gms | German Medical Science

77. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e. V.

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e. V.

24.05. - 28.05.2006, Mannheim

SonoPointer® – a prototype ultrasound system for measuring skull bone thickness

SonoPointer® – Ein Prototyp zur Ultraschallbasierten Dickenmessung am Schädelknochen

Meeting Abstract

Suche in Medline nach

  • corresponding author presenting/speaker Philipp A. Federspil - University Hospital Heidelberg, Otorhinolaryngology, Heidelberg, Germany
  • Steffen H. Tretbar - Fraunhofer Institute for Biomedical Engineering IBMT, St. Ingbert, Germany
  • Peter K. Plinkert - University Hospital Heidelberg, Otorhinolaryngology, Heidelberg, Germany

German Society of Otorhinolaryngology, Head and Neck Surgery. 77th Annual Meeting of the German Society of Otorhinolaryngology, Head and Neck Surgery. Mannheim, 24.-28.05.2006. Düsseldorf, Köln: German Medical Science; 2006. Doc06hno098

Die elektronische Version dieses Artikels ist vollständig und ist verfügbar unter: http://www.egms.de/de/meetings/hno2006/06hno098.shtml

Veröffentlicht: 7. September 2006

© 2006 Federspil et al.
Dieser Artikel ist ein Open Access-Artikel und steht unter den Creative Commons Lizenzbedingungen (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.de). Er darf vervielf&aauml;ltigt, verbreitet und &oauml;ffentlich zug&aauml;nglich gemacht werden, vorausgesetzt dass Autor und Quelle genannt werden.


Gliederung

Text

Introduction: For a variety of surgical procedures at the skull, it is of great interest to know the thickness of the skull bone, e.g. for craniotomy, osteosynthesis, calvarial split-bone harvesting, implantation of hearing devices, and implantation of percutaneous titanium fixtures for bone-anchored hearing aids and prostheses.

Materials and Method: The SonoPointer® consists of a Transmit Receive Module II and a 2.25 MHz ultrasound transducer integrated in a handpiece with a soft delay line. 16 human cadaveric skull bones preserved with formaldehyde were measured at 3 points each by ultrasound in water bath and with direct coupling as well as mechanically by callipers.

Results: Coded excitation was better than the use of conventional pulses. The average difference between the mechanical thickness and the coded excitation ultrasound method with direct coupling was 0.04 mm±0.62 mm. The 95% limits of agreement between the two methods were -1.18 mm and 1.25 mm. The limits of agreement for the two caliper measurements were as high as -0.4 mm and 0.42 mm.

Conclusion:The SonoPointer® is a promising tool for skull surgery by providing valuable information on skull bone thickness. Validation in vital human skull bone in an ex vivo setting will be the next step.