https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Moving beyond a single perfusion threshold to define penumbra: a novel probabilistic mismatch definition https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21715 Sat 24 Mar 2018 08:06:26 AEDT ]]> The infarct core is well represented by the acute diffusion lesion: sustained reversal is infrequent https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20340 6 seconds, ratio>1.2) in 3/119 (2.5%) patients. Diffusion lesion reversal between baseline and 3 to 6 hours DWI was also uncommon (7/65, 11%) and often transient. Clinically relevant DLR is uncommon and rarely alters perfusion-diffusion mismatch. The acute diffusion lesion is generally a reliable signature of the infarct core.]]> Sat 24 Mar 2018 08:02:57 AEDT ]]> EPITHET: positive result after reanalysis using baseline diffusion-weighted imaging/perfusion-weighted imaging co-registration https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17780 1.2 and total coregistered mismatch volume was ≥10 mL. The primary outcome was a comparison of infarct growth in alteplase vs placebo patients with coregistered mismatch. Of 99 patients with baseline diffusion-weighted imaging and perfusion-weighted imaging, coregistration of both images was possible in 95 patients. Coregistered mismatch was present in 93% (88/95) compared to 85% (81/95) with standard volumetric mismatch. In the coregistered mismatch patients, of whom 45 received alteplase and 43 received placebo, the primary outcome measure of geometric mean infarct growth was significantly attenuated by a ratio of 0.58 with alteplase compared to placebo (1.02 vs 1.77; 95% CI, 0.33–0.99; P=0.0459). When using coregistration techniques to determine the presence of mismatch at study entry, alteplase significantly attenuated infarct growth. This highlights the necessity for a randomized, placebo-controlled, phase III clinical trial of alteplase using penumbral selection beyond 3 hours.]]> Sat 24 Mar 2018 07:57:41 AEDT ]]> Multiattribute selection of acute stroke imaging software platform for Extending the Time for Thrombolysis in Emergency Neurological Deficits (EXTEND) clinical trial https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19971 Sat 24 Mar 2018 07:54:29 AEDT ]]>