Document Detail


Real-time imaging and triggering of 3D contrast-enhanced MR angiograms using MR fluoroscopy.
MedLine Citation:
PMID:  10504048     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Although a variety of timing techniques and data acquisition strategies have been used for three-dimensional contrast-enhanced MR angiography, many are still limited by inadequate overall reliability, limited spatial resolution, or complexity. A technique is presented in this work in which contrast arrival is detected in the targeted vasculature in real time using MR fluoroscopy. Upon detection the operator triggers a 3D MR angiographic acquisition which uses an elliptical centric view order. It is shown that the view order intrinsically provides a high degree of venous suppression which in turn allows acquisition times of 30 s or longer, permitting high spatial resolution. The reliability of fluoroscopic triggering in bolus detection is shown to be over 90%. The technique provides high quality contrast-enhanced MR angiograms for many vascular regions.
Authors:
S J Riederer; S B Fain; D G Kruger; R F Busse
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Magma (New York, N.Y.)     Volume:  8     ISSN:  0968-5243     ISO Abbreviation:  MAGMA     Publication Date:  1999 Aug 
Date Detail:
Created Date:  1999-12-17     Completed Date:  1999-12-17     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  9310752     Medline TA:  MAGMA     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  196-206     Citation Subset:  IM    
Affiliation:
Magnetic Resonance Laboratory, Mayo Clinic, Rochester, MN 55905, USA. riederer@mayo.edu
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MeSH Terms
Descriptor/Qualifier:
Carotid Arteries / pathology
Contrast Media*
Fluoroscopy / instrumentation,  methods*
Gadolinium / diagnostic use
Humans
Iliac Artery / pathology
Image Enhancement / methods*
Magnetic Resonance Angiography / instrumentation,  methods*
Phantoms, Imaging
Renal Artery / pathology
Renal Veins / pathology
Grant Support
ID/Acronym/Agency:
CA37993/CA/NCI NIH HHS; HL37310/HL/NHLBI NIH HHS
Chemical
Reg. No./Substance:
0/Contrast Media; 7440-54-2/Gadolinium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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