(19)

(11)

EP 1 080 351 A1

(12)

(43) Date of publication: 07.03.2001 Bulletin 2001/10 (21) Application number: 99922372.0 (22) Date of filing: 20.05.1999

(51) International Patent Classification (IPC)7: G01L 1/20, A61B 5/103, G06K 11/12, G01B 7/28 (86) International application number: PCT/GB9901/601 (87) International publication number: WO 9960/357 (25.11.1999 Gazette 1999/47)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 21.05.1998 GB 9811021 (71) Applicant: BRUNEL UNIVERSITY Middlesex, UB8 3PH (GB)	(72) Inventors: SANDBACH, David Middlesex UB8 3PH (GB) CHAPMAN, Christopher Middlesex UB8 3PH (GB) (74) Representative: Jehan, Robert et al Williams, Powell & Associates,4 St Paul's Churchyard London EC4M 8AY London EC4M 8AY (GB)