Title:
NMR SYSTEM
Document Type and Number:
Japanese Patent JP3532305
Kind Code:
B2
Abstract:
PURPOSE: To make possible to remove an artifact that occurs in a restructured image by providing a noise detector that detects a short-time noise pulse and a noise filter comprising a blanking circuit that removes the noise pulse.
CONSTITUTION: NMR signals occurring in a subject are picked up by the receiving coil of an MRI system and inputted to a transceiver module through a preamplifler. The module has a built-in noise filter, which receives the NMR signals through the preamplifler to an input terminal 260. The NMR signals are divided at a contact point 261, and inputted to a noise detector 263 and a time delay circuit 265. Time-delayed NMR signals and noise display signals are applied to a blanking circuit 271. The blanking circuit is turned on by the noise display signal of a line 267 and blocks short-time noises contained in the NMR signals.
Inventors:
Crawford, Carl R.
Eash, Matthew G.
Souza, Steven P.
Pelc, Norbert J.
Dallapiazza, Dennis G.
Small, Daniel S.
Stormont, Robert S.
Eash, Matthew G.
Souza, Steven P.
Pelc, Norbert J.
Dallapiazza, Dennis G.
Small, Daniel S.
Stormont, Robert S.
Application Number:
JP16322595A
Publication Date:
May 31, 2004
Filing Date:
June 29, 1995
Export Citation:
Assignee:
GENERAL ELECTRIC CO <GE>
International Classes:
G01R33/32; A61B5/055; G01R33/36; G01R33/56; (IPC1-7): A61B5/055; G01R33/32
Attorney, Agent or Firm:
松本 研一
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