Navigation überspringen
Universitätsbibliothek Heidelberg
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Schmitt, Niclas [VerfasserIn]   i
 Floca, Ralf [VerfasserIn]   i
 Paech, Daniel [VerfasserIn]   i
 El-Shafie, Rami [VerfasserIn]   i
 Neuberger, Ulf [VerfasserIn]   i
 Bendszus, Martin [VerfasserIn]   i
 Möhlenbruch, Markus Alfred [VerfasserIn]   i
 Vollherbst, Dominik [VerfasserIn]   i
Titel:Imaging artifacts of nonadhesive liquid embolic agents in conventional and cone-beam CT in a novel in vitro AVM model
Verf.angabe:Niclas Schmitt, Ralf O. Floca, Daniel Paech, Rami A. El Shafie, Ulf Neuberger, Martin Bendszus, Markus A. Möhlenbruch, Dominik F. Vollherbst
E-Jahr:2021
Jahr:14 April 2021
Umfang:8 S.
Fussnoten:Gesehen am 04.09.2023
Titel Quelle:Enthalten in: Clinical neuroradiology
Ort Quelle:München : Urban & Vogel, 2006
Jahr Quelle:2021
Band/Heft Quelle:31(2021), 4, Seite 1141-1148
ISSN Quelle:1869-1447
 1615-6706
Abstract:Background A major drawback of liquid embolic agents (LEAs) is the generation of imaging artifacts (IA), which may represent a crucial obstacle for the detection of periprocedural hemorrhage or subsequent radiosurgery of cerebral arteriovenous malformations (AVMs). This study aimed to compare the IAs of Onyx, Squid and PHIL in a novel three-dimensional in vitro AVM model in conventional computed tomography (CT) and cone-beam CT (CBCT). - Methods Tubes with different diameters were configured in a container resembling an AVM with an artificial nidus at its center. Subsequently, the AVM models were filled with Onyx 18, Squid 18, PHIL 25% or saline and inserted into an imaging phantom (n = 10/LEA). Afterwards CT and CBCT scans were acquired. The degree of IAs was graded quantitatively (Hounsfield units in a defined region of interest) and qualitatively (feasibility of defining the nidus)—Onyx vs. Squid vs. PHIL vs. saline, respectively. - Results Quantitative density evaluation demonstrated more artifacts for Onyx compared to Squid and PHIL, e.g. 48.15 ± 14.32 HU for Onyx vs. 7.56 ± 1.34 HU for PHIL in CT (p < 0.001) and 41.88 ± 7.22 density units (DU) for Squid vs. 35.22 ± 5.84 DU for PHIL in CBCT (p = 0.044). Qualitative analysis showed less artifacts for PHIL compared to Onyx and Squid in both imaging modalities while there was no difference between Onyx and Squid regarding the definition of the nidus (p > 0.999). - Conclusion In this novel three-dimensional in vitro AVM model, IAs were higher for the EVOH/tantalum-based LEAs Onyx and Squid compared to iodine-based PHIL. Onyx induced the highest degree of IAs with only minor differences to Squid.
DOI:doi:10.1007/s00062-021-01013-5
URL:kostenfrei: Volltext: https://doi.org/10.1007/s00062-021-01013-5
 kostenfrei: Volltext: https://link.springer.com/10.1007/s00062-021-01013-5
 DOI: https://doi.org/10.1007/s00062-021-01013-5
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:185871396X
Verknüpfungen:→ Zeitschrift
 
 
Lokale URL UB: Zum Volltext

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/69118202   QR-Code
zum Seitenanfang