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Construction of Realistic Liver Phantoms from Patient Images using 3D Printer and Its Application in CTImage Quality Assessment

posted by | Jan 2, 2018

The purpose of this study is to use 3D printing techniques to construct a realistic liver phantom with heterogeneous background and anatomic structures from patient CT images, and to use the phantom to assess image quality with filtered backprojection and iterative reconstruction algorithms. Read more

Correlation between Dual-Energy and Perfusion CT in Patients with Hepatocellular Carcinoma.

posted by Hatem Alkadhi, M.D., M.P.H., E.B.C.R. | Feb 6, 2017
Hatem Alkadhi, M.D., M.P.H., E.B.C.R.

Purpose: To develop a dual-energy contrast media-enhanced computed tomographic (CT) protocol by using time-attenuation curves from previously acquired perfusion CT data and to evaluate prospectively the relationship between iodine enhancement metrics at dual-energy CT and perfusion CT parameters in patients with hepatocellular carcinoma (HCC). Read more

Noise Texture Deviation: A Measure for Quantifying Artifacts in CT Images With Iterative Reconstructions.

posted by Hatem Alkadhi, M.D., M.P.H., E.B.C.R. | Jan 22, 2017
Hatem Alkadhi, M.D., M.P.H., E.B.C.R.

Objectives: The aims of this study were to introduce the measure noise texture deviation as quantitative parameter for evaluating iterative reconstruction (IR)-specific artifacts in computed tomography (CT) images and to test whether IR-specific artifacts, quantified through this measure, are reduced in advanced modeled IR (ADMIRE) as compared with sinogram-affirmed IR … Read more

Optimization of window settings for virtual monoenergetic imaging in dual-energy CT of the liver: A multi-reader evaluation of standard monoenergetic and advanced imaged-based monoenergetic datasets.

posted by Carlo Nicola De Cecco, M.D., PhD | Jun 7, 2016
Carlo Nicola De Cecco, M.D., PhD

Objectives: To evaluate optimal window settings for display of virtual monoenergetic reconstructions in third-generation dual-source, dual-energy computed tomography (DECT) of the liver. Read more

Virtual unenhanced images of the abdomen with second-generation dual-source dual-energy CT: image quality and liver lesion detection

posted by Carlo Nicola De Cecco, M.D., PhD | Oct 27, 2014
Carlo Nicola De Cecco, M.D., PhD

Second-generation abdominal VU data sets, despite a mostly excellent image quality, still cannot replace CU images in clinical practice because of limitations in material subtraction. Read more

Objective and Subjective Image Quality of Liver Parenchyma and Hepatic Metastases with Virtual Monoenergetic Dual-source Dual-energy CT Reconstructions: An Analysis in Patients with Gastrointestinal Stromal Tumor

posted by Thomas Henzler, MD | Jun 6, 2014
Thomas Henzler, MD

To compare in dual-energy CT conventionally reconstructed polyenergetic images (PEI) at 120 kVp to virtual monoenergetic images at different keV levels for evaluation of liver and gastrointestinal stromal tumor (GIST) hepatic metastases with regard to objective and subjective image quality. Read more

Abdominal dual-source dual-energy CT: Uses in clinical practice

posted by Marilyn J. Siegel, M.D. | Feb 28, 2014
Marilyn J. Siegel, M.D.

In this review article, the authors evaluate techniques, including the use of a single contrast-enhanced acquisition to yield unenhanced and contrast-enhanced CT data. Read more

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