Tiny lipid-shelled microbubbles injected in vessels may serve as an new ultrasound contrast agent to evaluate microvascular blood flow. By this microbubbles US-researcher devised a ultrasound imaging technique that can spot early signs of PAD.
This May the Brussels-based Crossroads Institute for Cardiac and Vascular Medical Education launched two new educational courses on the prevention of amputation (peripheral vascular disease) and on improving the treatment of women with cardiovascular disease.
The ankle brachial index, a ratio of blood pressure measurements used to indicate the risk of peripheral artery disease and atherosclerosis, may be useful to improve the accuracy of cardiovascular risk prediction, according to a meta-analysis of previous studies.
Scientific studies confirm that after 20 years of minimally invasive surgery (MIS) most of these operations have advantages over the equivalent, conventional surgical procedures.
The 125th Congress of the German Society of Surgery and the annual Congress of the German Society of Visceral Surgery (DVGC) in late April, examined the facts behind evidence-based medicine (EbM) under the banner Surgical Medicine - from Empiricism to Evidence, and also evaluated current opportunities in hospitals, science and research.
Along with paediatric radiology, interventional radiology will have a high profile at the 89th German Radiology Congress and 5th Joint Congress with the Austrian Radiology Society. Congress presidents Professor Dierk Vorwerk and Professor Richard Fotter outlined what's on the agenda for the expected 6,900 visitors. Training, they pointed out, will aim at those preparing to specialise in…
Professor Rémy-Jardin MD PhD heads the Department of Radiology and is Chairman of the Department of Thoracic Imaging at the Calmette Hospital, University Centre of Lille. She is also Professor of Radiology in Lille University's Medical Faculty.
New to the Siemens Medical Solutions portfolio of ultrasound applications is the syngo Arterial Health Package (AHP), which calculates cardiovascular risks by measuring carotid intima media thickness and determining the relative `vascular age´ of the vessel. Using this, along with, for example, cholesterol values and blood pressure, a physician can better assess a patient's myocardial or…
USA - A next-generation radiofrequency ablation catheter - the VNUS ClosureFASTTM - has been used by surgeon Phillip Levin MD, at Cedars-Sinai, in Los Angeles, California. An expert in VNUS closure procedure, Dr Levin has treated approximately 300 patients since 2003 with the ClosureFASTTM catheter's predecessor.
Ischaemic stroke accounts for 80-85% of all cerebrovascular accidents and causes considerable morbidity and mortality, thereby placing a significant burden on western societies. In the UK alone, stroke costs amount to 10.4 billion EUR annually. These events commonly are a consequence of systemic atherosclerotic disease and with the internal carotid arteries supplying 75% of cerebral blood flow,…
The aortocoronary bypass is an important surgical method for multivessel coronary revascularization, especially in the presence of complex lesions and in diabetic patients. It is can improve the prognosis of patients with three vessel disease and with left ventricular dysfunction1 . With regard to the type of graft used, bypasses are split into venous and arterial types. The use of venous…
Ultrasound scanning with CCDS is an established technique in shunt diagnostics and allows non-invasive assessment of vascular flow. Stenosing changes to walls of vessels used as a dialysis shunt should be detected as early as possible to avoid occlusion by a thrombus. High occlusion rates with volume flow reduced by up to 45% in one year demand ultrasound screening. The risk of haemodynamically…
There are a number of problems in contrast imaging using LevovistTM contrast agent. In Doppler mode, the problems are poor resolution and large areas of blooming. In 2nd harmonic imaging and pulse inversion imaging, there are problems related to tissue harmonic imaging (THI) because Levovist requires a high mechanical index (MI). THI increases under high-MI conditions, and THI interferes with…
Endovascular therapy of diseases of the brain-supplying blood vessels has recently sparked new interest. Hundreds of these minimally invasive and often operation-substituting interventions are now being performed annually at neuroradiological centers. The most impressive results in the treatment of intracranial aneurysms are achieved using coil embolization. Endovascular therapy has been lound to…
The rare disease Takayasu's arteritis (TA) belongs to the vasculitis group of diseases and is also known as inflammatory aortic arch syndrome or as pulseless disease because of its typical clinical picture. The pathological-anatomical manifestations include inflammatory transformation of the media and adventitia with the appearance of giant cells, hence the term giant cell arteritis is also used.…
Intravascular contrast medium is essential for enhancement of vessels and parenchyma. In this way the relation between vessels and tumours can be detected. Factors that influence the time required for a contrast bolus are the cardiac output of a patient, body weight, hydration status and the condition of the vessels. When a main vessel is occluded because of thrombosis, embolia or trauma a…
Since the beginning of the 90s, sonography has been a solid diagnostic pillar in ophthalmology centers, but it is also used by related medical disciplines, such as pediatrics, whose patients require ophthalmological treatment. For all age groups, the fundus of the eye, and especially the optic disk, is well-suited for high-frequency sonography with linear transducers. This type of examination…
Arteriosclerosis is well known as a vascular disease and cardiovascular risk factor. In its generalised form it affects not only the peripheral vessels (pelvis, legs) but also the coronary vessels and the carotid arteries. Arteriosclerosis is primarily a manifestation of advancing age, hence it is often accompanied by other diseases of the lungs and the heart as well as by metabolic diseases…
It has long been known that hypoxia at high altitudes leads to an increase of pulmonaryarterial pressure. For sensitive persons, one crucial factor for the development of HAPE is the overwhelming rise in pressure in the pulmonary circulation. Using right heart catheterization average pulmonary-arterial pressures of 60 mmHg were encountered in earlier studies of HAPE patients. A pressure increase…
Imaging of blood flow with colour Doppler sonography is an established method in prenatal medicine. Today, there are several techniques which offer colour visualisation whose quality is on a par with that of the B-mode. One example of such a technique is Advanced Dynamic Flow (ADF). Looking at two cases, we will describe the clinical use of ADF to visualise fetal vascular tumours. The quality of…
Modern imaging modalities are increasingly playing a role in planning therapy for aortic diseases and in follow-up exams after surgery or endovascular intervention. The methods employed for minimally invasive endovascular therapy have been continually improved in recent years and are now being used by vascular surgeons or radiologists to treat thoracic, thoracoabdominal and abdominal aortic…
In the Caucasian population, subarachnoid hemorrhage (SAH) due to a ruptured intracranial aneurysm is seen with an incidence of 6 to 8 per 100,000. In some specific countries such as Finland and Japan these numbers rise to 20 per 100,000. 60% of patients presenting with an aneurysmal SAH are female. The presenting symptoms are: thunderclap headache in combination with (temporary) loss of…
Using the different shaped tips of ARC 350L and TissueSeal or Ligator instruments, made by Bowa, surgeons can permanently seal large veins, arteries or bunched tissue. All of these special tools gained a red dot award for ergonomics and practicality.
For the first time in 33 years, wound healing was the focus of a dedicated session at the 33rd annual VEITHsymposium for vascular surgeons in New York (11/06). This underscores the fact that wound healing is heading increasingly towards a speciality that warrants the special attention of dedicated people willing to embrace an interdisciplinary approach to non-healing or complex wounds.
Already in 1993, the world market for contrast media was thought to be worth $ 3 billion. In 2001, an astonishing 12.2 million contrast medium-supported CT studies were carried out in Europe alone. Currently, the overall sales of contrast media are estimated to rise to $ 915 million in Europe in 2008.