Hotelbuchung
Hotel Registration
Grußwort
Welcome address
Beteiligte Gesellschaften
Societies involved
DOG Information
DOG Information
Eröffnung des Kongresses
Opening Ceremony
Preise
Awards
Ablauf der Tagung 2003
General overview of congress
Lageplan der Räumlichkeiten
Map of Congress Center
Wissenschaftliche Themen
Scientific topics
Symposien
Symposia
Wissenschaftliches Programm
Scientific program
Posterpräsentationen
Poster Presentation
Kurse
Courses
Begleitende Veranstaltungen
Accompanying program
Arbeitssitzungen
Working sessions
Rahmenprogramm
Social program
Allgemeine Informationen
General Information
Autorenindex
Index of Authors
Industrieaussteller
Commercial exhibitors
Sponsoren
Sponsors
Impressum
DOG Homepage
Abstract
Abstract
Comparison of 10 MHz and 20 MHz Sonography in Investigation of Retinal and Choroidal Changes
Kirchhoff A., Guthoff R. F.
Universitäts-Augenklinik Rostock
Purpose: The paper investigates the problems, advantages and potential applications of 20 MHz ultrasound devices in comparison to conventional 10 MHz ultrasound in investigation of the posterior pole of the eye.
Method: Patients with pathologies like chorioidal naevus, chorioidal melanoma and senile macular degeneration was investigated with 10 MHz ultrasound and 20 MHz ultrasound probe in vivo. In this clinical examination was the comparison between the two methods shown with regards to differentiation of the wall of the bulb.
Results: In the comparison of 10 MHz and 20 MHz ultrasound investigations the high frequence ultrasound allows a better differentiation of struktures in retinal and choroidal changes.
Conclusions: High-frequency ultrasound should be given a better differentiation of retinal or choroidal pathologies. The use of 20 MHz frequency improves the resolution, the use is easy and can be helpful in the evaluation of unclear pathologies in cases with non sufficient retinal view (opacities of cornea, lens and vitreous).