Evaluation of Collateral Circulation Through the Circle of Willis in Internal Carotid Artery Occlusion Using Non-Contrast 4D-MRA: A Comparative Analysis of 4D-PACK, 4D-S-PACK, TOF-MRA, CE-MRA and DSA

Br J Radiol. 2026 Apr 15:tqag081. doi: 10.1093/bjr/tqag081. Online ahead of print.ABSTRACTOBJECTIVES: This study aimed to evaluate the accuracy of non-contrast 4D-MRA techniques (4D-PACK and 4D-S-PACK) in assessing collateral circulation via the Circle of Willis (CoW) in patients with internal carot

J Jin Zhang

Online Searches for Gun-Related Harm

JAMA Netw Open. 2026 Apr 1;9(4):e267715. doi: 10.1001/jamanetworkopen.2026.7715.ABSTRACTIMPORTANCE: Gun violence continues to be a significant public health concern. Access to information about gun-related harm has increased with the advent of social media and websites that host information on this

K Kimberly J Mitchell