Quantitative evaluation of chronic pulmonary thromboemboli by multislice CT compared with pulsed Tissue Doppler Imaging and its relationship with brain natriuretic peptide

Computer-aided detection for the automated evaluation of pulmonary embolism

“…It has been found that the VOI of PE measured by Qanadli score strongly correlates to RHF [10], which was consistent with our conclusion. Patients with PE had expanded RHF as VOI increased.…”

“…PE often increased right ventricular pressure, and increased the mortality of patients with pulmonary hypertension [15]. The relationship between the right ventricular pressure and the severity of PE has been reported elsewhere [10]. Researchers have shown that quantifying the right ventricular pressure overload and the severity of PE is needed to identify signs of right heart failure (RHF) on spiral CT scans and to measure RHF severity.…”

“…However, these methods are inconvenient to perform, and different observers can obtain varying results. Recent studies have shown a strong correlation between the severity of PE as evaluated by Mastora or Qanadli scores and the RHF [10].…”

Cardiovascular parameters of computed tomographic pulmonary angiography to assess pulmonary vascular resistance in patients with chronic thromboembolic pulmonary hypertension

“…More recently, it has been found that CT scanning provides more information on different components of the disease. All morphological features of right heart adaptation and failure in PAH can be assessed by MSCT [15][16][17][18][19]. In this research, NT-proBNP was found to be correlated with Cobb angle, RVa/LVa, RVd/LVd, suggesting that these parameters could be the predictors to evaluate PVR.…”

“…Collomb et al [20] found that the CT pulmonary artery obstruction index can be used as an indicator of the hemodynamic severity of APE. Shiina et al [18] found Qanadli index was better correlated with RV systolic pressure (R = 0.401) measured by Tissue Doppler Imaging. Our results indicated that Qanadli index correlated with Mastora Index, but neither Qanadli Index nor Mastora Index did correlate with PVR.…”