摘要:
In a method to predict the diastolic rest period in the cardiac cycle of a patient under examination, the linear relation between heart rate and position of the diastolic rest period in the cardiac cycle is determined by determining the position of the diastolic rest period in at least two different heart rates of the examined patient, determining the breathing motion using rate and/or acceleration sensors and predicting the next diastolic rest period under consideration of the breathing motion and the definite relation between the heart rate and the position of the diastolic rest period of the patient under examination.
摘要:
In a method for acquisition of magnetic resonance images of the heart, MR signals of the heart are acquired using an imaging sequence, wherein the magnetization is inverted by an RF inversion pulse before the acquisition of the MR signals; and of the heart activity is detected, and the point in time of the switching of the RF inversion pulse dependent on the detected heart activity.
摘要:
In a method to predict the diastolic rest period in the cardiac cycle of a patient under examination, the linear relation between heart rate and position of the diastolic rest period in the cardiac cycle is determined by determining the position of the diastolic rest period in at least two different heart rates of the examined patient, determining the breathing motion using rate and/or acceleration sensors and predicting the next diastolic rest period under consideration of the breathing motion and the definite relation between the heart rate and the position of the diastolic rest period of the patient under examination.
摘要:
A method is disclosed for implementing an imaging examination method. In at least one embodiment, the method includes creating an overview data record containing angiography data relating to a patient; simulating flow conditions in vessels of the patient; determining a strain on the vascular walls with the aid of the simulation; identifying vascular regions, in which the strain on the vascular wall exceeds a threshold value and implementing an imaging examination in at least one of the identified vascular regions.
摘要:
In a method and apparatus for acquisition of a magnetic resonance (MR) image of tissue containing iron oxide particles frequency-selective inversion of the longitudinal magnetization in the tissue is done before acquisition of the MR image, and acquisition of the MR image is done at a zero crossing of the longitudinal magnetization. For water portions of the tissue, multiple inversion pulses that invert the longitudinal magnetization of the aqueous portions are radiated into the tissue. For fat portions of the tissue, multiple inversion pulses are radiated into the tissue that invert longitudinal magnetization of the fat portions. The inversion pulses for the respective tissue portions individually exhibit a fixed time interval from one another.
摘要:
In a method for acquisition of magnetic resonance images of the heart, MR signals of the heart are acquired using an imaging sequence, wherein the magnetization is inverted by an RF inversion pulse before the acquisition of the MR signals; and of the heart activity is detected, and the point in time of the switching of the RF inversion pulse dependent on the detected heart activity.
摘要:
A method is disclosed for implementing an imaging examination method. In at least one embodiment, the method includes creating an overview data record containing angiography data relating to a patient; simulating flow conditions in vessels of the patient; determining a strain on the vascular walls with the aid of the simulation; identifying vascular regions, in which the strain on the vascular wall exceeds a threshold value and implementing an imaging examination in at least one of the identified vascular regions.
摘要:
In a method and apparatus for acquisition of a magnetic resonance (MR) image of tissue containing iron oxide particles frequency-selective inversion of the longitudinal magnetization in the tissue is done before acquisition of the MR image, and acquisition of the MR image is done at a zero crossing of the longitudinal magnetization. For water portions of the tissue, multiple inversion pulses that invert the longitudinal magnetization of the water portions are radiated into the tissue. For fat portions of the tissue, multiple inversion pulses are radiated into the tissue that invert longitudinal magnetization of the fat portions. The inversion pulses for the respective tissue portions individually exhibit a fixed time interval from one another.
摘要:
The invention relates to an MR apparatus which includes a cylindrical main field magnet for generating a uniform, steady magnetic field whose cylindrical shape defines a symmetry axis, a gradient coil system which encloses the symmetry axis and includes a plurality of gradient coils, an RF coil system which is situated inside the gradient coil system and includes a plurality of mutually offset conductors which extend parallel to the symmetry axis, and a table top for accommodating an object to be examined.