Magnetresonanzbildgebungsvorrichtung und Verfahren zur Steuerung eines Kryokühlers

Details

Veröffentlichungs-Nr.

EP4741862

Anmeldetag

3. November 2025

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

G01R33/38, // G01R33/3815(TSUDA MUNETAKA et al.)

Abstract

An object is to extend a replacement lifetime of a cryocooler and reduce a replacement frequency of the cryocooler, thereby improving an operating rate of an MRI apparatus. A cold head lifetime extension mode is executed. In the cold head lifetime extension mode, a displacer of a cryocooler is driven at a constant frequency that is lower than a predetermined upper limit frequency regardless of a temperature of a superconducting coil, and a drive frequency of a compressor drive unit adjusted by an inverter for a compressor is controlled in accordance with the temperature of the superconducting coil.

Anmelder

Firma

FUJIFILM Corporation

Land

🇯🇵 Japan