New CT index to quantify arterial obstruction in pulmonary embolism: comparison with angiographic index and echocardiography.

Détails

ID Serval
serval:BIB_45C0434B0E31
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
New CT index to quantify arterial obstruction in pulmonary embolism: comparison with angiographic index and echocardiography.
Périodique
AJR: American journal of roentgenology
Auteur(s)
Qanadli S.D., El Hajjam M., Vieillard-Baron A., Joseph T., Mesurolle B., Oliva V.L., Barré O., Bruckert F., Dubourg O., Lacombe P.
ISSN
0361-803X
Statut éditorial
Publié
Date de publication
06/2001
Peer-reviewed
Oui
Volume
176
Numéro
6
Pages
1415-20
Langue
anglais
Résumé
OBJECTIVE: This study was designed to define and evaluate a specific index to quantify arterial obstruction with helical CT in acute pulmonary embolism. MATERIALS AND METHODS: Fifty-four patients (mean age, 56 years) with proven pulmonary emboli among 158 consecutive patients, who had undergone both CT and pulmonary angiography for clinically suspected pulmonary embolism, were eligible for the study. The CT obstruction index was defined as (n. d) (n, value of the proximal clot site, equal to the number of segmental branches arising distally; d, degree of obstruction scored as partial obstruction [value of 1] or total obstruction [value of 2]). We compared the CT obstruction index with pulmonary arterial obstruction on angiography (assessed by the Miller index), using linear regression, and correlated it with findings on echocardiography. Interobserver variability was determined for both CT and pulmonary angiography indexes. RESULTS: The CT obstruction index (29% +/- 17%) and the Miller index (43% +/- 25%) were well correlated (r = 0.867, p < 0.0001) with an excellent concordance between investigators for both the CT index (r = 0.944, p < 0.0001) and the Miller index (r = 0.904, p < 0.0001). A CT obstruction index greater than 40% identified more than 90% of patients with right ventricular dilatation. CONCLUSION: The degree of arterial obstruction in pulmonary embolism may be quantified by a specific CT index that appears reproducible and highly correlated to the previously described index with pulmonary angiography. Further evaluations are needed to investigate the usefulness of the CT obstruction index for stratification of patient risk and determining therapeutic options.
Mots-clé
Angiography, Echocardiography, Female, Humans, Linear Models, Male, Middle Aged, Observer Variation, Pulmonary Artery/radiography, Pulmonary Artery/ultrasonography, Pulmonary Embolism/radiography, Pulmonary Embolism/ultrasonography, Tomography, X-Ray Computed/methods
Pubmed
Web of science
Création de la notice
09/04/2008 17:12
Dernière modification de la notice
03/03/2018 16:46
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