Note 10 - Commitments and Contingencies	12 Months Ended
Dec. 31, 2023
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 10 – COMMITMENTS AND CONTINGENCIES On December 20, 2018, the Company signed Second Amendments to two System Build Agreements for the Company’s second and third Mevion PBRT units. These commitments expired in January 2024 and the Company was not able to utilize this equipment. During the year-ended December 31, 2020, the Company impaired these deposits and wrote-off the deposits and related capitalized interest. As of December 31, 2023, the Company had commitments to install three Leksell Gamma Knife Esprit Systems (“Esprit”), install one Cobalt-60 reload with software, purchase one Gamma Plan workstation, purchase one Linear Accelerator (“LINAC”) system, and purchase one Magnetic Resonance imaging guided LINAC (“MR LINAC”). The LINAC, MR LINAC and one Esprit will be placed at future customer sites. The remaining Esprit upgrades and Cobalt-60 reload are scheduled to occur during 2024 at existing customer sites. The Company also has one commitment to de-install a Gamma Knife unit at an existing customer site. The Company’s LINAC installation in Puebla was in process at December 31, 2023 and the Company made substantial payments towards the project during 2023. In January 2024, the Company amended the Credit Agreement to include financing for this project. At December 31, 2023, the Company had commitments remaining for some of the ancillary equipment in Puebla. Total Gamma Knife and LINAC commitments as of December 31, 2023, were $15,925,000. There are no deposits on the consolidated balance sheets related to these commitments as of December 31, 2023. It is the Company's intent to finance substantially all of these commitments. There can be no assurance that financing will be available for the Company’s current or future projects, or at terms that are acceptable to the Company. However, the Company currently has cash on hand of $13,808,000 and a line of credit of $7,000,000 to fund these projects, if necessary. The Company borrowed $2,500,000 on the Revolving Line as of December 31, 2023, which was paid off in January 2024. On September 4, 2022, the Company entered into a Maintenance and Support Agreement with Mevion (the “Mevion Service Agreement”), which provides for maintenance and support of the Company’s PBRT unit at Orlando Health from September 2022 through April 2026. The agreement requires an annual prepayment of $1,865,000 for the current contractual period (one year). This payment portion was recorded as a prepaid contract and will be amortized over the one-year service period. As of December 31, 2023, the Company had commitments to service and maintain its Gamma Knife and PBRT equipment. The service commitments are carried out via contracts with Mevion, Elekta and Mobius Imaging, LLC. The Company’s commitments to purchase two LINAC systems also include a 9-year and 5-year agreement to service the equipment, respectively. Total service commitments as of December 31, 2023 were $14,805,000. The Gamma Knife and certain other service contracts are paid monthly, as service is performed. The Company believes that cash flow from cash on hand and operations will be sufficient to cover these payments. The Company’s customer contracts generally contain mutual indemnification provisions. The Company maintains general and professional liability insurance in the United States. The Company is not involved in the practice of medicine and therefore believes its present insurance coverage and indemnification agreements are adequate for its business. The Company’s Peruvian and Ecuadorian Gamma Knife centers are free-standing facilities operated by GKPeru and GKCE, respectively. The treating physicians and clinical staff at these facilities are independent contractors. The Company maintains general and professional liability insurance consistent with the operations of these facilities and believes its present coverage is adequate for its business.

Note 10 - Commitments and Contingencies

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Text Block]

NOTE 10 – COMMITMENTS AND CONTINGENCIES

On December 20, 2018, the Company signed Second Amendments to two System Build Agreements for the Company’s second and third Mevion PBRT units. These commitments expired in January 2024 and the Company was not able to utilize this equipment. During the year-ended December 31, 2020, the Company impaired these deposits and wrote-off the deposits and related capitalized interest.

As of December 31, 2023, the Company had commitments to install three Leksell Gamma Knife Esprit Systems (“Esprit”), install one Cobalt-60 reload with software, purchase one Gamma Plan workstation, purchase one Linear Accelerator (“LINAC”) system, and purchase one Magnetic Resonance imaging guided LINAC (“MR LINAC”). The LINAC, MR LINAC and one Esprit will be placed at future customer sites. The remaining Esprit upgrades and Cobalt-60 reload are scheduled to occur during 2024 at existing customer sites. The Company also has one commitment to de-install a Gamma Knife unit at an existing customer site. The Company’s LINAC installation in Puebla was in process at December 31, 2023 and the Company made substantial payments towards the project during 2023. In January 2024, the Company amended the Credit Agreement to include financing for this project. At December 31, 2023, the Company had commitments remaining for some of the ancillary equipment in Puebla. Total Gamma Knife and LINAC commitments as of December 31, 2023, were $15,925,000. There are no deposits on the consolidated balance sheets related to these commitments as of December 31, 2023. It is the Company's intent to finance substantially all of these commitments. There can be no assurance that financing will be available for the Company’s current or future projects, or at terms that are acceptable to the Company. However, the Company currently has cash on hand of $13,808,000 and a line of credit of $7,000,000 to fund these projects, if necessary. The Company borrowed $2,500,000 on the Revolving Line as of December 31, 2023, which was paid off in January 2024.

On September 4, 2022, the Company entered into a Maintenance and Support Agreement with Mevion (the “Mevion Service Agreement”), which provides for maintenance and support of the Company’s PBRT unit at Orlando Health from September 2022 through April 2026. The agreement requires an annual prepayment of $1,865,000 for the current contractual period (one year). This payment portion was recorded as a prepaid contract and will be amortized over the one-year service period.

As of December 31, 2023, the Company had commitments to service and maintain its Gamma Knife and PBRT equipment. The service commitments are carried out via contracts with Mevion, Elekta and Mobius Imaging, LLC. The Company’s commitments to purchase two LINAC systems also include a 9-year and 5-year agreement to service the equipment, respectively. Total service commitments as of December 31, 2023 were $14,805,000. The Gamma Knife and certain other service contracts are paid monthly, as service is performed. The Company believes that cash flow from cash on hand and operations will be sufficient to cover these payments.

The Company’s customer contracts generally contain mutual indemnification provisions. The Company maintains general and professional liability insurance in the United States. The Company is not involved in the practice of medicine and therefore believes its present insurance coverage and indemnification agreements are adequate for its business. The Company’s Peruvian and Ecuadorian Gamma Knife centers are free-standing facilities operated by GKPeru and GKCE, respectively. The treating physicians and clinical staff at these facilities are independent contractors. The Company maintains general and professional liability insurance consistent with the operations of these facilities and believes its present coverage is adequate for its business.