title: Correlation of CT angiographic pulmonary artery obstruction scores with right ventricular dysfunction and clinical outcome in patients with acute pulmonary embolism.
abstract: OBJECTIVE
  To correlate CTA pulmonary artery obstruction scores (OS) with right ventricular dysfunction (RVD) and clinical outcome in patients with acute pulmonary embolism (PE).
  
  
  METHODS
  In a prospective study of 50 patients (66 ± 12.9 years) with PE pulmonary artery OS (Qanadli, Mastora, and Mastora central) were assessed by two radiologists. To assess RVD all patients underwent echocardiography within 24h. Furthermore, RVD on CT was assessed by calculating the right ventricular/left ventricular (RV/LV) diameter ratios on transverse (RV/LVtrans) and four-chamber views (RV/LV4ch) as well as the RV/LV volume ratio (RV/LVvol). OS were correlated with RVD and the occurrence of adverse clinical outcomes (defined as death, need for intensive care treatment, or cardiac insufficiency ≥ NYHA III).
  
  
  RESULTS
  Mean Mastora, Qanadli, and Mastora central OS were 26.4 ± 17.7, 12.6 ± 9.9 and 7.5 ± 9, respectively. Echocardiography demonstrated moderate and severe RVD in 10 and 5 patients, respectively. Patients with moderate and severe RVD showed significantly higher Mastora central scores than patients without RVD (14 ± 10.8 vs. 5.9 ± 7.8 [p=0.05]; 17.6 ± 13.2 vs. 5.9 ± 7.8 [p=0.038]). A relevant correlation (i.e. r ≥ 0.6) between OS and CT parameters for RVD were only found for the Mastora score and the Mastora central score (RV/LV4ch: r=0.61 and 0.68, RV/LVvol: r=0.61 and 0.6). 18 patients experienced an adverse clinical outcome. None of the OS differed significantly between patients with and without adverse clinical outcome.
  
  
  CONCLUSIONS
  Pulmonary artery obstruction scores can differentiate between patients with and without RVD. However, in this study, obstruction scores were not correlated to adverse clinical outcome.
authors.affiliation: Institute of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, D-68167 Mannheim, Germany. paul.apfaltrer@medma.uni-heidelberg.de
authors.forename: P
authors.initials: P
authors.lastname: Apfaltrer
authors.forename: T
authors.initials: T
authors.lastname: Henzler
authors.forename: M
authors.initials: M
authors.lastname: Meyer
authors.forename: S
authors.initials: S
authors.lastname: Roeger
authors.forename: D
authors.initials: D
authors.lastname: Haghi
authors.forename: J
authors.initials: J
authors.lastname: Gruettner
authors.forename: T
authors.initials: T
authors.lastname: Süselbeck
authors.forename: R B
authors.initials: RB
authors.lastname: Wilson
authors.forename: U J
authors.initials: UJ
authors.lastname: Schoepf
authors.forename: S O
authors.initials: SO
authors.lastname: Schoenberg
authors.forename: C
authors.initials: C
authors.lastname: Fink
mesh_terms: D000208:Acute Disease; D000368:Aged; D000792:Angiography / Q000379:methods* / Q000706:statistics & numerical data; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D008297:Male; D011379:Prognosis; D011651:Pulmonary Artery / Q000000981:diagnostic imaging*; D011655:Pulmonary Embolism / Q000150:complications* / Q000000981:diagnostic imaging* / Q000401:mortality; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D016019:Survival Analysis; D015996:Survival Rate; D014057:Tomography, X-Ray Computed / Q000379:methods* / Q000706:statistics & numerical data; D018497:Ventricular Dysfunction, Right / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000401:mortality