pages of a booshgs identifying tumors like this one that could have been missed. the study find they increase early detection by 29%, decrease the number of stressful false-positives and fewer women have to go back for repeat screenings. how significant is a development like this when it comes to diagnosing breast cancer? anything we can do to pick up cancers that are smaller and at an earlier stage is a huge improvement. reporter: these machines do omit more radiation than traditional mammograms since they re more expensive, they re relatively rare. doctors we spoke to hoping that will change. many seeing this as the wave of the future. mara schiavocampo, abc news, new york. and a sober announcement from former good morning america co-host joan lunden revealing the world that she has breast cancer. lunden told gma s robin roberts, the aggressive form of cancer was detected by a ultrasound. the 63-year-old mother of seven
cross-sections, like turning pages of a booshgs identifying tumors like this one that could have been missed. the study find they increase early detection by 29%, decrease the number of stressful false-positives and fewer women have to go back for repeat screenings. how significant is a development like this when it comes to diagnosing breast cancer? anything we can do to pick up cancers that are smaller and at an earlier stage is a huge improvement. reporter: these machines do omit more radiation than traditional mammograms since they re more expensive, they re relatively rare. doctors we spoke to hoping that will change. many seeing this as the wave of the future. mara schiavocampo, abc news, new york. and a sober announcement from former good morning america co-host joan lunden revealing the world that she has breast cancer. lunden told gma s robin roberts, the aggressive form of cancer was detected by a ultrasound. the 63-year-old mother of seven
hard to have a personal life it sound like? a little bit, yeah. reporter: what is it like in terms of relationships in the fashion world. do you make it a point not to date other fashion models? how do you balance that? you are on the beautiful boat in capri, half naked, and there are 20 italians fishing behind you. but it s not romantic. a model will understand that. so i don t know. reporter: you haven t figured it out yet. i don t have the answers. if anyone has the answers, please, send them to me. reporter: whatever advice anyone might have for david gandy s love life, there are few who would argue the connection he and j. lo have in her music video first love is about as hot as it gets on screen for the two single superstars. as j. lo would say, perfect. i m amy robach, in new york. later this morning, jennifer lopez takes over good morning america. part of gma s fun in the sun concert series in central park. 8:00 a.m. eastern time. that is a steamy video.
reporter: what is it like in terms of relationships in the fashion world. do you make it a point not to date other fashion models? how do you balance that? you are on the beautiful boat in capri, half naked, and there are 20 italians fishing behind you. but it s not romantic. a model will understand that. so i don t know. reporter: you haven t figured it out yet. i don t have the answers. if anyone has the answers, please, send them to me. reporter: whatever advice anyone might have for david gandy s love life, there are few who would argue the connection he and j. lo have in her music video first love is about as hot as it gets on screen for the two single superstars. as j. lo would say, perfect. i m amy robach, in new york. later this morning, jennifer lopez takes over good morning america. part of gma s fun in the sun concert series in central
now tim tebow is a man without a team. cut during the preseason by the new england patriots, even after two national championships and a heisman trophy. he does a great job of being professional. i think people are drawn to him. reporter: the florida native s trademark pose, tebowing, spread like wildfire across social media and late-night comedy. hey, everybody. jesus! reporter: we saw him on the covers of magazines like gq a national heartthrob. but, it was the humility so many came to love captured on abc in an interview with gma s robin roberts. talking about his mother. it s a key. what does it symbolize? i gave it to her because she was the key to my success. reporter: with espn s hannah storm, describing the moment on bended knee. a great opportunity in a public platform.