Detection of suspected placental invasion by MRI: Do the results depend on observer' experience?

Détails

ID Serval
serval:BIB_3CD1993EE3FE
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Detection of suspected placental invasion by MRI: Do the results depend on observer' experience?
Périodique
European Journal of Radiology
Auteur(s)
Alamo L., Anaye A., Rey J., Denys A., Bongartz G., Terraz S., Artemisia S., Meuli R., Schmidt S.
ISSN
1872-7727 (Electronic)
ISSN-L
0720-048X
Statut éditorial
Publié
Date de publication
02/2013
Peer-reviewed
Oui
Volume
82
Numéro
2
Pages
e51-e57
Langue
anglais
Notes
Publication types: Journal Article
Résumé
PURPOSE: To evaluate the diagnostic value of previously described MR features used for detecting suspected placental invasion according to observers' experience.
MATERIALS AND METHODS: Our population included 25 pregnant women (mean age 35.16) investigated by prenatal MRI (1.5T, T1- and T2-weighted MR-sequences without i.v. contrast), among them 12 with histopathologically proven placental invasion and 13 women (52%) without placental invasion used as control group. Two senior and two junior radiologists blindly and independently reviewed MR-examinations in view of 6 previously defined MR-features indicating presence and degree of placental invasion (placenta increta, accreta or percreta). For each reader the sensibility, specificity, and receiver operating curve (ROC) were calculated. Interobserver agreements between senior and junior readers were determined. Stepwise logistic regression was performed including the 6 MR-features predictive of placental invasion.
RESULTS: Demographics between both groups were statistically equivalent. Overall sensitivity and specificity for placental invasion was 90.9% and 75.0% for seniors and 81.8% and 61.8% for juniors, respectively. The best single MR-feature indicating placental invasion was T2-hypointense placental bands (r(2)=0.28), followed by focally interrupted myometrial border, infiltration of pelvic organs and tenting of the bladder (r(2)=0.36). Interobserver agreement for detecting placental invasion was 0.64 for seniors and 0.41 for juniors, thus substantial and moderate, respectively. Seniors detected placental invasion and depth of infiltration with significantly higher diagnostic certitude than juniors (p=0.0002 and p=0.0282, respectively).
CONCLUSION: MRI can be a reliable and reproducible tool for the detection of suspected placental invasion, but the diagnostic value significantly depends on observers' experience.
Pubmed
Web of science
Création de la notice
17/01/2013 17:01
Dernière modification de la notice
20/08/2019 13:33
Données d'usage