Nuclear Magnetic Resonance Tomograph and Nuclear Magnetic Resonance Method

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The invention describes an improved magnetic resonance imaging (MRI) scanner and nuclear magnetic resonance (NMR) method that utilizes the coupling of traveling E01-mode electromagnetic waves into the imaging volume. Unlike conventional MRI systems, which have reduced sensitivity and higher noise at the edges of the measurement volume, this technology enables sharp, low-noise imaging even in peripheral and elongated sample areas. The solution involves specialized antennas or wave transformers to selectively couple specific electromagnetic modes and enhance imaging sensitivity throughout the scanning area, without increasing energy absorption in sensitive body regions like the head or feet.

Use CasesContent extracted from patent full text and abstract with AI.

• Medical MRI scanners for human or animal diagnostics, especially for imaging large or peripheral body regions (e.g., limbs, torso) with improved clarity.
• Preclinical research imaging of small animals where precise imaging of entire or extended body areas is critical.
• High-field MRI systems in hospitals and research institutions requiring better image quality at the edges of the scanning field.
• Industrial or material science non-destructive testing where volumetric imaging of objects with complex shapes and peripheral features is important.

BenefitsContent extracted from patent full text and abstract with AI.

• Provides sharper, lower-noise MRI images across the entire measurement volume, including peripheral regions.
• Reduces signal sensitivity variations along and away from the MRI magnet axis, leading to more uniform and reliable imaging.
• Minimizes the specific absorption rate (SAR) in sensitive body areas, improving safety and complying with regulatory standards.
• Allows for larger bore sizes in MRI systems, reducing claustrophobia for patients and enabling imaging of larger samples or subjects.
• Facilitates advanced parallel imaging techniques (Transmit-SENSE), enhancing image encoding and reconstruction capabilities.

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Patent Abstract

The invention relates to a magnetic resonance imaging scanner and a nuclear magnetic resonance method. According to the invention, use is made of a magnetic resonance imaging scanner comprising a magnet, a gradient coil and a transmission unit for travelling electromagnetic waves, by means of which travelling E01-mode electromagnetic waves are coupled into the measuring volume.