MRI SYSTEM

PURPOSE:To obtain an image with no artifact by a method wherein a delay of a generation timing of an inclined magnetic field pulse is measured and the generation timing is corrected according to the resulting measurement data to perform a pulse sequence shown by a design value even in a superhigh sp...

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Bibliographic Details
Main Authors TAKEO KAZUHIRO, KONO OSAMU
Format Patent
LanguageEnglish
Published 09.12.1992
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
TESTING
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Summary:PURPOSE:To obtain an image with no artifact by a method wherein a delay of a generation timing of an inclined magnetic field pulse is measured and the generation timing is corrected according to the resulting measurement data to perform a pulse sequence shown by a design value even in a superhigh speed imaging. CONSTITUTION:An inclined coil 13 and an RF coil 21 are arranged separately together with an object 11 to be inspected (human body) within a magnetostatic field generated with a magnetostatic magnet 12. A pulse current of a specified waveform is supplied to the inclined coil 13 from an inclination power source 14 while a waveform datum which is read from an RAM of a sequence 32 a computer 31 is supplied to the inclination power source 14. On the other hand, an RF pulse waveform is transmitted to a modulator 23 from the sequence 32 and after a high frequency signal of a high frequency oscillator 24 is modulated, the signal is transmitted to the RF coil 21 through an RF amplifier 22. Here, an output waveform of the inclination power source 14 is detected with a current monitor 15. Thereafter, an operation timing of the inclination power source 14 is corrected according to a response delay data based on the detection results.
Bibliography:Application Number: JP19910157638