title: 3D-2D ultrasound feature-based registration for navigated prostate biopsy: a feasibility study.
abstract: The aim of this paper is to describe a 3D-2D ultrasound feature-based registration method for navigated prostate biopsy and its first results obtained on patient data. A system combining a low-cost tracking system and a 3D-2D registration algorithm was designed. The proposed 3D-2D registration method combines geometric and image-based distances. After extracting features from ultrasound images, 3D and 2D features within a defined distance are matched using an intensity-based function. The results are encouraging and show acceptable errors with simulated transforms applied on ultrasound volumes from real patients.
authors.forename: Sonia Y
authors.initials: SY
authors.lastname: Selmi
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Promayon
authors.forename: Jocelyne
authors.initials: J
authors.lastname: Troccaz
mesh_terms: D000465:Algorithms; D005240:Feasibility Studies; D006801:Humans; D061705:Image-Guided Biopsy / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D011467:Prostate / Q000000981:diagnostic imaging / Q000473:pathology*; D014463:Ultrasonography / Q000379:methods*