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Other Assets
 6 Months Ended
Jun. 30, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Assets
4.
Other Assets
 
Other assets at June 30, 2015 and December 31, 2014 consisted of $201,000 in deposits paid to our joint venture partner, Neusoft Medical Systems Co., Inc. of Shenyang, in the People's Republic of China ("Neusoft") for Attrius® systems.