Low dose pedal magnetic resonance angiography at 3 tesla with time-resolved imaging of contrast kinetics: a feasibility study

Investigative Radiology
Suvranu GanguliNeil M Rofsky

Abstract

To assess the feasibility of low-dose time-resolved imaging of contrast kinetics (TRICKS) magnetic resonance (MR) angiography of the pedal vasculature at 3.0 Tesla (T) using a head coil. Eleven healthy volunteers were imaged using TRICKS MR angiography at 3.0 T with both feet positioned in a head coil. A dose of 7 mL was used for each of 3 acquisitions: images were obtained of each foot in the sagittal plane, and then both feet were imaged simultaneously in the transverse plane. The following parameters were used for acquisition: (TR/TE 4.7 milliseconds/ 1.3 milliseconds, field of view = 28 cm, Flip angle = 30 degrees, 384 x 256 matrix, section thickness = 1.6 mm, Bandwidth = 19.23). The dorsalis pedis, plantar arch, distal posterior tibial, lateral tarsal, and medial plantar arteries were graded for visualization, artifact, and overall image quality on a 4-point scale (1 = worst; 4 = best). Superior visualization trended towards separate sagittal acquisitions when compared with that of bilateral transverse acquisitions for most of the individual vessels of the foot. Overall, separate sagittal acquisitions (average score = 2.9) were superior to bilateral transverse acquisitions (average score = 2.6). The average image quality s...Continue Reading

References

Sep 1, 1996·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·F R KorosecC A Mistretta
Jan 1, 1997·Journal of Vascular and Interventional Radiology : JVIR·M D AlsonJ A Kaufman
May 20, 2004·AJR. American Journal of Roentgenology·Sébastien ChomelBruno Marchand
Sep 24, 2004·AJR. American Journal of Roentgenology·Hong Lei ZhangMartin R Prince
Sep 25, 2004·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Yudong ZhuNeil M Rofsky
Jan 24, 2007·AJR. American Journal of Roentgenology·Dale R BroomeGerald A Kirk

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Citations

Apr 13, 2010·Investigative Radiology·Val M Runge
Nov 13, 2008·Investigative Radiology·Val M Runge
Jul 28, 2012·Ophthalmic Plastic and Reconstructive Surgery·Nicholas A RameyCat N Burkat

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