P3‐348: REDUCED STRUCTURAL BRAIN NETWORK MODULARITY IN HEALTHY AGING: RESULTS FROM THE FRAMINGHAM HEART STUDY. (1st July 2019) - Seiler, Stephan; Fletcher, Evan; Beiser, Alexa S.; Himali, Jayandra J.; Satizabal, Claudia L.; Seshadri, Sudha; Maillard, Pauline; DeCarli, Charles