New order bookings of $22.6 million in second quarter; Order bookings of $40.5 million in first half of 2014 compared with $33 million for the entire 12-month period of 2013; Four VISIUS Surgical Theatres booked in the second quarter across the globe; Backlog increases 26 percent in first six months to record $128.7 million; Quarterly revenues of $4.3 million; Gross margin 45.0 percent versus 30.4 percent in prior-year quarter; Company updates 2014 full-year guidance, and provides preliminary outlook for 2015 revenues in the $60 million to $65 million range