Journal of computer assisted tomography
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J Comput Assist Tomogr · Mar 2011
Gadolinium ethoxybenzyl diethylenetriamine pentaacetic Acid-enhanced magnetic resonance imaging findings of borderline lesions at high risk for progression to hypervascular classic hepatocellular carcinoma.
The objectives of the study were to assess the imaging features of hypovascular borderline lesions containing hypervascular foci on gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and to evaluate the ability of Gd-EOB-DTPA-enhanced MRI to diagnose high-risk borderline lesions possibly consistent with early hepatocellular carcinoma (HCC). ⋯ Although many high-risk borderline HCC lesions are hypointense on hepatobiliary-phase Gd-EOB-DTPA-enhanced MRI, some high-risk borderline lesions are isointense and transform at the same rate into hypervascular HCC.
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J Comput Assist Tomogr · Nov 2010
Streptococcus milleri group pleuropulmonary infection in children: computed tomographic findings and clinical features.
Streptococcus milleri group streptococci have recently been increasingly recognized as important pulmonary pathogens, but their imaging features have not been well documented in children. We have recently observed a number of cases of this infection among pediatric patients at our tertiary care, children's hospital. Our purpose was to investigate the computed tomographic (CT) findings and clinical features of S. milleri group pleuropulmonary infection in children. ⋯ In children with S. milleri group pleuropulmonary infection, CT often demonstrates complex pleural effusions and lung abscesses, which usually require interventional procedures for effective treatment.
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Quantification of tumor burden and assessment of changes in tumor size after chemotherapy are commonly performed to evaluate treatment response in oncology trials. Validation and adoption of different criteria have been attempted in the past to achieve uniformity in scanning techniques and measurement metrics so that comparison of different oncological trials is feasible. ⋯ RECIST 1.1 criteria have been recently published. In this article, we try to provide a comprehensive review of the tumor response evaluation guidelines that were recently updated in attempts to overcome limitations of the previous criteria as well as incorporate recent advances in imaging techniques.
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J Comput Assist Tomogr · Jul 2010
Contribution of diffusion-weighted magnetic resonance imaging in the characterization of hepatocellular carcinomas and dysplastic nodules in cirrhotic liver.
To evaluate the diagnostic value of diffusion-weighted magnetic resonance imaging (DWI) for the characterization of hepatocellular carcinoma (HCC) and dysplastic nodule (DN) in cirrhotic liver, compared with contrast material-enhanced magnetic resonance imaging (CE-MRI). ⋯ Diffusion-weighted MRI can provide additional information to differentiate HCC from DN. Combined with CE-MRI, DWI allows improved characterization of HCC versus DN in cirrhotic liver.
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J Comput Assist Tomogr · Jul 2010
Computed tomography features of extensively drug-resistant pulmonary tuberculosis in non-HIV-infected patients.
To describe the computed tomography (CT) findings of pulmonary extensively drug-resistant tuberculosis (XDR-TB) in non-HIV-infected patients and to compare them with those of non-XDR multidrug-resistant tuberculosis (MDR-TB). ⋯ Computed tomography findings of pulmonary XDR-TB are similar to those of non-XDR MDR-TB; however, XDR-TB tends to have more extensive consolidation and tree-in-bud appearance.