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Huf, Veronika I. ; Fellner, Claudia ; Wohlgemuth, Walter A. ; Stroszczynski, Christian ; Schmidt, Michaela ; Forman, Christoph ; Wetzl, Jens ; Uller, Wibke

Fast TWIST with iterative reconstruction improves diagnostic accuracy of AVM of the hand

Huf, Veronika I., Fellner, Claudia, Wohlgemuth, Walter A., Stroszczynski, Christian , Schmidt, Michaela, Forman, Christoph, Wetzl, Jens und Uller, Wibke (2020) Fast TWIST with iterative reconstruction improves diagnostic accuracy of AVM of the hand. Scientific Reports 10, S. 16355.

Veröffentlichungsdatum dieses Volltextes: 23 Feb 2021 09:08
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.45047


Zusammenfassung

Very high temporal and spatial resolution is mandatory for the diagnosis of arteriovenous malformations (AVM) of the hand. Until now, magnetic resonance imaging (MRI) has not fulfilled both requirements simultaneously. This study presents how the combination of a very fast TWIST MRI (time-resolved angiography with interleaved stochastic trajectories) sequence and iterative reconstructions ...

Very high temporal and spatial resolution is mandatory for the diagnosis of arteriovenous malformations (AVM) of the hand. Until now, magnetic resonance imaging (MRI) has not fulfilled both requirements simultaneously. This study presents how the combination of a very fast TWIST MRI (time-resolved angiography with interleaved stochastic trajectories) sequence and iterative reconstructions optimizes temporal as well as spatial resolution. 11 patients were examined at a 3-T MRI scanner with two different TWIST protocols: the standard and the study protocol, acquiring a data set every 5.57 s and 1.44 s respectively. The study data was retrospectively iteratively reconstructed with different regularization factors (0.001, 0.002, 0.004, 0.008). Results were compared using the sign-test. P-values<0.05 were regarded statistically significant. With a low amount of contrast medium, the temporal resolution of the study protocol enabled the differentiation of arteries from veins in all patients whereas the signal-to-noise ratio (SNR) deteriorated. Depending on the regularization factors, SNR, delineation of arterial feeders and non-involved hand and interdigital arteries, as well as artefact levels varied. Overall, iterative reconstruction with regularization factor 0.004 achieved the best results, consequently showing the ability of MRI as a reliable diagnostic method in AVMs of the hand.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftScientific Reports
Verlag:Nature
Ort der Veröffentlichung:BERLIN
Band:10
Seitenbereich:S. 16355
Datum1 Oktober 2020
InstitutionenMedizin > Lehrstuhl für Röntgendiagnostik
Identifikationsnummer
WertTyp
10.1038/s41598-020-73331-6DOI
Stichwörter / KeywordsMAGNETIC-RESONANCE ANGIOGRAPHY; VASCULAR MALFORMATIONS; CE-MRA; CLASSIFICATION; MANAGEMENT;
Dewey-Dezimal-Klassifikation600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-450471
Dokumenten-ID45047

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