title: [3-D ultrasound. Initial experiences in various eye diseases].
abstract: BACKGROUND
  Studies have confirmed three-dimensional (3-D) ultrasound as a practical diagnostic tool in examining the eye and orbit and suggest its routine clinical use.
  
  
  METHODS
  3-D ultrasound was prospectively performed in 46 patients (46 eyes) with various ocular diseases. In six large choroidal melanomas the tumor volume were measured by 3-D ultrasound and compared to that measured by MRI and to that calculated by a theoretical formula. To assess the reproducibility of volumetry by 3-D ultrasound the volumes of such three intraocular tumors were measured ten times using ten different virtual sectioning planes and a section thickness of 0.5 mm and/or 1.0 mm.
  
  
  RESULTS
  3-D ultrasound allows the precise assessment of complex three-dimensional structures. Choroidal melanoma volumes measured by 3-D ultrasound, MRI, and theoretical calculation were in the same range.
  
  
  CONCLUSIONS
  Intraocular tumor volume can be measured well by 3-D ultrasound,which may be of clinical importance in follow-up examinations.
authors.affiliation: Augenklinik der Ludwig-Maximilians-Universität München. Thomas.Grasbon@ak-i.med.uni-muenchen.de
authors.forename: T
authors.initials: T
authors.lastname: Grasbon
authors.forename: S
authors.initials: S
authors.lastname: Schriever
authors.forename: J P
authors.initials: JP
authors.lastname: Hoops
authors.forename: A J
authors.initials: AJ
authors.lastname: Mueller
mesh_terms: D002830:Choroid Neoplasms / Q000000981:diagnostic imaging; D005128:Eye Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging; D011446:Prospective Studies; D015203:Reproducibility of Results; D014463:Ultrasonography
vernacular_title: 3D-Ultraschall. Erste Erfahrungen bei verschiedenen Augenerkrankungen.