Abstract:
:The purpose of the study was to implement a three-dimensional (3D) magnetic resonance (MR) angiographic technique with acquisition times on the order of 800 msec with use of a spoiled gradient-echo pulse sequence (repetition time, 1.60 msec; echo time, 0.65 msec) and bolus intravenous injection of contrast material doses as small as 6 mL. High-spatial-resolution conventional MR angiography performed with 30 mL of gadopentetate dimeglumine was the reference standard. As implemented, subsecond 3D MR angiography allowed temporal sampling that was rapid enough to depict short-lived processes, as illustrated in patients with shunts and dissections. With small contrast material doses and subsecond frame rates, it is also possible to measure pulmonary arteriovenous circulation times with this 3D MR angiographic technique.
journal_name
Radiologyjournal_title
Radiologyauthors
Finn JP,Baskaran V,Carr JC,McCarthy RM,Pereles FS,Kroeker R,Laub GAdoi
10.1148/radiol.2243010984subject
Has Abstractpub_date
2002-09-01 00:00:00pages
896-904issue
3eissn
0033-8419issn
1527-1315journal_volume
224pub_type
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