https://apnews.com/78129e884de845a59a0074f4f3234bec > SPRINGFIELD, Mass. (AP) — Sometimes, Dr. Rose Ganim, chief of thoracic surgery at Baystate Medical Center in Springfield, lies awake at night contemplating the best approach for a complex operation. > When it comes to surgery, Ganim said, good planning can be the difference between life and death. And that makes getting an accurate picture of what's going on beforehand imperative.