MAGNETIC RESONANCE IMAGING APPARATUS AND SYNCHRONOUS MEASUREMENT METHOD
First Claim
Patent Images
1. A magnetic resonance imaging apparatus comprising:
- an imaging control unit that repeats a shot using an imaging sequence, in which one or more echo signals corresponding to a partial region of a measurement space are collected, at predetermined repetition intervals on the basis of a non-Cartesian sampling method while changing the partial region; and
a biological signal receiving unit that receives a periodic biological signal of an object,wherein the imaging control unit starts the imaging sequence after a predetermined delay after the biological signal receiving unit receives the biological signal and repeats the imaging sequence while maintaining the repetition interval.
4 Assignments
0 Petitions
Accused Products
Abstract
An image with a desired contrast is obtained while suppressing body motion artifacts caused by both random motion and periodic motion of an object. In order to do so, an imaging sequence using a non-Cartesian sampling method is executed so as to synchronize with a biological signal only at the start time and a repetition time (TR), which is an execution interval between shots within the imaging sequence, is maintained. In addition, a time difference between a delay time and a start time of each shot is calculated, and a shot with a predetermined time difference or more is executed again after the TR time.
-
Citations
10 Claims
-
1. A magnetic resonance imaging apparatus comprising:
-
an imaging control unit that repeats a shot using an imaging sequence, in which one or more echo signals corresponding to a partial region of a measurement space are collected, at predetermined repetition intervals on the basis of a non-Cartesian sampling method while changing the partial region; and a biological signal receiving unit that receives a periodic biological signal of an object, wherein the imaging control unit starts the imaging sequence after a predetermined delay after the biological signal receiving unit receives the biological signal and repeats the imaging sequence while maintaining the repetition interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A synchronous measurement method in a magnetic resonance imaging apparatus comprising:
-
an imaging step of repeating an imaging sequence, in which one or more echo signals corresponding to a partial region of a measurement space are collected, at predetermined repetition intervals on the basis of a non-Cartesian sampling method while changing the partial region; and a biological signal receiving step of receiving a periodic biological signal of an object, wherein in the imaging step, the imaging sequence starts after a predetermined delay time after the biological signal is received and the imaging sequence is repeated while maintaining the repetition interval.
-
Specification