(19)

(11)

EP 1 668 596 A1

(12)

(43) Date of publication: 14.06.2006 Bulletin 2006/24 (21) Application number: 04767004.7 (22) Date of filing: 20.08.2004

(51) International Patent Classification (IPC):  G06T 11/00(1995.01) A61B 6/03(1985.01) (86) International application number: PCT/FI2004/000490 (87) International publication number: WO 2005/020154 (03.03.2005 Gazette 2005/09)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 25.08.2003 FI 20031196 (71) Applicants: Ruotsalainen, Ulla 00950 helsinki (FI) Happonen, Antti 33800 Tampere (FI) Alenius, Sakari 33880 Lempäälä (FI)	(72) Inventors: Ruotsalainen, Ulla 00950 helsinki (FI) Happonen, Antti 33800 Tampere (FI) Alenius, Sakari 33880 Lempäälä (FI) (74) Representative: Simmelvuo, Markku Kalevi  Papula Oy P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)