SUPERCONDUCTIVE MAGNET DEVICE AND MAGNETIC RESONANCE IMAGING DEVICE USING IT

PROBLEM TO BE SOLVED: To provide an MRI device of a high magnetic field which is excellent in magnetic field uniformity and is capable of sufficiently securing a refrigerating performance. SOLUTION: A pulse tube refrigerator is adopted and a valve unit is installed in a place of a low experience mag...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAYAMA TAKESHI, MAENO SHOGO, WATANABE HIROYUKI, TSUDA MUNETAKA, SAKAKIBARA KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS DIAGNOSIS ELECTRICITY HUMAN NECESSITIES HYGIENE IDENTIFICATION INDUCTANCES MAGNETS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEDICAL OR VETERINARY SCIENCE PHYSICS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SURGERY TESTING TRANSFORMERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an MRI device of a high magnetic field which is excellent in magnetic field uniformity and is capable of sufficiently securing a refrigerating performance. SOLUTION: A pulse tube refrigerator is adopted and a valve unit is installed in a place of a low experience magnetic field. For instance, the valve unit is installed on the ceiling of a shield room, or the valve unit is arranged at a connection column which connects a set of coil containers so as to oppose each other. By the MRI device of this invention, a sufficient refrigerating performance is obtained without adversely affecting the magnetic field uniformity of an imaging space. COPYRIGHT: (C)2006,JPO&NCIPI