Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2007-03-06
2007-03-06
Arana, Louis M. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S318000
Reexamination Certificate
active
11358481
ABSTRACT:
In a method for controlling a radio-frequency device, and a magnetic resonance tomography system and a radio-frequency control device wherein the method is implemented, the RF device of a magnetic resonance tomography system is emitted during a magnetic resonance measurement of an examination subject that is moving relative to the transmission field of the RF device. The RF device emits RF pulses at chronological intervals, and measurement values are measured at chronological intervals. At chronological intervals, position values are determined that represent a current position of the examination subject relative to the transmission field. On the basis of the measurement values and the position values, exposure values are determined that represent a physiological degree of effectiveness that the RF pulses have on the subject exposed to the RF pulses. Based on a multiplicity of exposure values, exposure control values are respectively formed. The RF device is limited in its functioning if an exposure control value reaches or exceeds an exposure limit value.
REFERENCES:
patent: 6426623 (2002-07-01), Bernstein
patent: 6759847 (2004-07-01), Brinker et al.
patent: 6762605 (2004-07-01), Brinker et al.
patent: 6841999 (2005-01-01), Arneth et al.
patent: 7030615 (2006-04-01), Gortler
patent: 7075301 (2006-07-01), Zhu
patent: 2003/0098687 (2003-05-01), Arneth et al.
patent: 2005/0197077 (2005-09-01), Bielmeier et al.
patent: WO 2005/001502 (2005-01-01), None
“Specific Absorption Rates and Induced Current Densities for an Anatomy-Based Model of the Human for Exposure to Time-Varying Magnetic Fields of MRI,” Gandhi et al, Magnetic Resonance In Medicine, vol 41 (1999) pp. 816-823.
Bielmeier Wolfgang
Ludwig Klaus
Schnetter Volker
Arana Louis M.
Schiff & Hardin LLP
Siemens Aktiengesellschaft
LandOfFree
Method for controlling an RF transmission device, and MR... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for controlling an RF transmission device, and MR..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for controlling an RF transmission device, and MR... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3759692