The evaluation of 2D- and 3D-"time of flight" magnetic resonance angiography (MRA) in the diagnosis of renal artery stenoses

This study was carried out to evaluate time-of-flight RA in renal artery stenosis (RAS) in selected hypertensive patients (n = 41). In i.a. DSA studies, 10 unilateral, 8 bilateral RAS, and 4 unilateral RA occlusions were proven. MRA was done in coronal and axial 2D technique (FLASH), and in 3D techn...

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Published inRöFo : Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebende Verfahren Vol. 157; no. 1; p. 59
Main Authors Arlart, I P, Guhl, L, Hausmann, R
Format Journal Article
LanguageGerman
Published Germany 01.07.1992
Subjects
Adult
Aged
Aged, 80 and over
Angiography, Digital Subtraction
Evaluation Studies as Topic
Female
Humans
Hypertension, Renovascular - diagnosis
Magnetic Resonance Imaging - instrumentation
Magnetic Resonance Imaging - methods
Male
Middle Aged
Reference Values
Renal Artery - diagnostic imaging
Renal Artery - pathology
Renal Artery Obstruction - diagnosis
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Summary:This study was carried out to evaluate time-of-flight RA in renal artery stenosis (RAS) in selected hypertensive patients (n = 41). In i.a. DSA studies, 10 unilateral, 8 bilateral RAS, and 4 unilateral RA occlusions were proven. MRA was done in coronal and axial 2D technique (FLASH), and in 3D technique (FISP) using GE-pulse sequences. DSA results were correlated with both 2D-individual slices, 2D- and 3D-MIP angiograms. Highest sensitivity and specificity was found for the axial 2D individual slice analysis (88%, 85% resp.), followed by the 3D-MIP MRA (78%, 80% resp.), and axial 2D-MIP MRA (73%, 79% resp.). MRA of renal arteries used in this study shows to be not adequate to DSA results due to many drawbacks. All MRA techniques, in particular the 3D-technique, tend to overestimate RAS occasionally pretending occlusions.
ISSN:1438-9029
1438-9010