A retrospective analysis of 500 patient radiographs was conducted to measure the clinical correlation of cervical lordosis measurements and incidence of motor vehicle accident (MVA). Five hundred lateral cervical radiographs were selected at random from the practice of one of the authors (DLM). The C1-7 angle of the cervical curve was then measured by two blinded examiners. Inter-examiner relia...

The anatomical features of earlywood vessels often reflect information about past climatic conditions. We examined the relationships between mean monthly temperature and mean vessel lumen area (MVA) in various categories of earlywood vessels. Subsets of earlywood vessels of chestnut (Castanea sativa Mill.) were selected from a previously reported dataset based on several progressive size-relate...

PURPOSE We determined factors associated with long-term outcomes of patients who underwent successful percutaneous mitral balloon valvuloplasty (PMV). MATERIALS AND METHODS Between August 1980 and May 2013, 1187 patients underwent PMV at Severance Hospital, Seoul, Korea. A total of 742 patients who underwent regular clinic visits for more than 10 years were retrospectively analyzed. The endpo...

OBJECTIVES We sought to evaluate the prognostic value of the degree of commissural opening (CO) on outcome. BACKGROUND Commissural opening is the main mechanism by which the mitral valve area (MVA) increases after percutaneous mitral commissurotomy (PMC) but its impact on long-term outcome has never been evaluated. METHODS Of 1,024 consecutive patients with severe MS who underwent PMC, degr...

OBJECTIVE The aim of this study was to evaluate the effect of cardiac rhythm on the echocardiographic mitral valve area (MVA) and transmitral gradient calculation in relation to net atrioventricular compliance (Cn). METHODS Patients (n=22) with mild or moderate pure rheumatic mitral stenosis (MS) (MVA <2 cm2 and MVA >1 cm2) and atrial fibrillation (AF) were evaluated. All patients underwent t...

In this paper a flow level analysis framework is presented for calculating the performance descriptors in TCP networks based on Mean-Value Analysis (MVA). The framework is capable of handling both persistent (ftp-like) and non-persistent (Weblike) TCP connections with arbitrary topology. We can calculate not only average performance descriptors but also detailed flow level traffic and performan...

BACKGROUND In the last decade, multiple studies depicted discrepancies between mitral valvular orifice area (MVA) measurements obtained with the pressure half-time (PHT) method and invasive methods during the immediate post-percutaneous mitral valvuloplasty (PMV) period. Our aim was to assess the accuracy of Real-Time 3D echo (RT3D) to measure the MVA in the immediate post-PMV period. The invas...

OBJECTIVES This study was designed to assess effects of mitral valve annuloplasty (MVA) on mortality in patients with mitral regurgitation (MR) and left ventricular (LV) systolic dysfunction. BACKGROUND Mitral valve annuloplasty improves hemodynamics and symptoms in these patients, but effects on long-term mortality are not well established. METHODS We retrospectively analyzed consecutive p...

As distributed systems such as Internet and Integrated Services Digital Networks (ISDN) become increasingly complex, the interactions among numerous components and workloads make system performance diicult to predict reliably. It is increasingly important to apply suitable performance evaluation tools to aid system analysis and design, system connguration and capacity planning, and resource man...

This paper presents an analytical model based on mean value analysis (MVA) technique for a probabilistic re-entrant line. The objective is to develop a solution method to determine the total cycle time of a Reflow Screening (RS) operation in a semiconductor assembly plant. The uniqueness of this operation is that it has to be borrowed from another department in order to perform the production s...