Consolidated Statements of Cash Flows (Unaudited) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Jul. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss		$ (713,000)	$ (816,000)
Adjustments to reconcile net loss to net cash used by operating activities:
Depreciation expense		34,000	38,000
Amortization of other assets		10,000	11,000
Accretion of asset retirement obligation		8,000	7,000
Gain on change in estimate of asset retirement obligation	$ (73,000)		(73,000)
Share-based compensation		85,000	91,000
Changes in operating assets and liabilities:
Accounts receivable, gross		286,000	(367,000)
Inventory		(63,000)	39,000
Prepaid expenses and other current assets		18,000	97,000
Accounts payable and accrued expenses		106,000	301,000
Accrued protocol expense		56,000	(108,000)
Accrued radioactive waste disposal		6,000	9,000
Accrued payroll and related taxes		(189,000)	105,000
Accrued vacation		18,000	13,000
Net cash used by operating activities		(338,000)	(653,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property and equipment		(113,000)	(98,000)
Net cash used by investing activities		(113,000)	(98,000)
Net decrease in cash, cash equivalents, and restricted cash		(451,000)	(751,000)
Cash, cash equivalents, and restricted cash beginning of quarter	$ 5,507,000	2,573,000	5,507,000	$ 5,507,000
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH END OF QUARTER		2,122,000	4,756,000	2,573,000
Reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheets:
Cash and cash equivalents		1,940,000	4,575,000	2,392,000
Restricted cash		182,000	181,000	$ 181,000
Total cash, cash equivalents, and restricted cash shown on the consolidated statements of cashflows		2,122,000	4,756,000
Non-cash investing and financing activities:
Recognition of operating lease liability and right of use asset			$ 1,228,000