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High-resolution 3D-GRE imaging of the abdomen using controlled aliasing acceleration technique – a feasibility study

AlObaidy, Mamdoh ; Ramalho, Miguel ; Busireddy, Kiran K. R. ; Liu, Baodong ; Burke, Lauren M. ; Altun, Ersan ; Dale, Brian M. ; Semelka, Richard C.

European radiology, 2015-12, Vol.25 (12), p.3596-3605 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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  • Título:
    High-resolution 3D-GRE imaging of the abdomen using controlled aliasing acceleration technique – a feasibility study
  • Autor: AlObaidy, Mamdoh ; Ramalho, Miguel ; Busireddy, Kiran K. R. ; Liu, Baodong ; Burke, Lauren M. ; Altun, Ersan ; Dale, Brian M. ; Semelka, Richard C.
  • Assuntos: Abdomen ; Abdomen - pathology ; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Breath Holding ; Contrast Media ; Diagnostic Radiology ; Electrons ; Feasibility Studies ; Female ; Humans ; Imaging ; Imaging, Three-Dimensional - methods ; Internal Medicine ; Interventional Radiology ; Magnetic Resonance ; Magnetic Resonance Imaging - methods ; Male ; Medicine ; Medicine & Public Health ; Middle Aged ; Motion ; Neuroradiology ; Radiology ; Reproducibility of Results ; Ultrasound ; Young Adult
  • É parte de: European radiology, 2015-12, Vol.25 (12), p.3596-3605
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Objectives To assess the feasibility of high-resolution 3D-gradient-recalled echo (GRE) fat-suppressed T1-weighted images using controlled aliasing acceleration technique (CAIPIRINHA-VIBE), and compare image quality and lesion detection to standard-resolution 3D-GRE images using conventional acceleration technique (GRAPPA-VIBE). Materials and methods Eighty-four patients (41 males, 43 females; age range: 14–90 years, 58.8 ± 15.6 years) underwent abdominal MRI at 1.5 T with CAIPIRINHA-VIBE [spatial resolution, 0.76 ± 0.04 mm] and GRAPPA-VIBE [spatial resolution, 1.17 ± 0.14 mm]. Two readers independently reviewed image quality, presence of artefacts, lesion conspicuity, and lesion detection. Kappa statistic was used to assess interobserver agreement. Wilcoxon signed-rank test was used for image qualitative pairwise comparisons. Logistic regression with post-hoc testing was used to evaluate statistical significance of lesions evaluation. Results Interobserver agreement ranged between 0.45-0.93. Pre-contrast CAIPIRINHA-VIBE showed significantly ( p  < 0.001) sharper images and lesion conspicuity with decreased residual aliasing, but more noise enhancement and inferior image quality. Post-contrast CAIPIRINHA-VIBE showed significantly ( p  < 0.001) sharper images and higher lesion conspicuity, with less respiratory motion and residual aliasing artefacts. Inferior fat-suppression was noticeable on CAIPIRINHA-VIBE sequences ( p  < 0.001). Conclusion High in-plane resolution abdominal 3D-GRE fat-suppressed T1-weighted imaging using controlled-aliasing acceleration technique is feasible and yields sharper images compared to standard-resolution images using standard acceleration, with higher post-contrast image quality and trend for improved hepatic lesions detection. Key Points • High-resolution imaging of the upper abdomen is clinically feasible using 2D-controlled aliasing acceleration technique. • High-resolution imaging yields significantly sharper images and increased hepatic lesions conspicuity. • High-resolution imaging yields significantly less respiratory motion and residual aliasing artefacts. • Controlled-aliasing offers substantial acquisition-time reduction in patients with breath-holding difficulties.
  • Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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