(19)

(11)

EP 2 552 295 A2

(12)

(88) Date of publication A3: 19.01.2012 (43) Date of publication: 06.02.2013 Bulletin 2013/06 (21) Application number: 11716073.9 (22) Date of filing: 25.03.2011

(51) International Patent Classification (IPC):  A61B 3/00(2006.01) G01N 21/47(2006.01) A61B 3/12(2006.01) G01B 9/00(2006.01) (86) International application number: PCT/JP2011/001768 (87) International publication number: WO 2011/121961 (06.10.2011 Gazette 2011/40)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 31.03.2010 JP 2010082810 (71) Applicant: Canon Kabushiki Kaisha Tokyo 146-8501 (JP)	(72) Inventors: SATO, Makoto Tokyo 146-8501 (JP) SAKAGAWA, Yukio Tokyo 146-8501 (JP) YOSHIDA, Hirofumi Tokyo 146-8501 (JP) (74) Representative: Walker, Philip Martin et al Canon Europe Ltd European Patent Department 3 The Square Stockley Park Uxbridge, Middlesex UB11 1ET Stockley Park Uxbridge, Middlesex UB11 1ET (GB)