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Reproducibility of intravoxel incoherent motion of liver on a 3.0T scanner : free-breathing and respiratory-triggered sequences acquired with different numbers of excitations

Reproducibility of intravoxel incoherent motion of ...

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dc.contributor.author Cieszanowski, Andrzej pl
dc.contributor.author Pasicz, Katarzyna pl
dc.contributor.author Podgórska, Joanna pl
dc.contributor.author Fabiszewska, Ewa pl
dc.contributor.author Skrzyński, Witold pl
dc.contributor.author Jasieniak, Jakub pl
dc.contributor.author Anysz-Grodzicka, Agnieszka pl
dc.contributor.author Grabska, Iwona pl
dc.contributor.author Pałucki, Jakub pl
dc.contributor.author Naduk-Ostrowska, Martyna pl
dc.contributor.author Jagielska, Beata pl
dc.contributor.author Kukołowicz, Paweł pl
dc.date.accessioned 2018-11-28T16:59:35Z
dc.date.available 2018-11-28T16:59:35Z
dc.date.issued 2018 pl
dc.identifier.issn 1733-134X pl
dc.identifier.uri https://ruj.uj.edu.pl/xmlui/handle/item/62033
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 4.0 Międzynarodowa *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/pl/legalcode *
dc.title Reproducibility of intravoxel incoherent motion of liver on a 3.0T scanner : free-breathing and respiratory-triggered sequences acquired with different numbers of excitations pl
dc.type JournalArticle pl
dc.description.physical e437-e445 pl
dc.description.additional Bibliogr. s. e445 pl
dc.abstract.en Purpose: To optimise the intravoxel incoherent motion (IVIM) imaging of the liver on a 3.0T scanner by assessing parameter reproducibility on free-breathing (FB) and respiratory-triggered (RT) sequences acquired with different numbers of signal averages (NSA). Material and methods: In this prospective study 20 subjects (M/F: 10/10; age: 25-62 years, mean: 39 years) underwent IVIM magnetic resonance imaging (MRI) on a 3.0T scanner using an 18-channel phase-arrayed coil and four different echo-planar sequences, each with 10 b values: 0, 10, 30, 50, 75, 100, 150, 200, 500, and 900 s/mm2. Images were acquired with FB and RT with NSA = 1-4 (FBNSA1-4, RTNSA1-4) and with NSA = 3-6 (FBNSA3-6, RTNSA3-6). Subsequently, for the assessment of reproducibility of IVIM-derived parameters (f, D, D*), each subject was scanned again with an identical protocol during the same session. IVIM parameters were calculated. The distribution of IVIM-parameters for each DWI sequence were given as the median value with first and third quartile. Inter-scan reproducibility for each IVIM parameter was evaluated using coefficient of variance and Bland-Altman difference. Differences between FB sequence and RT sequence were tested using non-parametric Wilcoxon signed-rank test. Results: Mean coefficient of variance (%) for f, D, and D* ranged from 60 to 64, from 58 to 84, and from 82 to 99 for FBNSA1-4 sequence; from 50 to 69, from 41 to 97, and from 80 to 82 for RTNSA1-4 sequence; from 22 to 27, 15, and from 70 to 80 for FBNSA3-6 sequence; and from 21 to 32, from 12 to, and from 50 to 80 for RTNSA3-6 sequence, respectively. Conclusions: Increasing the number of signal averages for IVIM acquisitions allows us to improve the reproducibility of IVIM-derived parameters. The sequence acquired during free-breathing with NSA = 3-6 was optimal in terms of reproducibility and acquisition time. pl
dc.subject.en diffusion-weighted imaging pl
dc.subject.en b-value pl
dc.subject.en pseudo-diffusion pl
dc.subject.en liver pl
dc.subject.en intravoxel incoherent motion pl
dc.description.volume 83 pl
dc.identifier.doi 10.5114/pjr.2018.79651 pl
dc.identifier.eissn 1899-0967 pl
dc.title.journal Polish Journal of Radiology pl
dc.language.container eng pl
dc.subtype Article pl
dc.rights.original CC-BY-NC-ND; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / OP pl


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Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 4.0 Międzynarodowa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 4.0 Międzynarodowa