公开(公告)号：US20240045005A1

公开(公告)日：2024-02-08

申请号：US18255967

申请日：2021-12-02

Applicant: Chipiron

Inventor： Dimitri Labat

IPC: G01R33/32 ,  G01R33/34 ,  G01V3/12 ,  A61B5/245 ,  A61B5/05

CPC classification number: G01R33/326 ,  G01R33/34 ,  G01R33/34061 ,  G01V3/12 ,  A61B5/245 ,  A61B5/05

Abstract: A radiofrequency detection and acquisition system, which is based on SQUID and configured to be integrated into a nuclear magnetic resonance system, comprises a primary detection antenna, a flux transformer having an inlet winding connected to the primary detection antenna, a low critical temperature SQUID device for capturing the magnetic flux produced by an outlet winding of the flux transformer and supplying a secondary detection signal, a cryogenic device for cooling the SQUID device and the flux transformer, and means for processing the secondary detection signal emitted by the SQUID device to supply an analogue acquisition signal. The primary detection antenna may be of the volume type, comprising Helmholtz coils or saddle coils, or a more complex volume geometry, particularly gradiometric geometry. The means for processing the secondary detection signal may comprise a flux-locked loop, provided to linearize the response of the SQUID device.