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(Circulation. 2008;118:211-212.)
© 2008 American Heart Association, Inc.

Clinical Summaries

An extract of the first 250 words of the full text is provided, because this article has no abstract.

	Feasibility of Real-Time Magnetic Resonance Imaging for Catheter Guidance in Electrophysiology Studies

 
Electrophysiology procedures provide a cure for many atrial and ventricular arrhythmias but remain associated with failures and complications, much of which likely derive from lack of soft-tissue visualization with fluoroscopy. As an alternative imaging modality, magnetic resonance imaging offers 3-dimensional imaging with excellent soft-tissue resolution without the ionizing radiation inherent to fluoroscopy. However, potential interactions of static and gradient magnetic fields and radiofrequency energy from the magnetic resonance scanner with the electrophysiology system must be addressed for safe performance of real-time magnetic resonance–guided electrophysiology procedures. In the present study, we report the feasibility of performing electrophysiology studies with a custom electrophysiology system compatible with real-time magnetic resonance guidance. Successful anatomic targeting of catheters was demonstrated, and comprehensive electrophysiology studies with recording of intracardiac electrograms and pacing were performed. The capabilities of magnetic resonance guidance for superior real-time resolution of anatomic soft tissues, identification of scar arrhythmia substrates, and monitoring of lesion formation within linear sets and with respect to surrounding structures may improve the safety and efficacy of complex electrophysiology procedures. See p 223.

	Dietary Patterns and Risk of Mortality From Cardiovascular Disease, Cancer, and All Causes in a Prospective Cohort of Women

 
Overall dietary patterns can be defined as combinations of characteristic food groups that reflect existing eating habits of a specific study population. The association between such overall dietary patterns and mortality due to cardiovascular disease and other chronic diseases is largely unknown. We followed a population of >70 000 apparently healthy US women over the course of 18 years, assessing dietary intake repeatedly. By applying factor analysis, we identified 2 major dietary patterns. A greater . . . [Full Text of this Article]

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