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Understanding CAN/CSA C22.2 No. 60601-2-68-15: Safety and Performance Requirements for Diagnostic X-Ray Equipment
A comprehensive guide to the Canadian adoption of IEC 60601-2-68 for radiography and radioscopy systems
Scope and Applicability
CAN/CSA C22.2 No. 60601-2-68-15 is the Canadian national adoption of the international standard IEC 60601-2-68:2014, which specifies particular requirements for the basic safety and essential performance of X-ray equipment used for radiography and radioscopy (including fluoroscopy). This standard applies to medical electrical equipment and systems that generate X-rays for diagnostic imaging, excluding radiotherapy devices, computed tomography (CT) scanners, and dental extraoral X-ray equipment.
The standard is intended for manufacturers, testing laboratories, and healthcare facilities that design, install, or operate stationary and mobile X-ray systems used in general radiography, fluoroscopy, interventional imaging, and related procedures. Its scope covers both the X-ray source assembly (e.g., X-ray tube, collimator) and the complete system including image receptors, patient supports, and control devices.
Important note: CAN/CSA C22.2 No. 60601-2-68-15 is a standalone document within the CSA C22.2 series and must be used in conjunction with the general standard CAN/CSA C22.2 No. 60601-1 (IEC 60601-1) for medical electrical equipment safety. Compliance with both is required for certification in Canada.
Relationship to Other Standards
This standard replaces earlier requirements found in CSA C22.2 No. 114 (for diagnostic X-ray equipment) and aligns with the latest international consensus on radiation safety, dose management, and performance testing. It harmonizes with other relevant collateral standards such as IEC 60601-1-2 (EMC), IEC 60601-1-6 (usability), and IEC 60601-1-8 (alarm systems).
Key Technical Requirements
The standard establishes performance criteria and test methods for a wide range of parameters that directly affect patient and operator safety. The following table summarizes the most critical technical requirements:
| Requirement Category | Specific Parameter | Acceptance Criterion (example) |
|---|---|---|
| Radiation output | Air kerma rate | ± 20% of indicated value |
| Beam quality | Half-value layer (HVL) | ≥ 2.3 mm Al at 70 kVp |
| Collimation | Light field/X‑field alignment | ≤ 2% of SID |
| Patient dose | Dose area product (DAP) accuracy | ± 25% of reference |
| Image quality | Limiting spatial resolution | ≥ 2.5 lp/mm (flat panel) |
| Electrical safety | Leakage current (patient applied parts) | ≤ 10 µA under normal conditions |
| Radiation protection | X-ray tube housing leakage | < 1 mGy/h at 1 m |
In addition, the standard mandates robust dose reporting and management features. Equipment must provide real‑time display of air kerma (AK) and dose area product (DAP) for every exposure, including cumulative dose monitoring during fluoroscopic procedures. This supports the principle of As Low As Reasonably Achievable (ALARA) and facilitates compliance with provincial regulations on fluoroscopy dose tracking.
Design tip: For new product development, integrating a DAP meter that meets the ±25% accuracy requirement across the full dynamic range (0.01 µGy·m² to 1000 µGy·m²) simplifies type testing and reduces the need for correction factors later in the certification process.
Essential Performance
Beyond safety, the standard defines essential performance criteria that directly relate to the clinical effectiveness of the device. These include:
- Consistency of radiation output – ensuring reproducible exposures for repeated techniques.
- Accuracy of X‑ray parameters – tube voltage (kVp), tube current (mA), exposure time (ms).
- Automatic exposure control (AEC) – for correct optical density in radiography and adequate image brightness in fluoroscopy.
- Timer termination reliability – essential for patient safety during long fluoroscopy runs.
Implementation Considerations for Healthcare Facilities
When installing or upgrading radiographic and fluoroscopic (R&F) systems in Canada, healthcare providers must ensure that the equipment is certified to CAN/CSA C22.2 No. 60601-2-68-15. Key implementation steps include:
- Procurement specification – Include a clause requiring third‑party certification (e.g., CSA, Intertek, UL) to the standard.
- Site acceptance testing – Verify that the installed system meets performance parameters like beam alignment, radiation output, and leakage within the limits of the standard.
- Radiation safety compliance – Integrate the system into the facility’s radiation protection program per Health Canada’s Safety Code series.
- Training and labeling – Ensure that all controls, indicators, and alarms conform to the usability requirements of the standard to prevent user error.
Best practice: Conduct a gap analysis between your current X‑ray equipment’s documentation and the requirements of CAN/CSA C22.2 No. 60601-2-68-15. Pay special attention to radiation dose reporting features and labeling of collimation controls, which are frequent points of non‑compliance.
