Boston , MA 121311 In the Neonatal Intensive Care Unit (NICU) at Tufts New England Medical Center in Boston, Tanya Ianniello (cq), 32, of the Fenway checked up on her daughter, Ruby (cq), 16 days old, Tuesday, December 13 2011. The infant was 2 1/2 months premature. Now, a current program at the hospital strives to prevent preterm birth by employing a fetal echocardiogram procedure. (Globe Staff Photo/Wendy Maeda) section: Health/science slug: reporter: Deborah Kotz