Contrast-enhanced dual-energy digital subtraction mammography: optimization of the beam energy

2005 ◽  
Author(s):  
Alexander L. C. Kwan ◽  
John M. Boone ◽  
Huong Le-Petross ◽  
Karen K. Lindfors ◽  
J. A. Seibert ◽  
...  
Keyword(s):  
Beam Energy ◽  
Dual Energy ◽  
Digital Subtraction ◽  
Contrast Enhanced

Dual-Energy Contrast-enhanced Digital Subtraction Mammography: Feasibility

Radiology ◽  
2003 ◽  
Vol 229 (1) ◽  
pp. 261-268 ◽  
Author(s):  
John M. Lewin ◽  
Pamela K. Isaacs ◽  
Virginia Vance ◽  
Fred J. Larke
Keyword(s):  
Dual Energy ◽  
Digital Subtraction ◽  
Contrast Enhanced

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 The quantitative assessment of regional systolic function during graded ischemia using phase-matched dual-energy digital subtraction ventriculography

1991 ◽  
Vol 17 (2) ◽  
pp. A104
Author(s):  
Cynthia H. McCollough ◽  
William P. Miller ◽  
Michael S. Van Lysel ◽  
John D. Folts ◽  
Walter W. Peppler
Keyword(s):  
Quantitative Assessment ◽  
Systolic Function ◽  
Dual Energy ◽  
Digital Subtraction

scholarly journals Optimization of a dual-energy contrast-enhanced technique for a photon-counting digital breast tomosynthesis system: I. A theoretical model

2010 ◽  
Vol 37 (11) ◽  
pp. 5896-5907 ◽  
Author(s):  
Ann-Katherine Carton ◽  
Christer Ullberg ◽  
Karin Lindman ◽  
Raymond Acciavatti ◽  
Tom Francke ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Photon Counting ◽  
Digital Breast Tomosynthesis ◽  
Dual Energy ◽  
Breast Tomosynthesis ◽  
Contrast Enhanced

scholarly journals New technologies in breast cancer detection – contrast enhanced dual-energy spectral mammography

2019 ◽  
pp. 49-61
Author(s):  
A. V. Chernaya ◽  
S. N. Novikov ◽  
P. V. Krivorotko ◽  
R. Kh. Ulyanova ◽  
V. V. Danilov
Keyword(s):  
Breast Cancer ◽  
Digital Mammography ◽  
Predictive Value ◽  
New Technologies ◽  
Malignant Tumors ◽  
Dual Energy ◽  
Post Contrast ◽  
Morphological Studies ◽  
Contrast Enhanced ◽  
Sensitivity Specificity

Purpose: to study the possibilities of contrast enhanced dual-energy spectral mammography (CESM) in the diagnostics of malignant tumors in the breast.Material and methods. Forty-seven patients with suspicious for breast cancer (BC) lesions underwent CESM. Digital mammography (MMG) and post-contrast images were correlated with the results of path morphological studies after surgery or puncture biopsy was performed.Results. Sensitivity, specificity and overall accuracy in the diagnostics of breast cancer were 83.3%, 85.7%, 85.1% for digital mammography and 91.6%, 91.4%, 91.4% for CESM, respectively. The positive predictive value was 66.6% for digital MMG and 78.5% for CESM. The negative predictive value (NPV) was 96.9% for the CESM and exceeded NPV of the digital MMG, which was 93.7%.Conclusion. Thus, these findings suggest that CESM is an effective method for the diagnostics of malignant tumors in the breast.

Characterization of Small Incidental Indeterminate Hypoattenuating Hepatic Lesions: Added Value of Single-Phase Contrast-Enhanced Dual-Energy CT Material Attenuation Analysis

2018 ◽  
Vol 211 (3) ◽  
pp. 571-579 ◽  
Author(s):  
Bhavik N. Patel ◽  
Michael Rosenberg ◽  
Federica Vernuccio ◽  
Juan Carlos Ramirez-Giraldo ◽  
Rendon Nelson ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Single Phase ◽  
Dual Energy ◽  
Added Value ◽  
Dual Energy Ct ◽  
Contrast Enhanced ◽  
Hepatic Lesions
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