| Low dose pedal magnetic resonance angiography at 3 tesla with time-resolved imaging of contrast kinetics: a feasibility study. | |
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MedLine Citation:
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PMID: 18708859 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: 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. MATERIALS AND METHODS: 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). RESULTS: 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 score reflecting the amount of artifact was 2.6 for studies obtained using bilateral transverse acquisitions and 3.1 for studies obtained using separate sagittal acquisitions. CONCLUSION: Low-dose gadolinium multi-injection TRICKS and bolus-chase MR angiography at 3.0 T provides an effective and easily reproducible technique for imaging of the pedal vasculature in volunteers and has great potential for clinical application. |
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Authors:
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Suvranu Ganguli; Ivan Pedrosa; Martin P Smith; Eric R Niendorf; Scott Fredericks; Neil M Rofsky |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Investigative radiology Volume: 43 ISSN: 1536-0210 ISO Abbreviation: Invest Radiol Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-08-18 Completed Date: 2008-10-30 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0045377 Medline TA: Invest Radiol Country: United States |
Other Details:
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Languages: eng Pagination: 650-5 Citation Subset: IM |
Affiliation:
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Department of Radiology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA. sganguli@caregroup.harvard.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Contrast Media / administration & dosage* Feasibility Studies Female Foot / blood supply* Humans Image Interpretation, Computer-Assisted / methods* Kinetics Magnetic Resonance Angiography / methods* Male Radiation Dosage |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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