Three Months Ended

Six Months Ended

June 30,

2013

2012

2013

2012

Net income attributable to RadNet, Inc.'s common stockholders

$

2,686

$

2,946

$

1,344

$

2,835

BASIC NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS

Weighted average number of common shares outstanding during the period

39,217,122

37,761,316

39,038,904

37,715,723

Basic net income per share attributable to RadNet, Inc.'s common stockholders

$

0.07

$

0.08

$

0.03

$

0.08

DILUTED NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS

Weighted average number of common shares outstanding during the period

39,217,122

37,761,316

39,038,904

37,715,723

Add nonvested restricted stock subject only to service vesting

302,799

521,667

302,438

494,744

Add additional shares issuable upon exercise of stock options and warrants

309,742

1,147,733

511,956

1,005,165

Weighted average number of common shares used in calculating diluted net income per share

39,829,663

39,430,716

39,853,298

39,215,632

Diluted net income per share attributable to RadNet, Inc.'s common stockholders

$

0.07

$

0.07

$

0.03

$

0.07