors.initials: L
authors.lastname: Rouet
authors.affiliation: Philips Research, 33 rue de Verdun, 92156 Suresnes Cedex, France.
authors.forename: B
authors.initials: B
authors.lastname: Mory
authors.affiliation: Philips Research, 33 rue de Verdun, 92156 Suresnes Cedex, France.
authors.forename: E
authors.initials: E
authors.lastname: Attia
authors.affiliation: Department of Vascular Surgery, Rigshospitalet, Univ. of Copenhagen, Blegdamsvej 9, 2100 Copenhagen, Denmark.
authors.forename: K
authors.initials: K
authors.lastname: Bredahl
authors.affiliation: Médecine Vasculaire, Hôpital Edouard Herriot, Hospices Civils de Lyon, Place d'Arsonval, 69437 Lyon Cedex 03, France.
authors.forename: A
authors.initials: A
authors.lastname: Long
authors.affiliation: Philips Research, 33 rue de Verdun, 92156 Suresnes Cedex, France.
authors.forename: R
authors.initials: R
authors.lastname: Ardon
mesh_terms: D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D015203:Reproducibility of Results; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014463:Ultrasonography / Q000379:methods*
keywords: 3D segmentation; 3D ultrasound; Abdominal aortic aneurysm; Implicit template