Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1988-05-05
1989-11-21
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
333 173, G01R 3320
Patent
active
048825417
ABSTRACT:
An automatic impedance adjuster for an MRI system has an impedance adjusting section, an oscillator, a detector, and a controller. The impedance adjusting section is provided to a probe head, and allows variable adjustment of real and imaginary parts of an impedance of the probe head. The oscillator has a predetermined output impedance, and supplies a signal to the probe head. The detector is connected between the probe head and the oscillator, and outputs detection signals respectively corresponding to real and imaginary parts of the impedance of the probe head. The controller supplies a control signal to the impedance adjusting section in response to the signals corresponding to the real and imaginary parts obtained from the detector, and performs control such that the real and imaginary parts of the impedance of the probe head coincide with a predetermined impedance.
REFERENCES:
patent: 3919644 (1975-11-01), Smolka
patent: 4028645 (1977-06-01), Tressa
patent: 4356458 (1982-10-01), Armitage
patent: 4493112 (1985-01-01), Bruene
patent: 4633181 (1986-12-01), Murphy et al.
patent: 4783629 (1988-11-01), Arakawa
Lodstrom, A Complex Impedance Meter, Proceedings, RF Expo East, Nov. 10-12, 1986.
Kabushiki Kaisha Toshiba
Tokar Michael J.
LandOfFree
Automatic impedance adjuster for MRI system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic impedance adjuster for MRI system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic impedance adjuster for MRI system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1428267