Value of monoenergetic low-kV dual energy CT datasets for improved image quality of CT pulmonary angiography

2014 ◽  
Vol 83 (2) ◽  
pp. 322-328 ◽  
Author(s):  
Paul Apfaltrer ◽  
Sonja Sudarski ◽  
David Schneider ◽  
John W. Nance ◽  
Holger Haubenreisser ◽  
...  
Keyword(s):  
Image Quality ◽  
Pulmonary Angiography ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Ct Pulmonary Angiography

Single- and dual-energy CT pulmonary angiography using second- and third-generation dual-source CT systems: comparison of radiation dose and image quality

2019 ◽  
Vol 29 (9) ◽  
pp. 4603-4612 ◽  
Author(s):  
Lukas Lenga ◽  
Franziska Trapp ◽  
Moritz H. Albrecht ◽  
Julian L. Wichmann ◽  
Addison A. Johnson ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Pulmonary Angiography ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Third Generation ◽  
Dual Source Ct ◽  
Ct Pulmonary Angiography ◽  
Dual Source

scholarly journals Split-filter dual-energy CT pulmonary angiography for the diagnosis of acute pulmonary embolism: a study on image quality and radiation dose

2021 ◽  
Vol 11 (5) ◽  
pp. 1817-1827
Author(s):  
Bernhard Petritsch ◽  
Pauline Pannenbecker ◽  
Andreas M. Weng ◽  
Jan-Peter Grunz ◽  
Simon Veldhoen ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Image Quality ◽  
Radiation Dose ◽  
Acute Pulmonary Embolism ◽  
Pulmonary Angiography ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Ct Pulmonary Angiography

Dose and image quality at CT pulmonary angiography—comparison of first and second generation dual-energy CT and 64-slice CT

2011 ◽  
Vol 21 (10) ◽  
pp. 2139-2147 ◽  
Author(s):  
Ralf W. Bauer ◽  
Sebastian Kramer ◽  
Matthias Renker ◽  
Boris Schell ◽  
Maya Christina Larson ◽  
...  
Keyword(s):  
Image Quality ◽  
Second Generation ◽  
Pulmonary Angiography ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Ct Pulmonary Angiography ◽  
First And Second Generation

scholarly journals Metal artefact reduction of different alloys with dual energy computed tomography (DECT)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Anand John Vellarackal ◽  
Achim Hermann Kaim
Keyword(s):  
Stainless Steel ◽  
Image Quality ◽  
Femoral Stem ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Bony Tissue ◽  
Stem Image ◽  
Metal Artefact ◽  
Artefact Reduction

AbstractTo evaluate the influence of dual-energy CT (DECT) and Virtual monochromatic spectral (VMS) imaging on: (1) the artefact size of geometrically identical orthopaedic implants consisting of three different compositions and (2) the image quality of the surrounding bone, three similar phantoms—each featuring one femoral stem composed of either titanium, chrome-cobalt or stainless steel surrounded by five calcium pellets (200 mg hydroxyapatite/calcium carbonate) to simulate bony tissue and one reference pellet located away from the femoral stem—were built. DECT with two sequential scans (80 kVp and 140 kVp; scan-to-scan technique) was performed, and VMS images were calculated between 40 and 190 keV. The artefact sizes were measured volumetrically by semiautomatic selection of regions of interest (ROIs), considering the VMS energies and the polychromatic spectres. Moreover, density and image noise within the pellets were measured. All three phantoms exhibit artefact size reduction as energy increases from 40 to 190 keV. Titanium exhibited a stronger reduction than chrome-cobalt and stainless steel. The artefacts were dependent on the diameter of the stem. Image quality increases with higher energies on VMS with a better depiction of surrounding structures. Monoenergetic energies 70 keV and 140 keV demonstrate superior image quality to those produced by spectral energies 80 kVp and 140 kVp.

scholarly journals Dual Energy CT Pulmonary Angiography with 6g Iodine—A Propensity Score-Matched Study

PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0167214 ◽  
Author(s):  
Andreas Meier ◽  
Kai Higashigaito ◽  
Katharina Martini ◽  
Moritz Wurnig ◽  
Burkhardt Seifert ◽  
...  
Keyword(s):  
Propensity Score ◽  
Pulmonary Angiography ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Ct Pulmonary Angiography ◽  
Matched Study

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
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