Magnetic resonance method control device and system for imaging a volume segment of a subject
AssigneesSiemens Medical Solutions USA, Inc., Siemens Aktiengesellschaft
InventorsAndreas Greiser, Sven Zuehlsdorff
Life of this patent
Estimating the term…
Abstract
For imaging a volume segment by means of a magnetic resonance system, of the volume segment is transferred into a dynamic steady state relative to the magnetization by means of the magnetic resonance system. The following steps are repeatedly executed until the volume segment has been completely measured. The slice is excited by means of the magnetic resonance system. MR signals of the slice are read out. The slice is offset in an overlapping manner such that an overlap range is created by the slice before the offset and the slice after the offset, the overlap range being a predetermined percentile of both the slice before the offset and the slice after the offset.
Claims20
A magnetic resonance method for imaging a volume segment of a subject, comprising the steps of:
- with a magnetic resonance data acquisition unit that interacts with a subject, imposing a magnetization in a volume segment of the subject and transforming a slice of the volume segment into a dynamic steady state relative to said magnetization;
- after transforming said slice, acquiring magnetic resonance data from the volume segment in a plurality of repetitions and, in each repetition, exciting nuclear spins in the slice to cause said nuclear spins to emit magnetic resonance signals, reading out said magnetic resonance signals from said slice and offsetting said slice with an overlap with respect to a preceding repetition, with an overlap range comprising a predetermined percentile of said slice before offsetting said slice and after offsetting said slice;
- and
- repeating said repetitions until magnetic resonance data has been completely acquired from all of said volume segment.
A control device for imaging a volume segment of a subject, comprising the steps of:
- an operating unit configured to a magnetic resonance data acquisition unit that interacts with a subject, to impose a magnetization in a volume segment of the subject and to transform a slice of the volume segment into a dynamic steady state relative to said magnetization;
- said operating unit being configured to operate said data acquisition unit, after transforming said slice, to acquire magnetic resonance data from the volume segment in a plurality of repetitions and, in each repetition, excite nuclear spins in the slice to cause said nuclear spins to emit magnetic resonance signals, to read out said magnetic resonance signals from said slice and to offset said slice with an overlap with respect to a preceding repetition, with an overlap range comprising a predetermined percentile of said slice before offsetting said slice and after offsetting said slice;
- and
- said operating unit being configured to operate said data acquisition unit to repeat said repetitions until magnetic resonance data has been completely acquired from all of said volume segment.
A magnetic resonance system for imaging a volume segment of a subject, comprising:
- a magnetic resonance data acquisition unit that interacts with a subject;
- an operating unit configured to operate said data acquisition unit to impose a magnetization in a volume segment of the subject and transform a slice of the volume segment into a dynamic steady state relative to said magnetization;
- said operating unit being configured to operate said data acquisition unit, after transforming said slice, to acquire magnetic resonance data from the volume segment in a plurality of repetitions and, in each repetition, to excite nuclear spins in the slice to cause said nuclear spins to emit magnetic resonance signals, to read out said magnetic resonance signals from said slice and to offset said slice with an overlap with respect to a preceding repetition, with an overlap range comprising a predetermined percentile of said slice before offsetting said slice and after offsetting said slice;
- and
- said operating unit being configured to operate said data acquisition unit to repeat said repetitions until magnetic resonance data has been completely acquired from all of said volume segment.
A non-transitory computer-readable medium encoded with programming instructions and being loaded into a computerized control system of a magnetic resonance apparatus having a magnetic resonance data acquisition unit that interacts with a subject, said programming instructions causing said computerized control system to:
- operate a magnetic resonance data acquisition unit that interacts with a subject to impose a magnetization in a volume segment of the subject and transform a slice of the volume segment into a dynamic steady state relative to said magnetization;
- operate said data acquisition unit after transforming said slice, to acquire magnetic resonance data from the volume segment in a plurality of repetitions and, in each repetition, excite nuclear spins in the slice to cause said nuclear spins to emit magnetic resonance signals, read out said magnetic resonance signals from said slice and offset said slice with an overlap with respect to a preceding repetition, with an overlap range comprising a predetermined percentile of said slice before offsetting said slice and after offsetting said slice;
- and
- operate said data acquisition unit to repeat said repetitions until magnetic resonance data has been completely acquired from all of said volume segment.
Dependencies are inferred from the claim text.