Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (1,102,224)	$ (871,882)
Adjustments to reconcile net loss to net cash used by operating activities:
Depreciation and amortization of fixed assets	216,806	224,528
Amortization of deferred financing costs and other assets	6,714	7,262
Accretion of asset retirement obligation	15,011	13,724
Share-based compensation	33,189	24,592
Changes in operating assets and liabilities:
Accounts receivable, net	(179,594)	62,923
Inventory	(12,057)	3,089
Other receivables	406,537	(4,227)
Prepaid expenses, other current assets and other assets	(70,703)	(45,405)
Accounts payable and accrued expenses	176,545	22,560
Accrued protocol expense	3,378	(29,698)
Accrued radioactive waste disposal	8,307	12,000
Accrued payroll and related taxes	(52,346)	(61,497)
Accrued vacation	8,351	1,756
Net cash used by operating activities	(542,086)	(640,275)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of fixed assets	(6,795)	(1,892)
Additions to other assets	(9,001)
Change in restricted cash	(71)	(214)
Net cash used by investing activities	(15,867)	(2,106)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on notes payable		(11,919)
Proceeds from sales of common stock, pursuant to exercise of warrants, net	40,244
Net cash provided / (used) by financing activities	40,244	(11,919)
Net decrease in cash and cash equivalents	(517,709)	(654,300)
Cash and cash equivalents, beginning of period	2,112,254	1,678,869
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 1,594,545	$ 1,024,569