Eur Radiol DOI 10.1007/s00330-015-3780-6
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High-resolution 3D-GRE imaging of the abdomen using controlled aliasing acceleration technique – a feasibility study Mamdoh AlObaidy 1 & Miguel Ramalho 1 & Kiran K. R. Busireddy 1 & Baodong Liu 1 & Lauren M. Burke 1 & Ersan Altun 1 & Brian M. Dale 2 & Richard C. Semelka 1
Received: 23 September 2014 / Revised: 31 March 2015 / Accepted: 7 April 2015 # European Society of Radiology 2015
Abstract Objectives To assess the feasibility of high-resolution 3Dgradient-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 conspi-
* Richard C. Semelka [email protected] Mamdoh AlObaidy [email protected] Miguel Ramalho [email protected] Kiran K. R. Busireddy [email protected] Baodong Liu [email protected] Lauren M. Burke [email protected] Ersan Altun [email protected] Brian M. Dale [email protected] 1
Department of Radiology, University of North Carolina at Chapel Hill, CB 7510-2001 Old Clinic Bldg., Chapel Hill, NC 27599-7510, USA
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MR Research and Development, Siemens Medical Solutions, Morrisville, NC, USA
cuity, 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
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High-resolution 3D-GRE imaging of the abdomen using controlled aliasing acceleration technique – a feasibility study Mamdoh AlObaidy 1 & Miguel Ramalho 1 & Kiran K. R. Busireddy 1 & Baodong Liu 1 & Lauren M. Burke 1 & Ersan Altun 1 & Brian M. Dale 2 & Richard C. Semelka 1
Received: 23 September 2014 / Revised: 31 March 2015 / Accepted: 7 April 2015 # European Society of Radiology 2015
Abstract Objectives To assess the feasibility of high-resolution 3Dgradient-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 conspi-
* Richard C. Semelka [email protected] Mamdoh AlObaidy [email protected] Miguel Ramalho [email protected] Kiran K. R. Busireddy [email protected] Baodong Liu [email protected] Lauren M. Burke [email protected] Ersan Altun [email protected] Brian M. Dale [email protected] 1
Department of Radiology, University of North Carolina at Chapel Hill, CB 7510-2001 Old Clinic Bldg., Chapel Hill, NC 27599-7510, USA
2
MR Research and Development, Siemens Medical Solutions, Morrisville, NC, USA
cuity, 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
