Four-end-ring birdcage radio frequency coil system supporting three-nuclide imaging

Abstract

The invention provides a four-end-ring birdcage radio frequency coil system supporting three-nuclide imaging, the system comprises a first end ring, a second end ring, a third end ring and a fourth end ring, the first end ring, the second end ring, the third end ring and the fourth end ring are arranged in a manner of sharing a central axis, the second end ring is located between the first end ring and the third end ring, the third end ring is positioned between the second end ring and the fourth end ring; at least one of the first end ring, the second end ring, the third end ring and the fourth end ring is provided with an excitation port; a plurality of first wires, a plurality of second wires and a plurality of third wires which are parallel to the central axis; the first wires are connected between the first end ring and the second end ring, the second wires are connected between the second end ring and the third end ring, and the third wires are connected between the third end ring and the fourth end ring; and a double-harmonic circuit which is electrically connected with the excitation port and is used for realizing resonant frequencies of the two nuclides. According to the invention, resonant frequencies of three different nuclides are realized at the same time, and good electromagnetic isolation performance is displayed among the frequencies.

Description

technical field [0001] The invention relates to nuclear magnetic resonance technology, in particular to a four-terminal ring birdcage radio frequency coil system supporting three-nuclide imaging. Background technique [0002] Achieving high-quality imaging of biological endogenous weak signals faces many major technical challenges. Compared with traditional hydrogen-proton MRI, due to the low content of weak nuclides in the body, affected by their physical properties, weak nuclides usually have lower gyromagnetic ratios and lower spatial resolutions. The precise excitation of the magnetic field, as well as the highly sensitive detection method of magnetic resonance signals and the multi-core receiving coil have become the research focus. In a multi-tuned coil system, 1 The physical proximity of H and aprotic elements leads to strong coupling between the elements, severely degrading the coil sensitivity, which results in longer acquisition times and increases the radio freq...

AI Technical Summary

Problems solved by technology

In a multi-tuned coil system, 1 The physical proximity of H and aprotic elements leads to strong coupling between the elements, severely degrading the coil sensitivity, which results in longer acquisition times and increases the radio frequency (RF) field in order to improve the signal-to-noise ratio (SNR) and resolution inhomogeneity

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