Dual-energy CT lung ventilation/perfusion imaging for diagnosing pulmonary embolism

2013 ◽  
Vol 23 (10) ◽  
pp. 2666-2675 ◽  
Author(s):  
Long Jiang Zhang ◽  
Chang Sheng Zhou ◽  
U. Joseph Schoepf ◽  
Hui Xue Sheng ◽  
Sheng Yong Wu ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Perfusion Imaging ◽  
Lung Ventilation ◽  
Dual Energy ◽  
Dual Energy Ct

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.

DUAL-ENERGY CT WITH XENON IN PATIENTS WITH LUNG PATHOLOGY. FIRST DATA

2018 ◽  
pp. 47-51
Author(s):  
O. E. Karpov ◽  
O. Yu. Bronov ◽  
V. M. Kitaev ◽  
P. S. Vetshev ◽  
D. A. Pikhuta ◽  
...  
Keyword(s):  
Surgical Intervention ◽  
Lung Ventilation ◽  
Dual Energy ◽  
Diagnostic Methods ◽  
Dual Energy Ct ◽  
Lung Pathology ◽  
Preoperative Preparation ◽  
Before And After ◽  
Pulmonary Pathology ◽  
Postoperative Lung Function

Routine diagnostic methods have limitations in terms of predicting the ventilation function of the lungs before and after surgery. It was decided to investigate the possibilities of dual-energy CT (DECT) using xenon in assessment of lung ventilation function.Objective: to master the methods of examination of patients with pulmonary pathology, evaluate the possibility of justifying the volume of operative intervention and prediction of postoperative lung function based on the hybrid images.Materials and methods. For the study, 12 patients with different pulmonary pathologies were selected (COPD – 5, lung cancer – 4, bronchiectasis – 3). Results. It was found that the use of DECT with xenon reflects the functional state of lung tissue.Conclusions. DECT with xenon have potential for planning surgical intervention and introducing the method into modern protocols of preoperative preparation.

scholarly journals Pulmonary Embolism Detection with Dual-Energy CT: Experimental Study of Dual-Source CT in Rabbits

Radiology ◽  
2009 ◽  
Vol 252 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Long-Jiang Zhang ◽  
Yan-E Zhao ◽  
Sheng-Yong Wu ◽  
Benjamin M. Yeh ◽  
Chang-Sheng Zhou ◽  
...  
Keyword(s):  
Experimental Study ◽  
Pulmonary Embolism ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Dual Source Ct ◽  
Dual Source

Benefits of texture analysis of dual energy CT for Computer-Aided pulmonary embolism detection

2013 ◽  
Author(s):  
Antonio Foncubierta-Rodriguez ◽  
Oscar Alfonso Jimenez del Toro ◽  
Alexandra Platon ◽  
Pierre-Alexandre Poletti ◽  
Henning Muller ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Texture Analysis ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Computer Aided

Dual Energy CT lung perfusion imaging—Correlation with SPECT/CT

2012 ◽  
Vol 81 (2) ◽  
pp. 360-365 ◽  
Author(s):  
S.F. Thieme ◽  
V. Graute ◽  
K. Nikolaou ◽  
D. Maxien ◽  
M.F. Reiser ◽  
...  
Keyword(s):  
Perfusion Imaging ◽  
Dual Energy ◽  
Lung Perfusion ◽  
Dual Energy Ct ◽  
Lung Perfusion Imaging

scholarly journals Dual-energy CT perfusion imaging for differentiating WHO subtypes of thymic epithelial tumors

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Chunhai Yu ◽  
Ting Li ◽  
Ruiping Zhang ◽  
Xiaotang Yang ◽  
Zhao Yang ◽  
...  
Keyword(s):  
Perfusion Imaging ◽  
Ct Perfusion ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Thymic Epithelial Tumors ◽  
Epithelial Tumors ◽  
Ct Perfusion Imaging

Image Quality of Iodine Maps for Pulmonary Embolism: A Comparison of Subtraction CT and Dual-Energy CT

2019 ◽  
Vol 212 (6) ◽  
pp. 1253-1259 ◽  
Author(s):  
Dagmar Grob ◽  
Ewoud Smit ◽  
Luuk J. Oostveen ◽  
Miranda M. Snoeren ◽  
Mathias Prokop ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Image Quality ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Iodine Maps

Quantitative lobar pulmonary perfusion assessment on dual-energy CT pulmonary angiography: applications in pulmonary embolism

2020 ◽  
Vol 30 (5) ◽  
pp. 2535-2542 ◽  
Author(s):  
Ramandeep Singh ◽  
Ryan Zipan Nie ◽  
Fatemeh Homayounieh ◽  
Bernhard Schmidt ◽  
Thomas Flohr ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Pulmonary Angiography ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Pulmonary Perfusion ◽  
Ct Pulmonary Angiography ◽  
Perfusion Assessment

scholarly journals Value of Dual-energy Lung Perfusion Imaging Using a Dual-source CT System for the Pulmonary Embolism

2018 ◽  
Vol 13 (1) ◽  
pp. 107-111 ◽  
Author(s):  
Jinshan Zhang ◽  
Jing Cai ◽  
Shulan Liu ◽  
Xianmei Zhang
Keyword(s):  
Pulmonary Embolism ◽  
Pulmonary Artery ◽  
Perfusion Imaging ◽  
Dual Energy ◽  
Lung Perfusion ◽  
Concordance Rate ◽  
Dual Source Ct ◽  
Dual Source ◽  
Ct System ◽  
Lung Perfusion Imaging

AbstractObjectiveTo investigate the diagnostic value of dual-energy lung perfusion imaging (DEPI) using a dual-source CT system for the pulmonary embolism (PE).Methods50 patients in high acute PE prevalence were enrolled to accept the DEPI (lung perfusion image and CTA image of pulmonary artery acquired through the Dual Energy software) and emergent DSA angiography (golden diagnostic criterion).ResultsPatients using CT had significantly reduced examination duration and dosage of contrast agent than those using DSA examination, (P < 0.05). In total, 260 pulmonary arteries and 1020 pulmonary segments were examined through CTA, in which embolisms were identified in 50 lobes of lung, 108 pulmonary segments and 82 sub-segments. Reduction or lack of perfusion was identified through DEPI in 48 lobes of lung (concordance rate of 96.0%), 103 pulmonary segments (concordance rate of 95.4%) and 78 subsegments (concordance rate of 95.1%). The comparison of embolism quantity and morphological characteristics of pulmonary artery between CTA images and DEPI images showed no statistically significant difference.ConclusionBetter application value can be achieved in the diagnosis of pulmonary embolism by dual-energy lung perfusion imaging using a dual-source CT system.

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