MRI NON-CONTRAST TIME-SLIP ANGIOGRAPHY USING VARIABLY POSITIONED CINE SUB-SEQUENCE
First Claim
1. A magnetic resonance imaging (MRI) system comprising an MRI gantry and controlling computer system including at least one programmed computer configured to:
- effect a cardiac-triggered time-SLIP (spatial labeling inversion pulse) MRI data acquisition sequence for imaging blood perfusion in imaged patient tissue and employing therewithin an MRI cine sub-sequence, which cine sub-sequence is positioned in the time domain to encompass at least part of a predetermined cardiac time interval of the patient;
process acquired data from the time-SLIP data acquisition sequence to generate a sequence of MRI cine frame images having respectively associated different effective BBTI (black blood time to inversion) time intervals;
identify one of said MRI cine frame images as acceptable, thereby effectively also determining an appropriate BBTI time interval for the patient; and
output a time-SLIP image based on said determined appropriate BBTI time interval to at least one of (a) a display, (b) a remote system or (c) a non-transitory storage medium.
2 Assignments
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Accused Products
Abstract
A magnetic resonance imaging (MRI) system using an MRI gantry and controlling computer system includes at least one programmed computer configured to effect a cardiac-triggered time-SLIP (spatial labeling inversion pulse) MRI data acquisition sequence for imaging blood perfusion in imaged patient tissue and employing therewithin an MRI cine sub-sequence. The sub-sequence is positioned in the time domain to encompass at least part of a predetermined (e.g., diastolic) cardiac time interval of the patient. Processing acquired data from the time-SLIP data acquisition sequence generates a sequence of MRI cine frame images having respectively associated different effective BBTI (black blood time to inversion) time intervals. Identifying one of the MRI cine frame images as acceptable, thereby effectively also determines an appropriate BBTI time interval for the patient. The system then outputs a time-SLIP image based on the determined appropriate BBTI time interval to at least one of (a) a display, (b) a remote system or (c) a non-transitory storage medium.
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Citations
24 Claims
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1. A magnetic resonance imaging (MRI) system comprising an MRI gantry and controlling computer system including at least one programmed computer configured to:
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effect a cardiac-triggered time-SLIP (spatial labeling inversion pulse) MRI data acquisition sequence for imaging blood perfusion in imaged patient tissue and employing therewithin an MRI cine sub-sequence, which cine sub-sequence is positioned in the time domain to encompass at least part of a predetermined cardiac time interval of the patient; process acquired data from the time-SLIP data acquisition sequence to generate a sequence of MRI cine frame images having respectively associated different effective BBTI (black blood time to inversion) time intervals; identify one of said MRI cine frame images as acceptable, thereby effectively also determining an appropriate BBTI time interval for the patient; and output a time-SLIP image based on said determined appropriate BBTI time interval to at least one of (a) a display, (b) a remote system or (c) a non-transitory storage medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A magnetic resonance imaging (MRI) method comprising use of an MRI gantry and controlling computer system including at least one programmed computer configured to:
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effect a cardiac-triggered time-SLIP (spatial labeling inversion pulse) MRI data acquisition sequence for imaging blood perfusion in imaged patient tissue and employing there-within an MRI cine sub-sequence which cine sub-sequence is positioned in the time domain to encompass at least part of a predetermined cardiac time interval of the patient; process acquired data from the time-SLIP data acquisition sequence to generate a sequence of MRI cine frame images having respectively associated different effective BBTI (black blood time to inversion) time intervals; identify one of said MRI cine frame images as acceptable, thereby effectively also determining an appropriate BBTI time interval for the patient; and output a time-SLIP image based on said determined appropriate BBTI time interval to at least one of (a) a display, (b) a remote system, or (c) a non-transitory storage medium. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A non-transitory computer memory medium containing computer program control code which, when executed by at least one programmed computer in a magnetic resonance imaging (MRI) system:
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effects a cardiac-triggered time-SLIP (spatial labeling inversion pulse) MRI data acquisition sequence for imaging blood perfusion in imaged patient tissue and employing there-within an MRI cine sub-sequence which cine sub-sequence is positioned in the time domain to encompass at least part of a predetermined cardiac time interval of the patient; processes acquired data from the time-SLIP data acquisition sequence to generate a sequence of MRI cine frame images having respectively associated different effective BBTI (black blood time to inversion) time intervals; identifies one of said MRI cine frame images as acceptable, thereby effectively also determining an appropriate BBTI time interval for the patient; and outputs a time-SLIP image based on said determined appropriate BBTI time interval to at least one of (a) a display, (b) a remote system, or (c) a non-transitory storage medium. - View Dependent Claims (24)
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Specification