M asterful mitral valve (MV) repair demands thorough understanding of integrated mitral apparatus structure and mechanics. One consistently reported feature, the saddle shape of the mitral annulus, was recognized in the process of resolving the contradiction posed by an apparently high prevalence of MV prolapse (MVP) in otherwise healthy individuals: A normal saddle-like shape will show opposit...

Objective: To describe the prevalence of and findings associated with annular pancreas on CT, MRI, and endoscopic retrograde cholangiopancreatography (ERCP). Design: Retrospective analysis. Participants: 42 patients with annular pancreas who underwent CT, MRI, or ERCP made up the study group. The control group consisted of 30 patients evaluated for nonspecific upper abdominal pain who had a nor...

OBJECTIVES We used the Doppler proximal flow convergence technique as a physiologic tool to explore the effects of the time courses of mitral annular area and transmitral pressure on dynamic changes in regurgitant orifice area. BACKGROUND In functional mitral regurgitation (MR), regurgitant flow rate and orifice area display a unique pattern, with peaks in early and late systole and a midsyst...

Introduction Annular pancreas (from the Latin annularis, meaning ring-shaped) is a rare congenital disorder of the pancreas first recognised by Tiedeman in 1818. This abnormality, although at times clinically silent, may be the cause of a broad spectrum of disease. Complications range from neonatal intestinal obstruction to more complex pathologies in the adult. In cases of neonatal obstruction...

Abstract—A functional microstrip circuit module for annular slot antenna is proposed. This module consists of an annular microstrip line component, two PIN diodes and a DC bias circuit. Reconfigurable circular polarizations can be simply controlled by this functional module. Axial ratio is adjustable by changing the clip angle of the notch made by the annular microstrip line component. Simulate...

BACKGROUND Mitral annular calcification has been associated with various systemic and cardiac diseases, with a higher prevalence in women and patients over 70. A possible association between mitral annular calcification and coronary artery disease has recently been suggested. OBJECTIVE To determine the prevalence of severe coronary artery disease in younger patients with mitral annular calcif...

Background: Mitral annular calcification has been associated with various systemic and cardiac diseases, with a higher prevalence in women and patients over 70. A possible association between mitral annular calcification and coronary artery disease has recently been suggested. Objective: To determine the prevalence of severe coronary artery disease in younger patients with mitral annular calcif...

Fluorescence quenching methods have been used to study interactions of anionic phospholipids with the potassium channel KcsA from Streptomyces lividans. Quenching of the Trp fluorescence of KcsA reconstituted into mixtures of dioleoylphosphatidylcholine (DOPC) and an anionic phospholipid with dibromostearoyl chains is more marked at low mole fractions of the brominated anionic phospholipid than...

OBJECTIVES Mitral annular calcification is associated with significant morbidity and mortality at the time of mitral valve surgery. However, few data are available describing the impact of mitral annular calcification on early and late outcomes following mitral valve repair in the current era. METHODS Between 2001 and 2011, 625 patients were referred for mitral valve repair of severe mitral r...

A procedure is provided for decomposing the linear field of flat pulsed wave annular arrays into an equivalent set of known limited diffraction Bessel beams. Each Bessel beam propagates with known characteristics, enabling good insight into the propagation of annular fields to be obtained. Numerical examples are given in the context of a 10-ring annular array operating at a central frequency of...