Quality assurance multicenter comparison of different MR scanners for quantitative diffusion-weighted imaging

Giacomo Belli, Simone Busoni, Antonio Ciccarone, Angela Coniglio, Marco Esposito, Marco Giannelli, Lorenzo N. Mazzoni, Luca Nocetti, Roberto Sghedoni, Roberto Tarducci, Giovanna Zatelli, Rosa A. Anoja, Gina Belmonte, Nicola Bertolino, Margherita Betti, Cristiano Biagini, Alberto Ciarmatori, Fabiola R. Cretti, Emma Fabbri, Luca FedeliSilvano Filice, Christian P L Fulcheri, Chiara Gasperi, Paola A. Mangili, Silvia Mazzocchi, Gabriele Meliadò, Sabrina Morzenti, Linhsia Noferini, Nadia Oberhofer, Laura Orsingher, Nicoletta Paruccini, Goffredo Princigalli, Mariagrazia Quattrocchi, Adele Rinaldi, Danilo Scelfo, Gloria Vilches Freixas, Leonardo Tenori, Ileana Zucca, Claudio Luchinat, Cesare Gori, Gianni Gobbi

Research output: Contribution to journalArticle

Abstract

Purpose To propose a magnetic resonance imaging (MRI) quality assurance procedure that can be used for multicenter comparison of different MR scanners for quantitative diffusion-weighted imaging (DWI). Materials and Methods Twenty-six centers (35 MR scanners with field strengths: 1T, 1.5T, and 3T) were enrolled in the study. Two different DWI acquisition series (b-value ranges 0-1000 and 0-3000 s/mm2, respectively) were performed for each MR scanner. All DWI acquisitions were performed by using a cylindrical doped water phantom. Mean apparent diffusion coefficient (ADC) values as well as ADC values along each of the three main orthogonal directions of the diffusion gradients (x, y, and z) were calculated. Short-term repeatability of ADC measurement was evaluated for 26 MR scanners. Results A good agreement was found between the nominal and measured mean ADC over all the centers. More than 80% of mean ADC measurements were within 5% from the nominal value, and the highest deviation and overall standard deviation were 9.3% and 3.5%, respectively. Short-term repeatability of ADC measurement was found <2.5% for all MR scanners. Conclusion A specific and widely accepted protocol for quality controls in DWI is still lacking. The DWI quality assurance protocol proposed in this study can be applied in order to assess the reliability of DWI-derived indices before tackling single- as well as multicenter studies.

Original languageEnglish
Pages (from-to)213-219
Number of pages7
JournalJournal of Magnetic Resonance Imaging
Volume43
Issue number1
DOIs
Publication statusPublished - Jan 1 2016

Keywords

  • apparent diffusion coefficient
  • diffusion weighted imaging
  • magnetic resonance imaging
  • quality controls

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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    Belli, G., Busoni, S., Ciccarone, A., Coniglio, A., Esposito, M., Giannelli, M., Mazzoni, L. N., Nocetti, L., Sghedoni, R., Tarducci, R., Zatelli, G., Anoja, R. A., Belmonte, G., Bertolino, N., Betti, M., Biagini, C., Ciarmatori, A., Cretti, F. R., Fabbri, E., ... Gobbi, G. (2016). Quality assurance multicenter comparison of different MR scanners for quantitative diffusion-weighted imaging. Journal of Magnetic Resonance Imaging, 43(1), 213-219. https://doi.org/10.1002/jmri.24956