- Perfusion Scotoma: A Potential Core Underestimation in CT Perfusion in the Delayed Time Window in Patients with Acute Ischemic Stroke
Ghost infarct core has been described to account for overestimating core infarct size in the early time period (<3 hours). The authors describe the phenomenon of underestimating core infarct size on CT perfusion in the later time period (>6 hours), which they have termed perfusion scotoma.
- Angiographically Occult Subarachnoid Hemorrhage: Yield of Repeat Angiography, Influence of Initial CT Bleed Pattern, and Sources of Diagnostic Error in 242 Consecutive Patients
Atypical aneurysms and small arteriovenous shunts are important causes of SAH negative findings on angiography. Improving DSA technique can modestly reduce the need for repeat DSA; however, a small fraction of SAH sources remain occult despite adequate technique. These findings support the practice of repeating DSA in patients with a nonperimesencephalic SAH pattern.
Welcome to the new AJNR, Updated Hall of Fame, and more. Read the full announcements.
AJNR is seeking candidates for the position of Associate Section Editor, AJNR Case Collection. Read the full announcement.