Utsunomiya University

Hokkaido University

Asahikawa Medical College

Kunio Tanaka

Yoshifumi Yamada

Zenwemon Abe

Fumio Sano

Zenuemon Abe

The phase of nuclear magnetization in a target placed in a homogeneous magnetic field and excited by a high-frequency magnetic field is encoded by applying a specifying magnetic field with a non-linear gradient thereto, and the specifying magnetic field is scanned across the target, and the encoded NMR signals are received and processed so as to produce an image of the distribution of nuclear magnetic substance in the target.

Method for imaging nuclear magnetic resonance signals by using

The disclosed method of scanning a specifying magnetic field for nuclear magnetic resonance (NMR) imaging comprises steps of generating the specifying magnetic field by synthesis of a static magnetic field and a magnetic field produced by a group of magnetomotive forces, and moving the center of the specifying magnetic field by superposing a scanning magnetic field from a scanner coil in a certain direction of the magnetic field of the group of magnetomotive forces.

Method of scanning specifying magnetic field for nuclear magnetic

The disclosed method comprises steps of alternately applying a strong static magnetic field and a weak homogeneous static magnetic field to a body being measured (target), selectively exciting nuclear magnetic resonance (NMR) at a specific portion of the target by applying a high-frequency magnetic field and a specifying magnetic field thereto, detecting NMR signals from the thus excited portion, and scanning the target by repeating the selective excitation and the detection.

Method of measuring internal information from a target by using nuclear

This invention relates to a method of obtaining information of a specified or target area of a living body near its skin surface by the application of a nuclear magnetic resonance phenomenon (NMR). This invention comprises a static magnetic field generator for generating a static magnetic field H.sub.0, a radio-frequency magnetic field generator for generating a radio-frequency magnetic field H.sub.1 perpendicular to said static magnetic field H.sub.0 and having a nuclear magnetic resonance frequency f.sub.0, and means disposed in close proximity to said target area for focusing one or both of said magnetic fields thereon, and relates to a method of obtaining, with a high signal to noise (SN) ratio and with ease, information of a specified area of a living body from the outside or inside of the body.

Growing community of inventors

Asahikawa, Japan

Kunio Tanaka