Hepatic hemangiomas: Factors associated with T2 shine-through effect on diffusion-weighted MR sequences.

Détails

ID Serval
serval:BIB_B15B4EC826E1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Hepatic hemangiomas: Factors associated with T2 shine-through effect on diffusion-weighted MR sequences.
Périodique
European Journal of Radiology
Auteur(s)
Duran R., Ronot M., Kerbaol A., Van Beers B., Vilgrain V.
ISSN
1872-7727 (Electronic)
ISSN-L
0720-048X
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
83
Numéro
3
Pages
468-478
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
PURPOSE: To determine the frequency and factors associated with the presence of T2 shine-through effect in hepatic hemangiomas on diffusion-weighted (DW) magnetic resonance (MR) sequences.
MATERIALS AND METHODS: This retrospective study was approved by institutional review board with waiver of informed consent. One hundred forty-nine consecutive patients with 388 hepatic hemangiomas who underwent a liver MR between January 2010 and November 2011 were included. MR analysis evaluated the lesion characteristics (signal intensities and enhancement patterns (classical, rapidly filling, delayed filling)), the presence of T2 shine-through effect on DW sequences (b values of 0, 150, and 600s/mm(2)), and apparent diffusion coefficient (ADC) values. Multivariate analysis was performed to study the factors associated with the T2 shine-through effect.
RESULTS: T2 shine-through effect was observed in 204/388 (52.6%) of hepatic hemangiomas and in 100 (67.1%) patients. Mean ADC value of hemangiomas with T2 shine-through effect was significantly lower than hemangiomas without (2.0±0.48 vs 2.38±0.45, P<.0001). On multivariate analysis, high signal intensity on fat-suppressed T2-weighted fast spin-echo images, hemangiomas with classical or delayed enhancement, and the ADC of the liver were the only significant factors associated with T2 shine-through effect.
CONCLUSION: T2 shine-through effect is commonly observed in hepatic hemangiomas and is related to hemangiomas characteristics. Radiologists should be aware of this phenomenon which could lead to misdiagnosis. Its presence should not question the diagnosis of hemangiomas when typical MR findings are found.
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/03/2014 13:04
Dernière modification de la notice
20/08/2019 15:20
Données d'usage