THE INDIVIDUAL FIBRINOLYTIC CAPACITY PREDICTS EFFICACY OF ULTRASOUND-ASSISTED CATHETER-DIRECTED THROMBOLYSIS IN PATIENTS WITH ACUTE PULMONARY EMBOLISM.

Background: Ultrasound-assisted catheter-directed thrombolysis (USAT) is nowadays available as an alternative reperfusion approach for acute pulmonary embolism (PE). The lytic agent recombinant tissue-type plasminogen activator (rt-PA) activates the effector protease plasmin to induce fibrinolysis. The aim of this study was to identify predictive markers for the efficacy of USAT in patients with acute PE.

The refinement paradox and cumulative cultural evolution: Complex products of collective improvement favor conformist outcomes, blind copying, and hyper-credulity.

Social learning is common in nature, yet cumulative culture (where knowledge and technology increase in complexity and diversity over time) appears restricted to humans. To understand why, we organized a computer tournament in which programmed entries specified when to learn new knowledge and when to refine (i.e.

Collateral assessment on magnetic resonance imaging/angiography up to 30 hours after stroke onset.

Purpose: We aimed to validate hyperintense vessel sign (HVS) on FLAIR imaging or posterior cerebral artery (PCA) laterality on MR angiography beyond 4.5 hours after stroke onset.

Materials And Methods: Data from acute ischemic stroke patients with internal carotid or middle cerebral artery occlusion who underwent CT perfusion imaging at baseline, follow-up MR perfusion imaging and angiography within 30 hours after stroke, without effective recanalization on follow-up imaging, were analysed retrospectively.

Role of cardiac computed tomography in hyperacute stroke assessment.

Background: Incorporating cardiac CT with hyperacute stroke imaging may increase the yield for cardioembolic sources. It is not clarified whether stroke severity influences on rates of intracardiac thrombus. We aimed to investigate a National Institutes of Health Stroke Scale (NIHSS) threshold below which acute cardiac CT was unnecessary.

Responses to Pattern-Violating Visual Stimuli Evolve Differently Over Days in Somata and Distal Apical Dendrites.

Scientists have long conjectured that the neocortex learns patterns in sensory data to generate top-down predictions of upcoming stimuli. In line with this conjecture, different responses to pattern-matching vs pattern-violating visual stimuli have been observed in both spiking and somatic calcium imaging data. However, it remains unknown whether these pattern-violation signals are different between the distal apical dendrites, which are heavily targeted by top-down signals, and the somata, where bottom-up information is primarily integrated.