Alberta Stroke Program Early CT Score
ASPECTS is a 10-point topographic score that quantifies early ischemic change across the middle cerebral artery territory on non-contrast CT in acute stroke. Starting from 10, a point is subtracted for each of ten defined regions showing early ischemia, giving a fast, reproducible measure of infarct extent — lower scores mean more established injury. It became central to acute-stroke workflow because it was used to select (and exclude) patients in the landmark thrombectomy trials, and it remains one of the most-referenced scores at the CT scanner.
Introduced the 10-point non-contrast-CT topographic score of early MCA ischemia, later adopted to select and exclude patients in the landmark thrombectomy trials.
In 283 anterior circulation LVO stroke patients, adding the Perfusion Collateral Impairment Score (PCIS) to standard collateral scores improved 90-day poor-outcome prediction (COVES+PCIS aOR 1.53, 95% CI 1.17–2.01), but PCIS alone did not outperform comparators after correction.
Systematic review of ultrasound teaching methods finds blended learning (classroom + online) and simulation-based training improve both cognitive and practical skills in medical students more than traditional instruction alone. No single dominant pedagogy identified; flipped cla…
Fish-mouthing (focal end convergence) occurred in 20% of Surpass Evolve flow diverter cases at 1 month but resolved in most, falling to 7% at 1 year. Fusiform shape, multiple aneurysms, and MCA location were risk factors. Retrospective; n=94.
A DL-generated high-contrast thin-slice CT (HCCT) from plain NCCT pushed inter-rater ASPECTS correlation from 0.72 to 0.94 (p<0.001) in 303 LVO stroke patients across 4 centers — outperforming standard NCCT for early ischemic change detection and favorable-outcome prediction.
FDA 510(k) clearance granted to Brainomix 360 Hyperdensity, an AI-based software for detecting hyperdense vessel signs on CT — a key early marker of large-vessel occlusion stroke. Product code QIH.
Background Ischemic lesion net water uptake (NWU), a CT biomarker of cerebral edema, has been linked to poor outcomes in patients with acute ischemic stroke (AIS) due to large vessel occlusion (LVO). Whether NWU outperforms other imaging markers in predicting futile recanaliza...
Giant cell tumor of tendon sheath (tenosynovial giant cell tumor) is the 2nd most common hand/wrist mass. US shows a homogeneously hypoechoic lobulated mass near tendon, not moving with it, often with posterior acoustic enhancement.
The Radiology Assistant reviews the RECIST 1.1 criteria for tumor response assessment, covering target lesion selection, measurement, and response categories, with a look at newer immunotherapy-specific criteria like iRECIST.
RadPigeon is an independent radiology news digest and is not affiliated with or endorsed by Barber et al. (ASPECTS Study Group). “ASPECTS” is a trademark of its owner and is named here only to refer to the system. Always consult the official source for the exact, current criteria.
