11 documents found, page 1 of 2

Quasi-iatrogenia vascular – dois relatos de caso

INTRODUÇÂO: As lesões vasculares iatrogénicas são uma causa importante de morbilidade e mortalidade após intervenções cirúrgicas ortopédicas ou neurocirúrgicas. Neste artigo, os autores apresentam dois casos clinicos de quasi-iatrogenia vascular. CASOS CLÍNICOS: Dois casos, um procedimento ortopédico e um procedimento neurocirúrgico, são apresentados. O primeiro caso refere-se a uma mulher de 80 anos com migraç...

THORACIC AORTIC ANEURISM 29 YEARS AFTER LACERATION AND PRIMARY REPAIR

Blunt thoracic aortic injury is a highly lethal injury both in the prehospital and in hospital setting.Survival of this injury is rare and therefore there is few data on the long term prognosis of these patients.We report a case of a patient who underwent primary repair of a traumatic thoracic aorta laceration and presented 29 years later with an aortic aneurysm in the same location as the initial repair. The p...

PERICARDIAL NEO-AORTA FOR RESOLUTION OF A VASCULAR CATASTROPHY. INNOVATIVE SOLU...

Introduction and Purpose: Aortic prosthetic graft infection is a rare but potentially fatal complication. Treatment require the complete excision of the prosthetic material, debridement of the surrounding tissues, broad-spectrum antibiotics, and limb revascularization which can be done through in situ reconstruction or by extra-anatomic solutions. The authors present a case of an in situ reconstruction wit...

FFC NMR relaxometer with magnetic flux density control

This paper describes an innovative solution for the power supply of a fast field cycling (FFC) nuclear magnetic resonance (NMR) spectrometer considering its low power consumption, portability and low cost. In FFC cores, the magnetic flux density must be controlled in order to perform magnetic flux density cycles with short transients, while maintaining the magnetic flux density levels with high accuracy and hom...

ENDOVASCULAR TREATMENT FOR TOTALLY IMPLANTABLE CENTRAL VENOUS ACCESS DEVICE-REL...

Introduction: Benign superior vena cava syndrome (SVCs) is rare and may be related to a totally implantable vascular access device (TIVAD). In the past 20 years, percutaneous endovascular placement of a stent has been rising as a viable option for SVCs treatment. Case Report: We report the case of a 42-year-old woman with the diagnosis of classical Hodgkin lymphoma who presented a SVCs one year after placement ...

A terapêutica antitrombótica: atual e em desenvolvimento

Thrombosis is one of the major causes of death worldwide. Continous increase in the knowledge about the pathophysiological changes associated with thrombosis led to the development of effective therapies (anti-platelet, anticoagulant and fibrinolytics) for the prevention and treatment of the thromboembolic disease. However, better understanding of the underlying processes is still crucial for the development of...

Control of a Power Supply with Cycling Current Using Different Controllers

Fast Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) relaxometers require controlled current sources in order to get accurate flux density with respect to its magnet. The main elements of the proposed solution are a power semiconductor, a DC voltage source and the magnet. The power semiconductor is commanded in order to get a linear control of the flux density. To implement the flux density control, a Hall...

FFC NMR Relaxometers on Education Topologies, control techniques and electromag...

Control of a power supply with cycling current using different controllers

Fast Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) relaxometers require controlled current sources in order to get accurate flux density with respect to its magnet. The main elements of the proposed solution are a power semiconductor, a DC voltage source and the magnet. The power semiconductor is commanded in order to get a linear control of the flux density. To implement the flux density control, a Hall...

Control of a power supply with cycling current using different controllers

Fast Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) relaxometers require controlled current sources in order to get accurate flux density with respect to its magnet. The main elements of the proposed solution are a power semiconductor, a DC voltage source and the magnet. The power semiconductor is commanded in order to get a linear control of the flux density. To implement the flux density control, a Hall...