1 MEDICAL IMAGING CENTERS OF AMERICA, INC. Exhibit 11.1 COMPUTATION OF EARNINGS PER SHARE Three Months Ended September 30, Nine Months Ended September 30, (in thousands except per share information) 1996 1995 1996 1995 ---- ---- ---- ---- Net income for computation of primary earnings per share $1,047 $3,621 $2,646 $5,096 Fully diluted: Adjustment for interest and amortization for the conversion of debentures 99 141 353 505 ------ ------ ------ ------ Net income for computation of fully diluted earnings per share $1,146 $3,762 $2,999 $5,601 ====== ====== ====== ====== Average shares: Common shares 2,695 2,463 2,667 2,442 Stock option and warrant equivalent shares (A) 175 183 175 183 ------ ------ ------ ------ Average shares for computation of primary earnings per share 2,870 2,646 2,842 2,625 Fully diluted: Stock option and warrant equivalent shares - difference from primary (A) 14 -- 14 -- Average shares for the conversion of debentures 360 547 442 629 ------ ------ ------ ------ Average shares for computation of fully diluted earnings per share 3,244 3,193 3,298 3,254 ====== ====== ====== ====== Net income per share: Primary $ 0.36 $ 1.37 $ 0.93 $ 1.94 ====== ====== ====== ====== Fully diluted $ 0.35 $ 1.18 $ 0.91 $ 1.72 ====== ====== ====== ====== (A) The treasury stock method was used to calculate the common stock equivalent number of shares from options and warrants. Page 13 of 13