scholarly journals Dose reduction for CT coronary calcium scoring with a calcium-aware image reconstruction technique: a phantom study

2020 ◽  
Vol 30 (6) ◽  
pp. 3346-3355 ◽  
Author(s):  
Ronald Booij ◽  
Niels R. van der Werf ◽  
Ricardo P. J. Budde ◽  
Daniel Bos ◽  
Marcel van Straten
Keyword(s):  
Image Reconstruction ◽  
Dose Reduction ◽  
Phantom Study ◽  
Coronary Calcium ◽  
Reconstruction Technique ◽  
Calcium Scoring ◽  
Coronary Calcium Scoring ◽  
Image Reconstruction Technique

The impact of CT radiation dose reduction and iterative reconstruction algorithms from four different vendors on coronary calcium scoring

2014 ◽  
Vol 24 (9) ◽  
pp. 2201-2212 ◽  
Author(s):  
Martin J. Willemink ◽  
Richard A. P. Takx ◽  
Pim A. de Jong ◽  
Ricardo P. J. Budde ◽  
Ronald L. A. W. Bleys ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Dose Reduction ◽  
Iterative Reconstruction ◽  
Radiation Dose Reduction ◽  
Coronary Calcium ◽  
Calcium Scoring ◽  
Reconstruction Algorithms ◽  
Coronary Calcium Scoring ◽  
Ct Radiation ◽  
The Impact

scholarly journals Technical Note: kV Independent Coronary Calcium Scoring: A Phantom Evaluation of Score Accuracy and Potential Radiation Dose Reduction

2020 ◽  
Author(s):  
Shengzhen Tao ◽  
Emily Sheedy ◽  
Michael Bruesewitz ◽  
Nikkole Weber ◽  
Kyle Williams ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Dose Reduction ◽  
Technical Note ◽  
Radiation Dose Reduction ◽  
Coronary Calcium ◽  
Calcium Scoring ◽  
Coronary Calcium Scoring

Finding the optimal dose reduction and iterative reconstruction level for coronary calcium scoring

2016 ◽  
Vol 10 (1) ◽  
pp. 69-75 ◽  
Author(s):  
Martin J. Willemink ◽  
Annemarie M. den Harder ◽  
Wouter Foppen ◽  
Arnold M.R. Schilham ◽  
Rienk Rienks ◽  
...  
Keyword(s):  
Dose Reduction ◽  
Iterative Reconstruction ◽  
Optimal Dose ◽  
Coronary Calcium ◽  
Calcium Scoring ◽  
Coronary Calcium Scoring

Dose reduction for coronary calcium scoring with hybrid and model-based iterative reconstruction: an ex vivo study

2014 ◽  
Vol 30 (6) ◽  
pp. 1125-1133 ◽  
Author(s):  
Annemarie M. den Harder ◽  
Martin J. Willemink ◽  
Ronald L. A. W. Bleys ◽  
Pim A. de Jong ◽  
Ricardo P. J. Budde ◽  
...  
Keyword(s):  
Dose Reduction ◽  
Iterative Reconstruction ◽  
Ex Vivo ◽  
Coronary Calcium ◽  
Calcium Scoring ◽  
Coronary Calcium Scoring ◽  
Model Based ◽  
Ex Vivo Study

PEMBELAJARAN SIMULASI PENCITRAAN CT DENGAN MENGGUNAKAN PRINSIP REKONSTRUKSI CITRA DALAM SOFTWARE MATLAB

2015 ◽  
Vol 8 (3) ◽  
pp. 161
Author(s):  
Samuel Gideon
Keyword(s):  
Image Reconstruction ◽  
Ct Imaging ◽  
The Body ◽  
Reconstruction Technique ◽  
Imaging Features ◽  
Back Projection ◽  
Cross Sectional ◽  
Low Contrast ◽  
Image Reconstruction Technique ◽  
Imaging Algorithms

This research was conducted as a learning alternatives for study of CT (computed tomograpghy) imaging using image reconstruction technique which are inversion matrix, back projection and filtered back projection. CT imaging can produce images of objects that do not overlap. Objects more easily distinguishable although given the relatively low contrast. The image is generated on CT imaging is the result of reconstruction of the original object. Matlab allows us to create and write imaging algorithms easily, easy to undersand and gives applied and exciting other imaging features. In this study, an example cross-sectional image recon-struction performed on the body of prostate tumors using. With these methods, medical prac-titioner (such as oncology clinician, radiographer and medical physicist) allows to simulate the reconstruction of CT images which almost resembles the actual CT visualization techniques.Keywords : computed tomography (CT), image reconstruction, Matlab

Value of Coronary Calcium Scoring in Symptomatic and Asymptomatic Coronary Artery Disease Patients

2020 ◽  
Vol 16 ◽  
Author(s):  
Hala T. Salem ◽  
Eman A.S. Sabek
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Sensitivity And Specificity ◽  
High Sensitivity ◽  
Coronary Calcium ◽  
Risk Estimate ◽  
Calcium Scoring ◽  
Coronary Calcium Scoring ◽  
Framingham Risk ◽  
Artery Disease

Aim and Objective: To estimate the relationship between Coronary Calcium Scoring (CCS)and presence of different degrees of obstructive coronary artery disease (CAD) to avoid unnecessary examinations and hence unnecessary radiation exposure and contrast injection. Background: Coronary Calcium Scoring (CCS) is a test uses x-ray equipment to produce pictures of the coronary arteries to determine the degree of its narrowing by the build-up of calcified plaques. Despite the lack of definitive data linking ionizing radiation with cancer, the American Heart Association supports widely that practitioners of Computed tomography Coronary Angiography (CTCA) should keep “patient radiation doses as low as reasonably achievable but consistent with obtaining the desired medical information”. Methods: Data obtained from 275 CTCA examinations were reviewed. Radiation effective doses were estimated for both CCS and CTCA, measures to keep it as low as possible were presented, CCS and Framingham risk estimate were compared to the final results of CTCA to detect sensitivity and specificity of each one in detecting obstructive lesions. Results: CCS is a strong discriminator for obstructive CAD and can with high sensitivity and specificity and correlates well with the degree of obstruction even more than Framingham risk estimate which has high sensitivity and low specificity. Conclusion: CCS helps reducing the effective radiation dose if properly evaluated to skip unnecessary CTCA if obstructive lesions was unlikely, and as a test does not use contrast material, harmful effect on the kidney will be avoided as most of coronary atherosclerotic patients have renal problems.

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