Calibration

Calibration Methodology & Protocols

Calibration is performed in terms of Absorbed Dose to Water Calibration Coefficient (N_D,W ), using:

• PTB-Germany Traceable Reference Dosimeters
• Water Phantoms
• Standard beam qualities for Radiotherapy Dosimetry
• IAEA TRS-398,469 &381 (Absorbed Dose to Water Protocol)

We Calibrate the Following:

• Farmer-Type Cylindrical Ionization Chambers
• Plane-Parallel Ionization Chambers
• All Types of Small Field Ionization Chambers
• Semiconductor Diode Detectors

Each Instrument undergoes:

• Pre-Calibration Inspection
• Leakage, Stability, Polarity, Recombination Checks
• Absorbed-Dose Calibration
• Environmental Corrections (T, P Humidity)
• Statistical & Uncertainty Analysis
• Final Traceability Verification

Quality Assurance & Environmental Control

• All Received Instruments Are Stored in A Controlled Environment
• Continuous Monitoring of Temperature, Humidity, And Ambient Conditions
• Periodic Reference Instrument Cross-Checks
• Uncertainty Budget Evaluation as Per ISO/IEC 17025:2017
• Redundancy-Based Metrological Verification
• Drift Assessment and Long-Term Stability Monitoring

Measurement Confidence & Uncertainty with a CMC of 0.75%, HBCL ensures:

• High Repeatability and Reproducibility
• Low Uncertainty in Calibration Coefficients
• International-Level Metrological Confidence
• Compliance with Global QA Requirements for Radiotherapy Centres

Providing Reliable Calibration Solutions That Enhance the Accuracy and Safety of Clinical Radiation Dosimetry.