April 12, 2007 - Toshiba America Medical Systems Inc.'s Aquilion beta 256, a scanner that is reportedly able to measure subtle changes in blood flow or minute blockages forming in blood vessels no bigger than the average width of a toothpick, in the heart and brain, was recently installed at a U.S. university medical center for three months of safety and clinical testing.
The two-metric-ton device, installed at Johns Hopkins University, is reportedly the first of its kind in North America and the second outside of Japan, and is said to have four times the detector coverage of its immediate predecessor, the 64-slice CT.
April 17, 2025 
