CONDENSED BALANCE SHEETS (USD $)	Mar. 31, 2013	Dec. 31, 2012
ASSETS
Cash	$ 1,253,812	$ 609,690
Accounts receivable, net of allowance for doubtful accounts of $663,511 at March 31, 2013 and December 31, 2012	2,203,006	2,946,468
Inventory	343,613	194,652
Prepaid expenses	190,216	125,849
Other current assets	6,395	7,175
Income taxes receivable	82,656	82,656
TOTAL CURRENT ASSETS	4,079,698	3,966,490
LONG-TERM ASSETS
Patent, net	5,391	5,732
Property and equipment, net	22,254	27,744
System under rental program, net	27,268	34,771
Other long term assets	316,340	358,980
Deferred tax asset	19,000	20,000
Long-term accounts receivable - financed contracts	384,288	732,376
TOTAL LONG-TERM ASSETS	774,541	1,179,603
TOTAL ASSETS	4,854,239	5,146,093
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	242,000	359,018
Payroll liabilities	44,209	31,115
Current portion of note payable	10,907	10,907
Deferred revenue - short term	19,059	22,409
Deferred tax liability	642,947	638,947
TOTAL CURRENT LIABILITIES	959,122	1,062,396
LONG-TERM LIABILITIES
Note payable, net of current portion	5,453	8,180
Deferred revenue - long term	1,272,196	1,457,793
TOTAL LIABILITIES	2,236,771	2,528,369
STOCKHOLDERS' EQUITY
Common stock, 0.001 par value; 25,000,000 shares authorized: 4,759,805 shares issued and outstanding at March 31, 2013 and December 31, 2012	4,760	4,760
Additional paid-in capital	1,874,857	1,874,857
Retained earnings	739,273	739,529
Stockholders' Equity before Treasury Stock	2,618,890	2,619,146
Treasury stock, 1,000 shares (at cost) at March 31, 2013 and December 31, 2012	(1,422)	(1,422)
TOTAL STOCKHOLDERS' EQUITY	2,617,468	2,617,724
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 4,854,239	$ 5,146,093