In 3,000 patients who were referred for coronary CTA and CAC scoring, 52% had a CAC score of zero and 0.5% had missed CAD. During a 13-year follow-up period, no patients with a CAC score of zero ...

Work will begin in the fall to reconstruct and modernize the CTA Red and Purple Lines, including more accessible stations and a rail bypass on Chicago's North Side.

The new bypass is expected to limit delays and make travel times faster, the CTA said. It’s part of the $2.1 billion Red and Purple Modernization project.

During the study period, 3,098 patients underwent coronary CTA. Of these, 113 coronary bypass grafting patients were excluded. Of the remaining 2,985 patients, 292 (9.7%) ...