Journal of computer assisted tomography
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J Comput Assist Tomogr · Mar 2013
Optimal individual inversion time in brain arterial spin labeling perfusion magnetic resonance imaging: correlation with carotid hemodynamics measured with cine phase-contrast magnetic resonance imaging.
The quantification of cerebral blood flow using pulsed arterial spin labeling could be erroneous with a nonoptimal inversion time (TI). We suggest that the optimal individual TI is dependent on the hemodynamic values of the supra-aortic vessels. ⋯ A correlation was found between optimal individual TIs and carotid hemodynamic parameters.
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J Comput Assist Tomogr · Jan 2013
Necrosis degree displayed in computed tomography images correlated with hypoxia and angiogenesis in breast cancer.
The objective of this study was to investigate the correlation between the degree of necrosis displayed in computed tomography (CT) image and the expression of hypoxic and angiogenesis biomarkers of breast cancer. ⋯ In breast cancer tissues, Glut1 and CA IX are key hypoxia biomarkers. Importantly, detection of necrosis in breast cancer tissue via CT enhanced imaging may prognosticate hypoxia and angiogenesis status and help to determine treatment plan of advanced breast cancer.
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J Comput Assist Tomogr · Jan 2013
Detection of brain metastases by 3-dimensional magnetic resonance imaging at 3 T: comparison between T1-weighted volume isotropic turbo spin echo acquisition and 3-dimensional T1-weighted fluid-attenuated inversion recovery imaging.
This study aimed to compare the diagnostic performance in the detection of brain metastases between contrast-enhanced T1-weighted volume isotropic turbo spin echo acquisition (T1-VISTA) and 3-dimensional T1-weighted fluid-attenuated inversion recovery (3D-T1-FLAIR) imaging at 3 T. ⋯ The contrast-enhanced T1-VISTA imaging is better suited than 3D-T1-FLAIR imaging, for detection of small metastases.
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J Comput Assist Tomogr · Nov 2012
Imaging studies of intraductal tubulopapillary neoplasms of the pancreas: 2-tone duct sign and cork-of-wine-bottle sign as indicators of intraductal tumor growth.
The objective of this study was to describe the imaging findings for intraductal tubulopapillary neoplasms of the pancreas. ⋯ Intraductal tubulopapillary neoplasms are rare tumors showing characteristic imaging findings such as the 2-tone duct sign and the cork-of-wine-bottle sign that represent their intraductal growth.
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J Comput Assist Tomogr · Nov 2012
Diffusion tensor magnetic resonance imaging of rat glioma models: a correlation study of MR imaging and histology.
Diffusion tensor magnetic resonance (MR) imaging (DTI) can be used to characterize the microstructures of ordered biological tissues. This study was designed to assess histological features of gliomas and surrounding brain tissues in rats using DTI. ⋯ Quantitative analysis of DTI indices provides useful information for assessing tumor microstructure and tumor cell invasion into the adjacent gray matter and white matter.