HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Hug, J. Articles by Fleck, E. Search for Related Content PubMed PubMed Citation Articles by Hug, J. Articles by Fleck, E.

Coronary Arterial Stents: Safety and Artifacts during MR Imaging¹

¹ From the Department of Internal Medicine and Cardiology, Charité, Campus Virchow-Klinikum Humboldt University & German Heart Institute, Augustenburger Platz 1, 13353 Berlin, Germany (J.H., E.N., A.B., H.O., E.F.), and Philips Medical Systems, Hamburg, Germany (B.S.). Received December 28, 1998; revision requested February 23, 1999; final revision received November 16; accepted December 6. Address correspondence to J.H. (e-mail: Juergen.hug@charite.de).

PURPOSE: To investigate the safety and imaging artifacts with different coronary arterial stents and magnetic resonance (MR) imaging sequences.

MATERIALS AND METHODS: The heating, artifacts, and ferromagnetism with different stents were studied with a 1.5-T MR tomograph with ultrafast gradients by using turbo spin-echo, turbo gradient-echo, and echo-planar imaging sequences. Nineteen stents, which were 8–25 mm in length and 3.0–4.5 mm in diameter, were evaluated. Stent deviation induced by the magnetic field and during MR imaging, migration, and heating caused by the radio-frequency pulses were examined. The size of imaging artifacts was measured with all the stents under standardized conditions and with six stents after their implantation into the coronary arteries of freshly explanted pig hearts.

RESULTS: All except two types of stents showed minimal ferromagnetism. No device migration or heating was induced. Turbo spin-echo images had minimal artifacts; larger artifacts were seen on the turbo gradient-echo and echo-planar images. With ultrafast gradients, the artifacts on the echo-planar images were substantially reduced.

CONCLUSION: The studied coronary stents were not influenced by heating or motion during 1.5-T MR imaging. Artifact size differed according to the type and size of the stent and the MR imaging sequence used. Thus, patients with these stents can be safely examined.

Index terms: Coronary vessels, MR, 54.121411, 54.121412, 54.121416, • Coronary vessels, stents and prostheses, 54.126 • Magnetic resonance (MR), artifact, 54.121411, 54.121412, 54.121416 • Magnetic resonance (MR), rapid imaging, 54.121411, 54.121412, 54.121416, • Magnetic resonance (MR), safety, 54.121411, 54.121412, 54.121416

This article has been cited by other articles:

				G. N. Levine, A. S. Gomes, A. E. Arai, D. A. Bluemke, S. D. Flamm, E. Kanal, W. J. Manning, E. T. Martin, J. M. Smith, N. Wilke, et al. Safety of Magnetic Resonance Imaging in Patients With Cardiovascular Devices: An American Heart Association Scientific Statement From the Committee on Diagnostic and Interventional Cardiac Catheterization, Council on Clinical Cardiology, and the Council on Cardiovascular Radiology and Intervention: Endorsed by the American College of Cardiology Foundation, the North American Society for Cardiac Imaging, and the Society for Cardiovascular Magnetic Resonance Circulation, December 11, 2007; 116(24): 2878 - 2891. [Abstract] [Full Text] [PDF]

				G. Muhlenbruch, A. H. Mahnken, M. Das, R. Blindt, C. Hohl, J. E. Wildberger, R. W. Gunther, H. P. Kuhl, and R. Koos Evaluation of Aortocoronary Bypass Stents with Cardiac MDCT Compared with Conventional Catheter Angiography Am. J. Roentgenol., February 1, 2007; 188(2): 361 - 369. [Abstract] [Full Text] [PDF]

				C. C. Genson, C. E. Blane, M. A. Helvie, S. A. Waits, and T. L. Chenevert Effects on Breast MRI of Artifacts Caused by Metallic Tissue Marker Clips Am. J. Roentgenol., February 1, 2007; 188(2): 372 - 376. [Abstract] [Full Text] [PDF]

				M. R. Patel, T. S. E. Albert, D. E. Kandzari, E. F. Honeycutt, L. K. Shaw, M. H. Sketch Jr, M. D. Elliott, R. M. Judd, and R. J. Kim Acute Myocardial Infarction: Safety of Cardiac MR Imaging after Percutaneous Revascularization with Stents Radiology, September 1, 2006; 240(3): 674 - 680. [Abstract] [Full Text] [PDF]

				F. Pugliese, F. Cademartiri, C. van Mieghem, W. B. Meijboom, P. Malagutti, N. R. A. Mollet, C. Martinoli, P. J. de Feyter, and G. P. Krestin Multidetector CT for visualization of coronary stents. RadioGraphics, May 1, 2006; 26(3): 887 - 904. [Abstract] [Full Text] [PDF]

				E. Spuentrup, A. Ruebben, A. Mahnken, M. Stuber, C. Kolker, T. H. Nguyen, R. W. Gunther, and A. Buecker Artifact-Free Coronary Magnetic Resonance Angiography and Coronary Vessel Wall Imaging in the Presence of a New, Metallic, Coronary Magnetic Resonance Imaging Stent Circulation, March 1, 2005; 111(8): 1019 - 1026. [Abstract] [Full Text] [PDF]

				F. G. Shellock, M. Gounis, and A. Wakhloo Detachable Coil for Cerebral Aneurysms: In Vitro Evaluation of Magnetic Field Interactions, Heating, and Artifacts at 3T AJNR Am. J. Neuroradiol., February 1, 2005; 26(2): 363 - 366. [Abstract] [Full Text] [PDF]

				S K Prasad and D J Pennell Safety of cardiovascular magnetic resonance in patients with cardiovascular implants and devices Heart, November 1, 2004; 90(11): 1241 - 1244. [Full Text] [PDF]

				F. G. Shellock and J. V. Crues MR Procedures: Biologic Effects, Safety, and Patient Care Radiology, September 1, 2004; 232(3): 635 - 652. [Abstract] [Full Text] [PDF]

				T. C. Gerber, P. Fasseas, R. J. Lennon, V. U. Valeti, C. P. Wood, J. F. Breen, and P. B. Berger Clinical safety of magnetic resonanceimaging early after coronary artery stent placement J. Am. Coll. Cardiol., October 1, 2003; 42(7): 1295 - 1298. [Abstract] [Full Text] [PDF]

				E. Spuentrup, A. Ruebben, M. Stuber, R. W. Gunther, and A. Buecker Metallic Renal Artery MR Imaging Stent: Artifact-free Lumen Visualization with Projection and Standard Renal MR Angiography Radiology, June 1, 2003; 227(3): 897 - 902. [Abstract] [Full Text] [PDF]

				E. Nagel, T. Thouet, C. Klein, S. Schalla, A. Bornstedt, B. Schnackenburg, J. Hug, E. Wellnhofer, and E. Fleck Noninvasive Determination of Coronary Blood Flow Velocity With Cardiovascular Magnetic Resonance in Patients After Stent Deployment Circulation, April 8, 2003; 107(13): 1738 - 1743. [Abstract] [Full Text] [PDF]

				W. Y. Kim, P. G. Danias, M. Stuber, S. D. Flamm, S. Plein, E. Nagel, S. E. Langerak, O. M. Weber, E. M. Pedersen, M. Schmidt, et al. Coronary Magnetic Resonance Angiography for the Detection of Coronary Stenoses N. Engl. J. Med., December 27, 2001; 345(26): 1863 - 1869. [Abstract] [Full Text] [PDF]