1,720,983 research outputs found
Pulse-wave Doppler interrogation of the abdominal aorta: A window to the left heart and vasculature
No full textHeart Failure Following Creation of an Arteriovenous Fistula for Hemodialysis.
No full textCareful analysis of the Doppler profile, performance of maneuvers during image
acquisition, and comparison of data with prior studies are basic tools that allow
us to provide useful clinical information and improved diagnostic accuracy. Here,
we discuss a patient in whom a thorough evaluation of the Doppler pattern at rest
and during maneuvers and the identification of temporal changes in cardiac
hemodynamics helped establish a diagnosis
Echocardiography detects elevated left ventricular filling pressures in heart transplant recipients
No full textIntermittent entrapment of a prosthetic mitral valve disc: What you see is not what you get
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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