Estimation of the matrix attenuation in heterogeneous radioactive waste drums using dual-energy computed tomography

1999 ◽  
Vol 422 (1-3) ◽  
pp. 949-956 ◽  
Author(s):  
C Robert-Coutant ◽  
V Moulin ◽  
R Sauze ◽  
P Rizo ◽  
J.M Casagrande
Keyword(s):  
Computed Tomography ◽  
Radioactive Waste ◽  
Dual Energy ◽  
Dual Energy Computed Tomography ◽  
The Matrix ◽  
Waste Drums

Single-Source Dual-Energy Computed Tomography Detects Disk Injury in Patients with Vertebral Fractures

2019 ◽  
Author(s):  
Torsten Diekhoff ◽  
Michael Fuchs ◽  
Nils Engelhard ◽  
Kay-Geert Hermann ◽  
Michael Putzier ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Vertebral Fractures ◽  
Dual Energy ◽  
Single Source ◽  
Dual Energy Computed Tomography

Dual energy computed tomography angiography of a pulmonary embolized port catheter fragment

2011 ◽  
Vol 12 (1) ◽  
pp. 62-63 ◽  
Author(s):  
Thomas Henzler ◽  
Steffen Diehl ◽  
Susanne Jochum ◽  
Tim Sueselbeck ◽  
Stefan O Schoenberg ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Dual Energy ◽  
Port Catheter ◽  
Dual Energy Computed Tomography

scholarly journals Dual-Energy Computed Tomography of the Liver: Uses in Clinical Practices and Applications

Diagnostics ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 161
Author(s):  
Masakatsu Tsurusaki ◽  
Keitaro Sofue ◽  
Masatoshi Hori ◽  
Kosuke Sasaki ◽  
Kazunari Ishii ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Liver Tumors ◽  
Energy Levels ◽  
Ct Scanning ◽  
Dual Energy ◽  
Liver Imaging ◽  
X Rays ◽  
Clinical Practices ◽  
Dual Energy Computed Tomography ◽  
Noise Ratio

Dual-energy computed tomography (DECT) is an imaging technique based on data acquisition at two different energy settings. Recent advances in CT have allowed data acquisitions and simultaneous analyses of X-rays at two energy levels, and have resulted in novel developments in the field of abdominal imaging. The use of low and high X-ray tube voltages in DECT provide fused images that improve the detection of liver tumors owing to the higher contrast-to-noise ratio (CNR) of the tumor compared with the liver. The use of contrast agents in CT scanning improves image quality by enhancing the CNR and signal-to-noise ratio while reducing beam-hardening artifacts. DECT can improve detection and characterization of hepatic abnormalities, including mass lesions. The technique can also be used for the diagnosis of steatosis and iron overload. This article reviews and illustrates the different applications of DECT in liver imaging.

scholarly journals Dual-Energy Computed Tomography of the Lung in COVID-19 Patients: Mismatch of Perfusion Defects and Pulmonary Opacities

Diagnostics ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 870
Author(s):  
Saif Afat ◽  
Ahmed E. Othman ◽  
Konstantin Nikolaou ◽  
Sebastian Gassenmaier
Keyword(s):  
Computed Tomography ◽  
Dual Energy ◽  
Lung Damage ◽  
Rating System ◽  
Pulmonary Perfusion ◽  
Imaging Studies ◽  
Dual Energy Computed Tomography ◽  
Contrast Enhanced ◽  
Perfusion Defects

To evaluate contrast-enhanced dual-energy computed tomography (DECT) chest examinations regarding pulmonary perfusion patterns and pulmonary opacities in patients with confirmed COVID-19 disease. Fourteen patients with 24 DECT examinations performed between April and May 2020 were included in this retrospective study. DECT studies were assessed independently by two radiologists regarding pulmonary perfusion defects, using a Likert scale ranging from 1 to 4. Furthermore, in all imaging studies the extent of pulmonary opacities was quantified using the same rating system as for perfusion defects. The main pulmonary findings were ground glass opacities (GGO) in all 24 examinations and pulmonary consolidations in 22 examinations. The total lung scores after the addition of the scores of the single lobes showed significantly higher values of opacities compared to perfusion defects, with a median of 12 (9–18) for perfusion defects and a median of 17 (15–19) for pulmonary opacities (p = 0.002). Furthermore, mosaic perfusion patterns were found in 19 examinations in areas with and without GGO. Further studies will be necessary to investigate the pathophysiological background of GGO with maintained perfusion compared to GGO with reduced perfusion, especially regarding long-term lung damage and prognosis.

scholarly journals Dual-energy computed tomography for stone type assessment: A pilot study of DECT with five indices

2020 ◽  
Vol 21 ◽  
pp. S85
Author(s):  
V. Rudenko ◽  
N. Serova ◽  
L. Kapanadze ◽  
M. Taratkin ◽  
Z. Okhunov ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pilot Study ◽  
Dual Energy ◽  
Dual Energy Computed Tomography ◽  
Stone Type

scholarly journals Development of a Dual-Energy Computed Tomography Scoring System for Measurement of Urate Deposition in Gout

2016 ◽  
Vol 68 (6) ◽  
pp. 769-775 ◽  
Author(s):  
Sara Bayat ◽  
Opetaia Aati ◽  
Jürgen Rech ◽  
Mark Sapsford ◽  
Alexander Cavallaro ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Scoring System ◽  
Dual Energy ◽  
Dual Energy Computed Tomography

Second-Generation Dual-Energy Computed Tomography of the Abdomen

2013 ◽  
Vol 37 (4) ◽  
pp. 543-546 ◽  
Author(s):  
Carlo Nicola De Cecco ◽  
Anna Darnell ◽  
Napoleón Macías ◽  
Juan Ramón Ayuso ◽  
Sonia Rodríguez ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Second Generation ◽  
Dual Energy ◽  
Dual Energy Computed Tomography
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