Dual-Energy CT for Assessment of the Severity of Acute Pulmonary Embolism: Pulmonary Perfusion Defect Score Compared With CT Angiographic Obstruction Score and Right Ventricular/Left Ventricular Diameter Ratio

2010 ◽  
Vol 194 (3) ◽  
pp. 604-610 ◽  
Author(s):  
Eun Jin Chae ◽  
Joon Beom Seo ◽  
Yu Mi Jang ◽  
Bernhard Krauss ◽  
Choong Wook Lee ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Perfusion Defect ◽  
Acute Pulmonary Embolism ◽  
Dual Energy ◽  
Left Ventricular ◽  
Diameter Ratio ◽  
Dual Energy Ct ◽  
Pulmonary Perfusion ◽  
Left Ventricular Diameter ◽  
Defect Score

scholarly journals Acute Pulmonary Embolism Severity Assessment Evaluated with Dual Energy CT Perfusion Compared to Conventional CT Angiographic Measurements

Diagnostics ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 495
Author(s):  
Samir Jawad ◽  
Peter Sommer Ulriksen ◽  
Anna Kalhauge ◽  
Kristoffer Lindskov Hansen
Keyword(s):  
Pulmonary Embolism ◽  
Perfusion Imaging ◽  
Perfusion Defect ◽  
Acute Pulmonary Embolism ◽  
Dual Energy ◽  
Diameter Ratio ◽  
Dual Energy Ct ◽  
Weak Correlation ◽  
Acute Pe ◽  
Defect Volume

The purpose of the study was to investigate whether Dual Energy CT (DECT) can be used as a diagnostic tool to assess the severity of acute pulmonary embolism (PE) by correlating parenchymal perfusion defect volume, obstruction score and right ventricular-to-left ventricular (RV/LV) diameter ratio using CT angiography (CTA) and DECT perfusion imaging. A total of 43 patients who underwent CTA and DECT perfusion imaging with clinical suspicion of acute PE were retrospectively included in the study. In total, 25 of these patients had acute PE findings on CTA. DECT assessed perfusion defect volume (PDvol) were automatically and semiautomatically quantified. Overall, two CTA methods for risk assessment in patients with acute PE were assessed: the RV/LV diameter ratio and the Modified Miller obstruction score. Automatic PDvol had a weak correlation (r = 0.47, p = 0.02) and semiautomatic PDvol (r = 0.68, p < 0.001) had a moderate correlation to obstruction score in patients with confirmed acute PE, while only semiautomatic PDvol (r = 0.43, p = 0.03) had a weak correlation with the RV/LV diameter ratio. Our data indicate that PDvol assessed by DECT software technique may be a helpful tool to assess the severity of acute PE when compared to obstruction score and RV/LV diameter ratio.

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