Consolidated Balance Sheets (USD $)	Sep. 30, 2011	Jun. 30, 2011
Current assets:
Cash and cash equivalents	$ 1,594,545	$ 2,112,254
Accounts receivable, net of allowance for doubtful accounts of $110,031 and $63,867, respectively	972,429	792,835
Inventory	761,906	749,849
Other receivables	19,364	425,901
Prepaid expenses and other current assets	211,857	141,154
Total current assets	3,560,101	4,221,993
Fixed assets, net of accumulated depreciation and amortization	2,998,900	3,208,911
Restricted cash	180,880	180,809
Other assets, net of accumulated amortization	279,469	277,182
Total assets	7,019,350	7,888,895
Current liabilities:
Accounts payable and accrued liabilities	548,804	372,259
Accrued protocol expense	101,537	98,159
Accrued radioactive waste disposal	116,367	108,060
Accrued payroll and related taxes	72,668	125,014
Accrued vacation	79,057	70,706
Total current liabilities	918,433	774,198
Asset retirement obligation	677,192	662,181
Total liabilities	1,595,625	1,436,379
Contingencies (Note 6)
Shareholders' equity:
Common stock, $.001 par value; 193,000,000 shares authorized; 26,493,118 and 26,443,118 shares issued and outstanding	26,493	26,443
Treasury stock, at cost, 13,200 and 13,200 shares	(8,390)	(8,390)
Additional paid-in capital	51,253,620	51,180,237
Accumulated deficit	(45,848,057)	(44,745,833)
Total shareholders' equity	5,423,725	6,452,516
Total liabilities and shareholders' equity	7,019,350	7,888,895
Series A
Shareholders' equity:
Preferred stock
Series B
Shareholders' equity:
Preferred stock	59	59
Series C
Shareholders' equity:
Preferred stock