Journal article
Simultaneous brain and neck time-of-flight MRA using spiral multiband with localized quadratic encoding
Magnetic resonance in medicine, Vol.92(3), pp.1095-1103
09/2024
DOI: 10.1002/mrm.30098
PMID: 38576077
Appears in UI Libraries Support Open Access
Abstract
To develop a method that achieves simultaneous brain and neck time-of-flight (ToF) magnetic resonance angiography (MRA) within feasible scan timeframes.
Localized quadratic (LQ) encoding is efficient for both signal-to-noise ratio (SNR) and in-flow enhancement. We proposed a spiral multiband LQ method to enable simultaneous intracranial and carotid ToF-MRA within a single scan. To address the venous signal contamination that becomes a challenge with multiband (MB) ToF, tilt-optimized non-saturated excitation (TONE) and partial-Fourier slice selection (PFSS) were further introduced in the LQ framework to mitigate the venous signal and improve artery contrast. A sequential spiral MB and LQ reconstruction pipeline was employed to obtain the brain-and-neck image volumes.
The proposed MB method was able to achieve simultaneous brain and neck ToF-MRA within a 2:50-min scan. The complementarily boosted SNR-efficiency by MB and LQ acquisitions allows for the increased spatial coverage without increase in scan time or noticeable compromise in SNR. The incorporation of both TONE and PFSS effectively alleviated the venous contamination with improved small vessel sensitivity. Selection of scan parameters such as the LQ factor and flip angle reflected the trade-off among SNR, blood contrast, and venous suppression.
A novel MB spiral LQ approach was proposed to enable fast intracranial and carotid ToF-MRA with minimized venous corruption. The method has shown promise in MRA applications where large spatial coverage is necessary.
Details
- Title: Subtitle
- Simultaneous brain and neck time-of-flight MRA using spiral multiband with localized quadratic encoding
- Creators
- Xi Peng - Department of Radiology, University of Iowa, Iowa City, Iowa, USADinghui Wang - Mayo ClinicDaniel Borup - PhilipsGuruprasad Krishnamoorthy - PhilipsJames G Pipe - Mayo Clinic
- Resource Type
- Journal article
- Publication Details
- Magnetic resonance in medicine, Vol.92(3), pp.1095-1103
- Publisher
- Wiley
- DOI
- 10.1002/mrm.30098
- PMID
- 38576077
- eISSN
- 1522-2594
- Grant note
- Royal Philips
- Language
- English
- Electronic publication date
- 04/04/2024
- Date published
- 09/2024
- Academic Unit
- Radiology
- Record Identifier
- 9984583619002771
Metrics
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