Developmental venous anomalies (DVAs) are common variants of cerebral venous drainage that are typically incidental findings on contrast-enhanced MR imaging studies. We present four cases of asymptomatic DVAs that demonstrate increased cerebral blood flow, cerebral blood volume, mean transit time, and time to peak on perfusion MR images. Our study indicates that alterations in perfusion MR imag...

OBJECTIVES Electrical spinal cord stimulation (SCS) is used to treat of chronic pain, obstructive arterial-related ischemia, and anginal pain. This study investigated cerebral blood perfusion, cerebrospinal fluid (CSF) catecholamine levels, and oxidative stress before and after cervical SCS in comatose patients. METHODS We evaluated cerebral blood perfusion, catecholamine (dopamine, norepinep...

OBJECTIVES Our purpose of this study was to assess the cerebral hemodynamic improvement with perfusion computed tomography (CT), before and after superficial temporal artery (STA) to middle cerebral artery (MCA) bypass surgery in patients with cerebrovascular steno-occlusive diseases including both moyamoya disease and nonmoyamoya steno-occlusions. MATERIALS AND METHODS Twenty-four STA-MCA by...

PURPOSE Cerebral misery perfusion (CMP) is a condition where cerebral autoregulatory capacity is exhausted, and cerebral blood supply in insufficient to meet metabolic demand. We present an educational review of this important condition, which has a range of clinical manifestations. METHOD A non-systematic review of published literature was undertaken on CMP and major cerebral artery occlusiv...

Сarotid atherosclerotic disease increase the risk of ischemic stroke, with various clinical manifestations from asymptomatic to fatal. Cerebral blood flow depends not only on degree stenosis, but also patency collateral tract, affecting severity picture. Criteria for hemodynamic significance carotid artery stenosis and, based them, indications surgical treatment have been developed. But there i...

BACKGROUND Previous studies have used the dynamic susceptibility contrast enhanced (DSCE) magnetic resonance (MR) imaging technique to measure cerebral perfusion in adults. OBJECTIVE To assess the feasibility of the technique in a heterogeneous cohort of sick human infants and identify cerebral perfusion abnormalities. METHODS Perfusion measurements were made by characterising the changing ...

Cerebral autoregulation (CA) describes the capability of the brain to maintain its flow as relatively stable over a wide rage of mean arterial pressures (MAPs), for example, from 60 to 150 mm Hg. Because the brain is encompassed in the skull, CA is vital for preventing cerebral edema and hemorrhage, as illustrated in some patients experiencing acute liver failure.1 Also, CA counteracts the effe...

Optimal perfusion strategies for extensive aortic resection in patients with mega-aortic syndromes include: tailored myocardial preservation, antegrade cerebral perfusion, controlled hypothermia and selective organ perfusion. Typically, the aortic arch resection and elephant trunk procedure are performed under hypothermic circulatory arrest with myocardial and cerebral protection. However, mese...

Congratulations to Urbanski et al. for their study [1]. We benefited a lot from this report. But we want to put emphasis on some points that—we think—should be taken into consideration by the authors. Antegrade cerebral perfusion technique is based on two factors: perfusion pressure and direction of the kinetic energy of pump output (2 l/min/m) during cooling down and warming up periods. Cannul...

Sedatives and anesthetics can influence cerebral metabolism and respiratory and cardiovascular dynamics, which results in changes in cerebral perfusion. This is of major importance when functional brain imaging techniques are used to measure cerebral blood flow or to evaluate neurotransmitter systems, and also during neurosurgery. In the present review, the influences on brain perfusion of diff...