From DotMed.net. Is it self-serving? Yes. But still a worthwhile read.
‘Many hospitals have a desire to promote their latest technology acquisitions through DTC advertising and other promotions but have been somewhat circumspect about it for a couple of reasons including vocal opposition to the practice by critics, as well as the challenging nature of communicating complex messages about intricate technology by “billboard.”‘
Here it is: http://www.dotmed.com/news/story/15221?p_begin=1