(19)

(11)

EP 0 232 387 A1

(12)

(43) Date of publication: 19.08.1987 Bulletin 1987/34 (21) Application number: 86905128.0 (22) Date of filing: 13.08.1986

(51) International Patent Classification (IPC):  G01F 1/ 716( . ) G01R 33/ 563( . ) (86) International application number: PCT/US1986/001693 (87) International publication number: WO 1987/001208 (26.02.1987 Gazette 1987/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 14.08.1985 US 19850765528 (71) Applicant: BRIGHAM & WOMEN'S HOSPITAL Boston, MA 02115 (US)	(72) Inventors: PATZ, H., Samuel Wayland, MA 01778 (US) HAWKES, Robert, C. Medfield, MA 02052 (US)