Journal of computer assisted tomography
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J Comput Assist Tomogr · May 2008
Comparative StudyRole of functional magnetic resonance imaging in assessing metastatic leiomyosarcoma response to chemoembolization.
To assess the value of functional magnetic resonance (MR) imaging in the evaluation of early tumor response after transarterial chemoembolization (TACE) for metastatic leiomyosarcoma and compare tumor response using functional MR imaging versus traditional imaging response assessment, which is based on tumor size. ⋯ In patients with leiomyosarcoma and liver metastases who were treated with TACE, significant early changes in the treated lesions occurred on functional MR imaging. These include decrease in tumor enhancement and increase in tumor ADC value, suggesting increasing tumor necrosis and cell death. Changes in tumor size were small and inadequate to assess treatment response, suggesting limitation of the current response criteria in the early assessment of tumor response.
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J Comput Assist Tomogr · May 2008
Receiver operating characteristic analysis of the diagnostic performance of a computed tomographic examination and the Alvarado score for diagnosing acute appendicitis: emphasis on age and sex of the patients.
To compare the diagnostic performance of computed tomography (CT) and the Alvarado score and to determine whether patient age and sex influence the use of CT and the Alvarado score for diagnosing acute appendicitis. ⋯ Clinical assessment using the Alvarado score should be supplemented with CT examination for accurate diagnosis of acute appendicitis in all patients who are suspected of acute appendicitis.
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J Comput Assist Tomogr · Mar 2008
Clinical TrialAcute chest pain with normal coronary angiogram: role of contrast-enhanced multidetector computed tomography in the differential diagnosis between myocarditis and myocardial infarction.
To evaluate the accuracy of delayed-enhanced multidetector computed tomography (MSCT) for differentiating between myocarditis and myocardial infarction in patients with normal x-ray coronary angiography. ⋯ We demonstrated that delayed-enhanced MSCT allows differentiation between myocardial infarction and myocarditis with the same accuracy at acute phase compared with MRI.
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J Comput Assist Tomogr · Mar 2008
Diffusion-tensor imaging for glioma grading at 3-T magnetic resonance imaging: analysis of fractional anisotropy and mean diffusivity.
To retrospectively determine whether fractional anisotropy (FA) or mean diffusivity (MD) value at 3-T diffusion-tensor imaging is different between low- and high-grade gliomas and may be useful for glioma grading. ⋯ Fractional anisotropy values of low- and high-grade gliomas were not significantly different. However, MD values of nonenhancing low-grade gliomas were significantly higher than those of nonenhancing high-grade gliomas, which will be useful for the grading of nonenhancing infiltrative gliomas.
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J Comput Assist Tomogr · Mar 2008
Differential diagnosis of benign or malignant intraductal papillary mucinous neoplasm of the pancreas by multidetector row helical computed tomography: evaluation of predictive factors by logistic regression analysis.
The purpose of this study is to evaluate predictive factors for discriminating benign from malignant intraductal mucin-producing neoplasm (IPMN) of the pancreas on multidetector row computed tomography (MDCT). ⋯ Main duct-type IPMN is highly suggestive for malignancy. Combination factors of main ductal dilation and mural nodule, and main ductal dilation, and large cystic tumor size are thought to be predictive factors for malignant branch-type IPMN.