Premium
Interventional MRA using actively visualized catheters, TrueFISP, and real‐time image fusion
Author(s) -
Quick Harald H.,
Kuehl Hilmar,
Kaiser Gernot,
Hornscheidt Dirk,
Mikolajczyk Krzysztof P.,
Aker Stephanie,
Debatin Jörg F.,
Ladd Mark E.
Publication year - 2003
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.10334
Subject(s) - image fusion , magnetic resonance angiography , scanner , superior mesenteric artery , computer science , magnetic resonance imaging , medicine , angiography , interventional magnetic resonance imaging , visualization , nuclear medicine , image processing , radiology , computer vision , artificial intelligence , biomedical engineering , image (mathematics)
An integrated system for performing interventional magnetic resonance angiography (MRA) with actively visualized instruments and real‐time image fusion was implemented on a 1.5 T scanner. True fast imaging with steady precession (TrueFISP) imaging provided high acquisition speed paired with high signal‐to‐noise ratio (SNR) and contrast‐to‐noise ratio (CNR) for the simultaneous visualization of active instruments and arterial morphology. The system enabled simultaneous image reconstruction and image postprocessing of multiple receiver channels, with subsequent image fusion display in real time. Optional interleaved image acquisition in two planes provided additional important information for biplanar instrument guidance. Various vascular interventions, including selective catheterization and subsequent selective MRA of the abdominal aorta, renal arteries, superior mesenteric artery (SMA), hepatic artery, and aortic arch, were performed on 10 pigs under MR guidance. In terms of instrument contrast, image acquisition, reconstruction, and fusion speed, the setup represents a powerful platform for performing interventional MRA procedures. Magn Reson Med 49:129–137, 2003. © 2003 Wiley‐Liss, Inc.