Methods and apparatus for reducing scan time of phase contrast mri
US-2015097565-A1 · Apr 9, 2015 · US
Magnetic resonance phase contrast angiography with rotating coding gradients
US9500734B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9500734-B2 |
| Application number | US-201314036279-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 25, 2013 |
| Priority date | Sep 25, 2012 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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Abstract
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In a method and magnetic resonance (MR) system to generate an MR phase contrast angiography image of an examination subject, velocity-dependent phase information is impressed on moving spins in the examination subject by switching additional bipolar coding gradients that are in addition to the basic phase coding and readout gradients. For the creation of the MR phase contrast angiography images, the MR signals of the examination subject are read out in raw data space with a non-Cartesian acquisition pattern during a readout gradient. The additional bipolar coding gradients switched such that they proceed along a coordinate system that corresponds to the non-Cartesian acquisition pattern, and such that a coordinate axis of this coordinate system proceed along the readout gradient.
First claim
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We claim as our invention: 1. A method to generate a magnetic resonance (MR) phase contrast angiography image of an examination subject, comprising: operating an MR data acquisition unit, in which an examination subject is located, by executing an MR angiography pulse sequence that includes activation of a phase coding gradient and a readout gradient, and impressing velocity-dependent phase information on moving nuclear spins in the examination subject by activating additional bip…
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- G01R33/5635Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US9500734B2 cover?
- In a method and magnetic resonance (MR) system to generate an MR phase contrast angiography image of an examination subject, velocity-dependent phase information is impressed on moving spins in the examination subject by switching additional bipolar coding gradients that are in addition to the basic phase coding and readout gradients. For the creation of the MR phase contrast angiography images…
- Who is the assignee on this patent?
- Greiser Andreas, Schmitt Peter, Siemens Ag
- What technology area does this patent fall under?
- Primary CPC classification G01R33/5635. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).