Title:
低ノイズRFコイルを有するMRイメージングシステム
Document Type and Number:
Japanese Patent JP4663076
Kind Code:
B2
Abstract:
In an MR imaging system provided with a main magnet (10) having a bore (12) and with a gradient coil assembly (18) located within the bore (12), RF coil apparatus is provided for reducing noise in the imaging volume (24) of the MR system. The RF coil apparatus comprises a tubular RF coil form (34) provided with an inner surface(34a), an RF coil (30) attached to the inner surface of the RF coil form (34), and mounting structure (32,36a,36b) extending between the RF coil form (34) and gradient coil assembly (18). The mounting structure supports the RF coil (30) and RF coil form (34) upon the gradient coil assembly (18), in spaced-apart relationship therewith. The apparatus further compises an inner tubular member (22) which is selectively constructed to oppose transmission of acoustic signals from the RF coil (30) to the imaging volume (24). The inner tubular member (22) is fixably supported within the main magnet bore (12) so as to be in selected spaced-apart relationship with the RF coil (30) and RF coil form (34), the inner tubular member (22) substantially enclosing a specified portion of the volume of the bore, which comprises the MR system imaging volume (24).
Inventors:
Dewein Anthony Purgill
Michael jay radian
David E Dean
Michael jay radian
David E Dean
Application Number:
JP2000247158A
Publication Date:
March 30, 2011
Filing Date:
August 17, 2000
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
A61B5/055; G01R33/385; G01R33/34
Domestic Patent References:
| JP59174746A | ||||
| JP61151711U | ||||
| JP2002528204A |
Foreign References:
| US4652824 |
Attorney, Agent or Firm:
Arakawa Satoshi