SUPERCONDUCTING MAGNET APPARATUS AND MAGNETIC RESONANCE IMAGING APPARATUS

• Main Authors: HORI TOMOCHIKA, MIYAFUKU TERUHISA, NAKAGAWA RYUJI
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2017
• Subjects: 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

PROBLEM TO BE SOLVED: To provide a superconducting magnet apparatus which maintains excitation speed and furthermore can reduce a temperature rise thereof due to energization of a superconducting coil, and to provide a magnetic resonance imaging apparatus.SOLUTION: The superconducting magnet apparatus comprises: a spool 40 having a winding core 21, a first flange part 22 provided at one end of the winding core 21, and a second flange part 23 provided at the other end of the winding core 21; a superconducting wire 24 wound around the winding core 21; a refrigerator 46 for cooling the superconducting wire 24; a heat transfer member 27 (for example, oxygen-free copper, pure aluminum, or the like) for thermally connecting between the first flange part 22 or the second flange part 23 and the refrigerator 46; and an electrical insulation member 28 (for example, aluminum nitride, silicone carbide, or the like) for insulating between the flange parts 22, 23 and the refrigerator 46 that are thermally connected to the heat transfer member 27. A magnetic resonance imaging apparatus comprises the superconducting magnet apparatus.SELECTED DRAWING: Figure 4 【課題】励磁速度を維持しながらも超電導コイルの通電による温度上昇を低減することが可能な超電導磁石装置及び磁気共鳴撮像装置を提供する。【解決手段】超電導磁石装置は、巻芯２１、巻芯２１の一端に設けられた第１鍔部２２、及び、巻芯２１の他端に設けられた第２鍔部２３を有する巻枠４０と、巻芯２１に捲回された超電導線２４と、超電導線２４の冷却を行う冷凍機４６と、第１鍔部２２又は第２鍔部２３と冷凍機４６との間を熱的に接続する伝熱部材２７（例；無酸素銅、純アルミニウム等）と、伝熱部材２７に熱的に接続されている鍔部２２，２３と冷凍機４６との間を絶縁する電気絶縁部材２８（例；窒化アルミニウム、炭化珪素等）とを備える。磁気共鳴撮像装置は、超電導磁石装置を備えている。【選択図】図４