... Abstract An attempt was made to present a review of present-day possibilities of appraisal of the magnitude of the pulmonary collateral circulation and to evaluate particular methods on the basis of our own experience. It has been our belief that perfusion methods are suitable only...

... a depiction that combines anatomy and flow physiology, it is important to interpret each image with a solid understanding of typical arterial anatomy and corresponding collateral routes. Compensatory collateral perfusion and downstream flow status have recently emerged as pivotal variables in the clinical...

... Abstract The bronchopulmonary collaterals manifest themselves mainly in pathological conditions of the lung and may modify the cardiopulmonary haemodynamics. (2) In pulmonary artery occlusion arterial as well as venous collaterals may come into play. (3) The pulmonary artery wedge pressure...

... is consistently obtained by transorbital Doppler sonography. Internationallyaccepted criteria for diagnosing intracranial arterial obstructions are lacking. Both TCD andTCCS reliably identify collateral flow through the anterior and posterior communicatingarteries. It is unclear whether TCCS is more accurate than...

... accuracy, repeatability, and safety, although the main drawback of using lasers for this purpose is the potential collateral damage induced by the scattered energy. Collateral thermal damage adjacent to the sclerostomy site is believed to be detrimental to the long-term success of the filtering procedure...

... Abstract Clinical manifestations of acute internal carotid artery (ICA) occlusion are the most variable among all cerebrovascular syndromes. This extreme variability is related essentially to three variables: collateral circulation, cerebral vasoreactivity with hemodynamic factors...

... of improved accuracy, repeatability, and safety, although the main drawback of using lasers for this purpose is the potential collateral damage induced by the scattered energy. Collateral thermal damage adjacent to the sclerostomy site is believed to be detrimental to the long-term success of the filtering...

... in the temporal horn of the lateral ventricle. Arterial vascularization of the hippocampus is dependent on the collateral branches of the posterior cerebral artery and the anterior choroidal artery, forming the network of superficial hippocampal arteries that in turn lead to deep intrahippocampal arteries. Venous...

... and brain. Neurolog 1987;37:263-268 5. Banford J, Sandercoock P, Dennis M, Burn J, Warlow C: Classification and natural history of clinically identifiable subtypes of cerebral infarction. Lance 1991;337:1521-1526 6. Liebeskind DS: Collateral circulation. Strok 2003;34:2279-2284 7. Takahashi S...

... occlusion leads to larger territorial infarcts. However, whole territory infarcts are uncommon due to relatively well developed collateral circulation in these patients. The treatment strategy should be based on the correct understanding of the stroke mechanism in individual patients...

... circulation arteries leads to larger infarction that results in cortical symptoms - however, parts of the cortex are usually spared due to relatively well developed collateral circulation associated with prolonged perfusion impairment. In the posterior circulation, intracranial atherosclerosis is common...

... tomography angiography are noninvasive diagnostic methods. High-resolution vessel-wall magnetic resonance imaging also helps in diagnosing MMD by revealing concentric vessel-wall narrowing with basal collaterals. Surgical revascularization such as extracranial-intracranial bypass is the preferred procedure...