MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD
First Claim
1. A magnetic resonance imaging apparatus comprising:
- a scan device for repeatedly executing, every repetition time, an imaging sequence including a pulse sequence for sequentially transmitting an excitation pulse and a plurality of first refocus pulses to a subject including fluid, so as to correspond to a fast spin echo method in an imaging space formed with a static magnetic field, thereby obtaining magnetic resonance signals generated in a first subject region including the fluid at the subject every repetition time; and
an image generation device for generating images about the first subject region, based on the magnetic resonance signals obtained by executing the imaging sequence by the scan device,wherein before execution of the pulse sequence corresponding to the fast spin echo method at the every time of repetition in the imaging sequence, the scan device transmits a first inversion recovery pulse so as to invert spins in a second subject region that includes the first subject region and is broader than the first subject region, at the subject.
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Accused Products
Abstract
With the objective of generating an imaging area including fluid with desired image quality at a subject and enhancing image quality, a first inversion recovery pulse is transmitted so as to invert spins in a second subject region which includes a first subject region used as the imaging area and is broader than the first subject region, before execution of a pulse sequence corresponding to an FSE method at every TR in an imaging sequence. After the execution of the pulse sequence corresponding to the FSE method, a second refocus pulse is transmitted so as to cause spins in a third subject region including the first subject region and wider than the first subject region to reconverge. A fast recovery pulse is transmitted to selectively recover spins in the first subject region. Thereafter, a second inversion recovery pulse is transmitted so as to invert the spins in the second subject region.
24 Citations
20 Claims
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1. A magnetic resonance imaging apparatus comprising:
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a scan device for repeatedly executing, every repetition time, an imaging sequence including a pulse sequence for sequentially transmitting an excitation pulse and a plurality of first refocus pulses to a subject including fluid, so as to correspond to a fast spin echo method in an imaging space formed with a static magnetic field, thereby obtaining magnetic resonance signals generated in a first subject region including the fluid at the subject every repetition time; and an image generation device for generating images about the first subject region, based on the magnetic resonance signals obtained by executing the imaging sequence by the scan device, wherein before execution of the pulse sequence corresponding to the fast spin echo method at the every time of repetition in the imaging sequence, the scan device transmits a first inversion recovery pulse so as to invert spins in a second subject region that includes the first subject region and is broader than the first subject region, at the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A magnetic resonance imaging method comprising the steps of:
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repeatedly executing, every repetition time, an imaging sequence including a pulse sequence for sequentially transmitting an excitation pulse and a plurality of first refocus pulses to a subject including fluid, so as to correspond to a fast spin echo method in an imaging space formed with a static magnetic field, thereby obtaining magnetic resonance signals generated in a first subject region including the fluid at the subject every repetition time; thereafter generating images about the first subject region, based on the magnetic resonance signals obtained by executing the imaging sequence; and before execution of the pulse sequence corresponding to the fast spin echo method at the every time of repetition in the imaging sequence, transmitting a first inversion recovery pulse so as to invert spins in a second subject region which includes the first subject region and is broader than the first subject region, at the subject. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification