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Machine translation
1. (WO1979000412) NUCLEUS MAGNETIC RESONANCE SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000412    International Application No.:    PCT/JP1978/000045
Publication Date: 12.07.1979 International Filing Date: 08.12.1978
IPC:
G01R 33/38 (2006.01), G01R 33/389 (2006.01), G01R 33/46 (2006.01)
Applicants:
Inventors:
Priority Data:
77/153731 20.12.1977 JP
Title (EN) NUCLEUS MAGNETIC RESONANCE SYSTEM
(FR) SYSTEME DE RESONANCE NUCLEAIRE MAGNETIQUE
Abstract: front page image
(EN)In a circuit generating a frequency signal for modulation used for getting the resonance signal of a basic material in a nucleus magnetic resonance system adopting a lock system which stabilizes the strength of a direct-current magnetic field the frequency signal for modulation is obtained by dividing a high frequency signal of a basic frequency source (1) by means of a variable frequency divider (15) rather than, as known, by a voltage control oscillator in which the signal is characterized by its instability. This frequency signal for modulation is led to a modulator (14) and modulates the high frequency signal from the basic signal source (1). The modulated high frequency signal being led to a prove (4), the resonance signal of the basic signal material is formed. The divider (15) is equipped with a changing switch (16) for changing the frequency dividing ratio so that the frequency signal for modulation is adjusted in accordance with various basic materials.
(FR)Dans un circuit produisant un signal de frequence de modulation utilisee en vue d"obtenir un signal de resonance d"un materiau de base dans un systeme de resonance nucleaire magnetique adoptant un systeme de verrouillage qui stabilise la force d"un champ magnetique de courant continu, on obtient le signal de frequence de modulation en divisant le signal haute frequence d"une source de frequence de base (1) au moyen d"un demultiplicateur de frequence reglable (15) au lieu de l"oscillateur de controle de tension, deja connu, dans lequel le signal est caracterise par son instabilite. Ce signal de frequence de modulation est amene dans le modulateur (14) et il module le signal haute frequence provenant de la source de frequence de base (1). Le signal haute frequence module etant amene a un essai (4), le signal de resonance du materiau de base est forme. Le demultiplicateur (15) est equipe d"un commutateur (16) pour le changement du rapport de repartition de frequence pour que le signal de modulation soit ajuste selon les divers materiaux de base.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)