European journal of radiology
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Comparative Study
Comparison of three different injection methods for arterial phase of Gd-EOB-DTPA enhanced MR imaging of the liver.
To compare three different injection methods for optimizing hepatic arterial phase of gadolinium ethoxybenzyl diethylenetriaminepentaacetic acid (Gd-EOB-DTPA) enhanced MR imaging. ⋯ For the optimal arterial phase imaging, injection rate of 1 mL/s with undiluted Gd-EOB-DTPA is convenient and preferable, compared with other two methods, based on our qualitative analysis.
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Case Reports
Transarterial Onyx packing of the transverse-sigmoid sinus for dural arteriovenous fistulas.
To report transarterial Onyx packing of the transverse-sigmoid sinus for dural arteriovenous fistulae (DAVFs). ⋯ Transarterial Onyx packing of transverse-sigmoid sinus for DAVFs via the meningeal arterial system is a safe therapeutic alternative in selected cases.
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Comparative Study
Tracheal morphology and collapse in COPD: correlation with CT indices and pulmonary function test.
To assess the tracheal morphologic changes using CT in COPD (chronic obstructive lung disease) patients and to assess correlation between them and PFT (pulmonary function test) and CT parameters. ⋯ Among the tracheal morphologic changes, the most significant change in COPD patients compared with that in the control group, was the TI. In COPD patients, the tracheal morphologic change showed clinically significant correlation with severity of emphysema and CT indices.
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The purpose of this study was to assess differences in enhancement effects of liver parenchyma between normal and cirrhotic livers on contrast-enhanced MR imaging (CE-MRI) obtained with Gd-EOB-DTPA. ⋯ Hepatic parenchymal enhancement on CE-MR images obtained using Gd-EOB-DTPA is affected by the severity of cirrhosis.
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The purpose of this study was to retrospectively evaluate the feasibility of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to differentiate between ductal carcinoma in situ (DCIS) and mastopathy by analyzing their time-intensity curves (TICs) using the two-compartment pharmacokinetic model with an assumption of instantaneous injection of contrast medium (TCPM). After the pre-contrast MRI was performed using a 1.5 T MRI system, DCE-MRI was performed four times after the intravenous administration of contrast medium. We set the volumes of interest (VOIs) on the tumor and normal mammary gland, and obtained the TICs in these VOIs. ⋯ There were significant differences in Slopeini (P=0.009), PeakE (P=0.019), rSlopeini (P=0.010), and rTTP (P=0.005) between DCIS and mastopathy. The areas under the receiver operating characteristic curve for Slopeini, PeakE, rSlopeini, and rTTP were 0.67±0.06 (P=0.009), 0.65±0.06 (P=0.019), 0.67±0.06 (P=0.01), and 0.68±0.06 (P=0.005), respectively. In conclusion, our results suggest that analysis of TICs obtained by DCE-MRI using TCPM appears to be useful for differentiating between DCIS and mastopathy.