Indirect MR venography: contrast medium protocols, postprocessing and combination in diagnosing pulmonary emboli with MRI

RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
A KlugeG Bachmann

Abstract

Integration of MR venography in a comprehensive MR imaging protocol in patients with suspected pulmonary embolism (PE) and evaluation of contrast media dosage, timing and postprocessing for diagnostic accuracy. Forty-eight consecutive inpatients with suspected PE or deep vein thrombosis were examined by MR venography according to one of the following protocols: protocol I: MR venography only, 0.25 mmol/kg body weight (BW) Gadopentate dimeglumine (Gd-DTPA) as single dose, bolus timing; protocol II: MR angiography of pulmonary arteries with a cumulative dosage of 0.25 mmol/kg contrast media, modification of coil setting for MR venography without further contrast media application; protocol III: as protocol II but with 0.125 mmol/kg BW, followed by MR venography. Signal-to-noise ratio, contrast-to-noise ratio, number of definable vascular segments and image quality were evaluated. The results were compared to conventional bilateral venography. All MR venography examinations were of diagnostic quality and the examination time was below 10 min. MR venography could be performed in all 48 patients compared to 43 of 48 patients for conventional venography. Significantly more superficial and deep veins of the leg could be visualized by ...Continue Reading

Citations

May 23, 2006·AJR. American Journal of Roentgenology·Alexander KlugeGeorg Bachmann
Jun 24, 2006·AJR. American Journal of Roentgenology·Alexander KlugeGeorg Bachmann
Mar 12, 2005·Magnetic Resonance Imaging Clinics of North America·Florian M VogtMathias Goyen

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