High-resolution 3D-GRE imaging of the abdomen using controlled aliasing acceleration technique - a feasibility study.
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 accele...
| Publicado en: | European Radiology Vol. 25; no. 12; pp. 3596 - 3606 |
|---|---|
| Autores principales: | , , , , , , , , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Springer Nature
Dec2015
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=110814247&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 110814247 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Dec2015 vid: 25 iid: 12 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 110814247 110814247 NLM25916391 110814247 10.1007/s00330-015-3780-6 NLM25916391 110814247 ppf: 3596 ppct: 10 formats: fmt: @attributes: type: P tig: atl: High-resolution 3D-GRE imaging of the abdomen using controlled aliasing acceleration technique - a feasibility study. aug: au: AlObaidy, Mamdoh Ramalho, Miguel Busireddy, Kiran Liu, Baodong Burke, Lauren Altun, Ersan Dale, Brian Semelka, Richard Busireddy, Kiran K R Burke, Lauren M Dale, Brian M Semelka, Richard C affil: Department of Radiology, University of North Carolina at Chapel Hill, CB 7510-2001 Old Clinic Bldg. Chapel Hill 27599-7510 USA sug: subj: Imaging, Three-Dimensional Methods Magnetic Resonance Imaging Methods Abdomen Pathology Aged, 80 and Over Adult Reproducibility of Results Motion Pilot Studies Contrast Media Female Artifacts Middle Age Breath Holding Young Adult Male Adolescence Aged Human Aged, 80 & over Adult: 19-44 years Middle Aged: 45-64 years Adolescent: 13-18 years Aged: 65+ years Female Male ab: 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. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|