Timing algorithm for bolus chase MR digital subtraction angiography

To acquire multiple longitudinal locations in the lower extremity after a single contrast injection, appropriate table translation and contrast injection are required. An approximate model based on constant bolus velocity was developed to describe the space-time course of a contrast bolus in the low...

Full description

Saved in:
Bibliographic Details
Published inMagnetic resonance in medicine Vol. 39; no. 5; p. 691
Main Authors Wang, Y, Lee, H M, Avakian, R, Winchester, P A, Khilnani, N M, Trost, D
Format Journal Article
LanguageEnglish
Published United States 01.05.1998
Subjects
Adult
Algorithms
Contrast Media
Female
Gadolinium DTPA
Humans
Injections, Intravenous
Leg - blood supply
Magnetic Resonance Angiography - methods
Male
Peripheral Vascular Diseases - diagnosis
Subtraction Technique
Time Factors
Online AccessGet more information

Cover

More Information
Summary:To acquire multiple longitudinal locations in the lower extremity after a single contrast injection, appropriate table translation and contrast injection are required. An approximate model based on constant bolus velocity was developed to describe the space-time course of a contrast bolus in the lower extremity. This model was verified in dynamic MR angiograms acquired in a group of patients using time-resolved 2D MR digital subtraction angiography (MRDSA). From this contrast bolus passage model, a timing algorithm for table translation and contrast injection was developed for bolus chase MRDSA, subsequently validated in bolus chase 2D MRDSA experiments. All targeted major peripheral arteries were well depicted in bolus chase 2D MRDSA using this timing algorithm and a single 15-ml contrast dose.
ISSN:0740-3194
DOI:10.1002/mrm.1910390504