gms | German Medical Science

55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e. V. (DGNC)
1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

25. bis 28.04.2004, Köln

The role of image fusion for radiosurgery (RS) / stereotactic radiotherapy (SRT)

Die Bedeutung der Bildfusion für die Radiochirurgie /stereotaktische Radiotherapie

Meeting Abstract

Suche in Medline nach

  • corresponding author Klaus Hamm - Abteilung für stereotaktische Neurochirurgie und Radiochirurgie, Helios Klinikum Erfurt, Nordhäuser Str. 74, 99089 Erfurt
  • G. Kleinert - Abteilung für stereotaktische Neurochirurgie und Radiochirurgie, Helios Klinikum Erfurt, Nordhäuser Str. 74, 99089 Erfurt
  • G. Surber - Abteilung für stereotaktische Neurochirurgie und Radiochirurgie, Helios Klinikum Erfurt, Nordhäuser Str. 74, 99089 Erfurt

Deutsche Gesellschaft für Neurochirurgie. Ungarische Gesellschaft für Neurochirurgie. 55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), 1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie. Köln, 25.-28.04.2004. Düsseldorf, Köln: German Medical Science; 2004. DocMI.03.01

Die elektronische Version dieses Artikels ist vollständig und ist verfügbar unter: http://www.egms.de/de/meetings/dgnc2004/04dgnc0258.shtml

Veröffentlicht: 23. April 2004

© 2004 Hamm 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

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Objective

The most important base for RS/SRT is the exact definition of the isocenter as a precondition for the following high precise dose application, even in cases of very small target volumes. This aim can be achieved by an “overall process accuracy” including image fusion.

Methods

In the last 3.5 years, 447 patients were treated with RS/SRT. For each treatment planning procedure a fully automatic image fusion of all interesting image modalities was performed, visually controlled and, if necessary corrected. The planning CT (1.25mm slices) and for arteriovenous malformation also a stereotactic DSA was acquired using head fixation with stereotactic arc, in case of SRT a relocatable stereotactic mask. Different sequences of MRI (1-2mm slices) and, if necessary FET-PET (3.4mm) were acquired without head fixation. The transfer of all image data sets was accomplished by LAN except of external conducted studies where a CD/MOD was used.

Results

The fully automatic integration of all interesting image data sets (several MRI- and CT- series, PET) into treatment planning procedure and follow-up studies could be realized in each patient. Precision of the automatic fusion result depended on slice thickness. Fusing thin slices of an enlarged region of interest into another data set was also possible with a good standard being achieved. Target volume could be outlined reliably and more satisfactorily using all the available information from the fused image data sets. Fused follow-up studies were exactly comparable and quantitatively evaluable.

Conclusions

The automatic image fusion is a high quality tool, especially for precision in RS/SRT planning and exact comparable follow-up studies respectively. It allows for a fast (about 1-2 min.) and precise fusion of different image data sets depending on the high quality in data acquisition.