Toshiba America Medical Systems (TAMS) of Tustin, CA, has promoted Doug Ryan to the position of vice president of marketing and strategic development.
Previously director of TAMS' CT division, Ryan now has responsibility for all of the vendor's U.S. business units, including CT, MRI, ultrasound, and vascular x-ray. He will also handle strategic marketing for Toshiba.
Ryan joined TAMS in 2001 as a CT modality manager, and in 2002 he was named director of Toshiba's CT business unit. He was promoted to senior director of the CT unit in 2007.
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![Axial images from unenhanced calcium score cardiac CT (left) and curved planar reformation images from CT angiography (right) show that higher long-term exposure to air pollution is associated with greater coronary artery calcium and more obstructive coronary artery disease (CAD). Top row: Images in a 68-year-old male patient with higher 10-year mean ambient air pollution exposure (7.9 μg/m3 for particulate matter measuring ≤2.5 μm in diameter [PM2.5] and 17.4 parts per billion [ppb] for NO2) with extensive CAD (coronary artery calcium score [CACS] >1,000 and obstructive CAD [≥70% diameter stenosis]). Bottom row: Images in a 57-year-old female patient with lower 10-year mean ambient air pollution exposure (6.3 μg/m3 for PM2.5 and 4.6 ppb for NO2) with no CAD (CACS = 0 and no obstructive stenosis).](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/06/hanneman.r6SMLzkezo.png?auto=format%2Ccompress&dpr=2&fit=crop&h=167&q=70&w=250)
