Butterfly Network Inc. said Friday it has agreed to merge with special purpose acquisition corporation Longview Acquisition Corp. in a deal with an enterprise value of $1.5 billion. The combined company will list on the New York Stock Exchange under the ticker "BFLY." It will have about $584 million in cash to develop its digital imaging technology. Butterfly iQ is an ultrasound transducer that can perform "whole body imaging' with a single handheld probe using chip technology that connects to a mobile phone or tablet, the companies said in a statement.