نتایج جستجو برای: branch diameter
تعداد نتایج: 189551 فیلتر نتایج به سال:
The paper discusses a simple multi-variable optimization problem: the bifurcation of a branch of a pipe of circular cross-section with a given initial radius r0 and delivering a given mass flow rate m0.The optimization is performed using an objective function that prescribes the minimization of the entropy generation rate due — in this simple case — only to viscous flow effects within the tubes...
1. By use of rabbit isolated perfused intact ears and isolated perfused segments of central and first generation daughter branch ear arteries, we investigated the actions of charybdotoxin (ChTX), a blocker of calcium-activated K+ channels (KCa channels), and N omega-nitro-L-arginine methyl ester (L-NAME) on pressure-flow and diameter-flow relationships. 2. ChTX (1 nM) induced an upwards shift i...
The accessory internal thoracic artery is a relatively large branch of the initial part of the internal thoracic artery, which was found in 4.54% of 22 cadavers studied in the Institute of Anatomy of the Medical School of Aristotle University of Thessaloniki. The course of this artery lies usually in the inner surface of the anterolateral thoracic wall and its diameter is sometimes almost equiv...
Background and Objectives: Drug-eluting stents (DES) have been used worldwide for conducting safe and effective percutaneous coronary intervention (PCI) for treating coronary artery disease. However, the DES might cause a higher frequency of an acute side branch occlusion or stent jails near the target lesion after PCI than that with using bare metal stents (BMS). This may be due to the eluted ...
INTRODUCTION AND OBJECTIVES It is uncertain whether side branch predilatation before main vessel stenting is necessary. We evaluated the effect of side branch predilatation on outcomes in percutaneous coronary intervention for true nonleft main bifurcation determined by the Medina classification using the provisional approach. METHODS Target vessel failures (composite of cardiac death, myocar...
Branch identification is key to the robotic pruning system for apple trees. High accuracy and positioning of junction points between branch trunk are important prerequisites with a arm. Recently, development deep learning, Transformer has been gradually applied field computer vision achieved good results. However, effect based on not verified so far. Taking Swin-T Resnet50 as backbone, this stu...
OBJECTIVE The purpose of this study was to compare the branch morphology and short-term outcome of endovascular aneurysm repair using multibranched thoracoabdominal custom-made stent grafts (CSGs) vs standard stent grafts (SSGs). METHODS Data on patient demographics, aortic morphology, component use, and outcome were collected prospectively. Final branch length (cuff to target artery orifice)...
Context Non-swelling autoimmune pancreatitis with multiple pancreatic pseudocysts is very rare. Case report A Seventy-five-year-old man was referred to our hospital for further examination of multiple pancreatic cysts with nodules detected by computed tomography. Endoscopic ultrasound examination showed a pancreatic cyst with a nodule (6.3 mm in diameter) in the pancreatic head and another panc...
OBJECTIVES/HYPOTHESIS To illustrate detailed anatomy of the extracranial portion of the glossopharyngeal nerve in the parapharyngeal space as encountered during transoral surgery. STUDY DESIGN Prospective cadaveric dissection. All dissections were performed transorally and confirmed with transcervical dissection. METHODS Eight color-injected cadaveric heads (16 sides) were dissected to demo...
BACKGROUND Permanent pacemaker (PPM) requirement is a recognized complication of transcatheter aortic valve implantation. We assessed the UK incidence of permanent pacing within 30 days of CoreValve implantation and formulated an anatomic and electrophysiological model. METHODS AND RESULTS Data from 270 patients at 10 centers in the United Kingdom were examined. Twenty-five patients (8%) had ...
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