Magnetic resonance imaging apparatus and magnetic resonance imaging method
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorMitsue Miyazaki
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Abstract
A magnetic resonance imaging apparatus includes a data acquisition unit and an image generating unit. The data acquisition unit sets a delay time from a reference wave based on heart rate information or peripheral pulse wave information previously acquired from an object and acquires MR signals by an imaging scan with a delay time and in synchronization with a blood flow beat. The delay time represents a time phase for image data acquisition timing in synchronization with the beat. The image generating unit generates a blood flow image based on the magnetic resonance signals.
Claims21
A magnetic resonance imaging apparatus comprising:
- a heart rate acquisition unit configured to acquire a heart rate of a patient;
- a delay time setting unit configured to estimate a delay time from a reference wave in a blood flow beat of the patient, the estimated delay time corresponding to at least one of a systole and a diastole, and being estimated by using (i) the acquired heart rate and a calculation formula representing a relationship between delay times and heart rates or (ii) the acquired heart rate and a table showing a relationship between delay times and heart rates;
- a data acquisition unit configured to acquire magnetic resonance signals from the patient with an imaging scan using the estimated delay time in synchronization with the blood flow beat of the patient;
- and
- an image generating unit configured to generate a blood flow image based on the acquired magnetic resonance signals.
A magnetic resonance imaging apparatus comprising:
- a heart rate acquisition unit configured to acquire a heart rate of a patient;
- a delay time setting unit configured to estimate a delay time from a reference wave in a blood flow beat of the patient, the delay time corresponding to at least one of a systole and a diastole, and being estimated by using the acquired heart rate and a table showing a relationship between delay times and heart rates, the relationship being acquired in advance of delay time estimation by an ECG-prep scan;
- a data acquisition unit configured to acquire magnetic resonance signals from the patient with an imaging scan using the estimated delay time in synchronization with the blood flow beat of the patient, the delay time being acquired from said delay time setting unit;
- and
- an image generating unit configured to generate a blood flow image based on the acquired magnetic resonance signals.
A magnetic resonance imaging method comprising:
- acquiring a heart rate of a patient;
- estimating a delay time from a reference wave in a blood flow beat of the patient, the estimated delay time corresponding to at least one of a systole and a diastole, and being estimated by using the acquired heart rate and a calculation formula representing a relationship between delay times and heart rates, or by using the acquired heart rate and a table showing a relationship between delay times and heart rates;
- acquiring magnetic resonance signals from the patient with an imaging scan using the estimated delay time in synchronization with the blood flow beat, the estimated delay time representing a time phase for image data acquisition synchronized with the blood flow beat, and
- generating a blood flow image based on the magnetic resonance signals.
A magnetic resonance imaging method comprising:
- acquiring a heart rate of a patient;
- estimating a delay time from a reference wave in a blood flow beat of the patient, the estimated delay time corresponding to at least one of a systole and a diastole, and being estimated by using the acquired heart rate and a table showing a relationship between delay times and heart rates, the relationship being acquired in advance of delay time estimation by an ECG-prep scan;
- acquiring magnetic resonance signals with an imaging scan using the estimated delay time in synchronization with the blood flow beat;
- and
- generating a blood flow image based on the magnetic resonance signals.
Dependencies are inferred from the claim text.