Investigative radiology
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Investigative radiology · Apr 2000
Lobar distribution of emphysema in computed tomographic densitometric analysis.
The aims of this study were to determine the extent of emphysema in individual lobes and to investigate whether the lobar distribution of emphysema influences pulmonary function. ⋯ CT densitometry showed a distinct lobar distribution of emphysema. Pulmonary function is significantly different between predominantly upper- and lower-lobe emphysema groups.
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Investigative radiology · Apr 2000
Assessment of the vascularization of neuroendocrine tumors by stimulated acoustic emission of SH U 508A ultrasound contrast agent and color or power Doppler sonography.
To assess the vascularization of neuroendocrine tumors by stimulated acoustic emission (SAE) of SH U 508A during the blood pool phase in comparison with contrast-enhanced Doppler sonography. ⋯ Blood pool SAE failed to determine subtle tumor perfusion correctly. The rating score for contrast-enhanced Doppler sonography characterized tumor perfusion with high accuracy. The use of a contrast agent significantly improved perfusion characterization.