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- Title:
Magnetic resonance cholangiopancreatography at 3 Tesla: Image quality comparison between 3D compressed sensing and 2D single-shot acquisitions.
- Document type:
- Journal Article
- Author(s):
- Lohöfer, Fabian K; Kaissis, Georgios A; Rasper, Michael; Katemann, Christoph; Hock, Andreas; Peeters, Johannes M; Schlag, Christoph; Rummeny, Ernst J; Karampinos, Dimitrios; Braren, Rickmer F
- Abstract:
- OBJECTIVES: To compare the image quality between compressed sensing (CS) 3D-magnetic resonance cholangiopancreatography (MRCP) using respiratory-triggered (RT) and breath-hold (BH) acquisitions and 2D single-shot breath-hold (SSBH) MRCP at 3 T MRI. METHODS: 53 datasets were retrospectively assessed. 3D-MRCP with CS (RT-CS10, BH-CS24) and 2D-SSBH MRCP were acquired. Overall image quality, blurring/motion artifacts and discernibility of the pancreaticobiliary tree (PBT) structures were scored on a 4-point scale by 2 radiologists. The contrast ratio between the common bile duct and its adjacent tissue was measured by region-of-interest (ROI) analysis. Signal intensity increase at the boundaries of the ducts was quantified by line profiles to objectively characterize blurring and motion artifacts. RESULTS: Total scan duration was 17 s for BH-CS24, 1m12 s for 2D-SSBH and 3m48 s for RT-CS10. Images acquired with CS were consistently rated superior in terms of image quality, background suppression, blurring and discernibility of PBT structures compared to 2D-SSBH images. RT-CS10 was superior to BH-CS24 for all ratings except for blurring. Objective analysis yielded the highest contrast ratio for RT-CS10 (0.91 ± 0.04) followed by BH-C24 (0.88 ± 0.05) and 2D-SSBH (0.85 ± 0.06); one-way ANOVA P < 0.0001. The line-profile slope through the CBD was significantly higher in BH-CS24 (37.91 ± 6.38% of maximum intensity/mm) compared to RT-CS10 (29.46 ± 8.17% of maximum intensity/mm) and on par with 2D-SSBH (35.8 ± 12.30% of maximum intensity/mm); one-way-ANOVA P = 0.017. CONCLUSION: CS allows acquisition of volumetric image data with improved image quality compared to SSBH. CS24 yields substantial gains in acquisition speed while robust towards artifacts, enabling diagnostic image quality with a single breath-hold acquisition.
- Journal title abbreviation:
- Eur J Radiol
- Year:
- 2019
- Journal volume:
- 115
- Pages contribution:
- 53-58
- Fulltext / DOI:
- doi:10.1016/j.ejrad.2019.04.002
- Pubmed ID:
- http://view.ncbi.nlm.nih.gov/pubmed/31084759
- Print-ISSN:
- 0720-048X
- TUM Institution:
- II. Medizinische Klinik und Poliklinik (Gastroenterologie)
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