Metallic renal artery MR imaging stent: artifact-free lumen visualization with projection and standard renal MR angiography.
A cardiac-triggered free-breathing three-dimensional (3D) balanced fast field-echo projection renal magnetic resonance (MR) angiographic sequence was investigated for in-stent lumen visualization of a dedicated metallic renal artery stent. Fourteen prototype stents were deployed in the renal arteries of six pigs (in two pigs, three stents were deployed). Projection renal MR angiography was compared with standard contrast material-enhanced 3D breath-hold MR angiography. Artifact-free in-stent lumen visualization was achieved with both projection MR angiography and contrast-enhanced MR angiography. These promising results warrant further studies for visualization of in-stent restenosis.
Spuentrup
Elmar
E
Department of Diagnostic Radiology, Technical University of Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany. spuenti@rad.rwth-aachen.de
Ruebben
Alexander
A
Stuber
Matthias
M
Günther
Rolf W
RW
Buecker
Arno
A
D000497:Alloys; D000818:Animals; D016477:Artifacts; D003287:Contrast Media; D004867:Equipment Design; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography / Q000379:methods*; D011859:Radiography; D012077:Renal Artery / Q000000981:diagnostic imaging*; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging / Q000628:therapy; D015607:Stents; D013552:Swine
D000497:Alloys; D003287:Contrast Media