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  • Title: [MR venography of the deep leg veins: signal enhancement by volume infusion].
    Author: König CW, Kaiser WA.
    Journal: Rofo; 1997 Mar; 166(3):206-9. PubMed ID: 9156590.
    Abstract:
    PURPOSE: To enhance flow signals in the deep veins of the lower extremity by means of a drip infusion. METHODS: Saline solution and diluted contrast media were consecutively administered in 8 healthy volunteers by drip infusion (3 ml/min) via the cubital vein. Imaging of the deep veins in both legs was performed using a gradient echo sequence with flow compensation. Changes of the intravascular signal-to-noise-ratio (SNR) were correlated with the duration of the drip infusion. RESULTS: Improved SNR were detected in each level examined in both thigh and calf. SNR increases up to 157% were opposed to decreases of less than 16%. The average rise of SNR was up to 55% in the calf veins. CONCLUSION: Saline drip infusion is a simple and valuable method for enhancement of venous flow signals and should be administered routinely in time-of-flight venographies.
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