Double-frequency excitation coil

By designing dual-frequency excitation coils, including first and second birdcage coils, the problem of low signal-to-noise ratio in hybrid nucleus imaging in low-field magnetic resonance systems was solved, achieving efficient excitation of hydrogen nuclei and hybrid nuclei and improving imaging quality.

CN224317769UActive Publication Date: 2026-06-02SUZHOU MEDCOIL HEALTHCARE
1 Cites 0 Cited by

Patent Information

Application Number
CN202521022211.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-22
Publication Date
2026-06-02
Estimated Expiration
2035-05-22

AI Technical Summary

Technical Problem

In existing magnetic resonance imaging systems, the signal-to-noise ratio of heteronuclear imaging is low, especially in low-field magnetic resonance imaging systems, making it difficult to effectively utilize the physiological and metabolic information of nuclides such as sodium 23Na and phosphorus 31P.

Method used

A dual-frequency excitation coil is designed, comprising a first and a second birdcage coil with different resonant frequencies that partially overlap, for exciting magnetic resonance signals of hydrogen nuclei and heteronuclei. The coil structure is arranged compactly in the axial direction to avoid large size and ensure efficient excitation.

Benefits of technology

It achieves efficient excitation of hydrogen nuclei and heteronuclei in low-field magnetic resonance systems, improves the signal-to-noise ratio of magnetic resonance imaging, provides rich physiological and metabolic information, and is applicable to 3.0T and 5.0T magnetic resonance systems.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model relates to the technical field of magnetic resonance imaging, in particular to a dual-frequency excitation coil, which comprises a first birdcage coil, a second birdcage coil and a third birdcage coil, and is characterized in that the first birdcage coil comprises two first end rings which are separated from each other in the axial direction and a plurality of first supporting legs which are connected with the two first end rings and are separated from each other in the circumferential direction around the axial direction; the second birdcage coil comprises two second end rings which are separated from each other in the axial direction and a plurality of second supporting legs which are connected with the two second end rings and are separated from each other in the circumferential direction; the resonant frequency of the second birdcage coil is different from that of the first birdcage coil, and the second birdcage coil and the first birdcage coil are at least partially overlapped in the axial direction.
Need to check novelty before this filing date? Find Prior Art