Certification and Compliance Notes
Manufacturers seeking to market diagnostic X‑ray equipment in Canada must demonstrate compliance with CAN/CSA C22.2 No. 60601-2-68-15. The certification process generally involves:
Type Testing
A recognized certification body (CB) performs full type tests on a representative sample of the equipment. Tests cover electrical safety, radiation safety, mechanical hazards, and essential performance as per the standard. The CB will verify compliance with both the collateral standards (e.g., CAN/CSA C22.2 No. 60601‑1) and the particular standard.
Manufacturing Quality System
ISO 13485 certification is typically required to maintain consistency of the certified design. The CB may conduct periodic factory inspections to ensure ongoing conformity.
Marking and Instructions for Use
Equipment must be permanently marked with the certification mark and with specific warnings required by the standard. The accompanying documents must include all technical data (e.g., radiation output characteristics, filtration information, and dose values) as specified in Clause 7.
Critical compliance note: CAN/CSA C22.2 No. 60601-2-68-15 includes requirements for software validation and risk management per ISO 14971. Manufacturers must document a risk management file that covers all hazards identified during the design process. Failure to provide adequate risk analysis is a common reason for certification delays.
Additionally, the standard has been harmonized with Canadian provincial radiation protection regulations. In most provinces, a valid certification to this standard is a prerequisite for registering the X‑ray unit with the regulatory authority (e.g., Ontario’s Healing Arts Radiation Protection Act, British Columbia’s X‑Ray Regulations).
Transition and Updates
As of 2026, the current edition remains CAN/CSA C22.2 No. 60601-2-68-15. However, manufacturers should monitor the release of the next edition (likely referencing IEC 60601‑2‑68:2023) to plan for recertification cycles. The CSA Group typically allows a transition period of 2‑3 years after publication of a new edition.
Q: What types of X‑ray equipment are covered by CAN/CSA C22.2 No. 60601-2-68-15?
A: The standard applies to medical electrical equipment for radiography and radioscopy (fluoroscopy), including conventional R/F systems, mobile C‑arms, and interventional radiology systems. It does not cover CT, radiotherapy, mammography, or dental extraoral equipment, which have separate particular standards.
A: The standard applies to medical electrical equipment for radiography and radioscopy (fluoroscopy), including conventional R/F systems, mobile C‑arms, and interventional radiology systems. It does not cover CT, radiotherapy, mammography, or dental extraoral equipment, which have separate particular standards.
Q: How does this standard differ from the international IEC 60601-2-68?
A: CAN/CSA C22.2 No. 60601-2-68-15 is technically equivalent to IEC 60601-2-68:2014 but includes Canadian deviations related to electrical supply voltage (120 V / 60 Hz), marking language (English and French), and references to Canadian electrical codes (CSA C22.1). Manufacturers may use the IEC version for design but must address these national differences for certification in Canada.
A: CAN/CSA C22.2 No. 60601-2-68-15 is technically equivalent to IEC 60601-2-68:2014 but includes Canadian deviations related to electrical supply voltage (120 V / 60 Hz), marking language (English and French), and references to Canadian electrical codes (CSA C22.1). Manufacturers may use the IEC version for design but must address these national differences for certification in Canada.
Q: What is the typical timeframe for obtaining CSA certification for a new X‑ray system?
A: For a moderately complex system, the process from application to certification usually takes 6‑9 months, assuming the design already meets the requirements. This includes document review, type testing (which can be expedited if an IECEE CB Test Certificate is available), and factory inspection. Engaging a CB early in the development phase can significantly shorten the timeline.
A: For a moderately complex system, the process from application to certification usually takes 6‑9 months, assuming the design already meets the requirements. This includes document review, type testing (which can be expedited if an IECEE CB Test Certificate is available), and factory inspection. Engaging a CB early in the development phase can significantly shorten the timeline.
Q: Are there special requirements for software‑controlled X‑ray systems?
A: Yes. The standard requires software lifecycle documentation following IEC 62304. Critical software functions (e.g., exposure timing, dose calculation) must be classified according to safety class and subjected to verification and validation. A software safety assurance case is often required for systems that rely on software for essential performance or safety functions.
A: Yes. The standard requires software lifecycle documentation following IEC 62304. Critical software functions (e.g., exposure timing, dose calculation) must be classified according to safety class and subjected to verification and validation. A software safety assurance case is often required for systems that rely on software for essential performance or safety functions.
This article provides an overview of CAN/CSA C22.2 No. 60601-2-68-15 and is intended for informational purposes. For detailed compliance guidance, consult the full standard text and engage a qualified certification body.
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