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EP 4 157 093 A1

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(43) Date of publication: 05.04.2023 Bulletin 2023/14 (21) Application number: 20938600.2 (22) Date of filing: 01.06.2020

(51) International Patent Classification (IPC):  A61B 6/00(2006.01) G01N 23/02(2006.01) G01N 23/00(2006.01) G01N 23/04(2006.01) (52) Cooperative Patent Classification (CPC): G01N 23/04; G01N 23/10; G01N 23/203; G01N 23/20008; G01N 2223/313 (86) International application number: PCT/US2020/035508 (87) International publication number: WO 2021/246998 (09.12.2021 Gazette 2021/49)

(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 Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: American Science and Engineering, Inc. Billerica, MA 01821 (US)	(72) Inventor: SCHUBERT, Jeffrey, R. Somerville, MA 02143 (US) (74) Representative: Murgitroyd & Company  Murgitroyd House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)