Overview
Calibration phantoms provide reference signals for system calibration and quantitative accuracy. They are used for CT attenuation MRI signal scaling and PET quantification. Accurate calibration underpins reliable diagnostic and quantitative imaging.
Material Properties
Phantom materials mimic tissue attenuation or relaxation properties for realistic calibration. Temperature and handling can affect phantom stability and must be controlled. Manufacturer specifications guide use and storage.
Calibration Protocols
Protocols define acquisition parameters and analysis steps for calibration. Regular calibration ensures consistency across scanners and time. Cross calibration supports multicenter studies and quantitative comparisons.
Maintenance and Replacement
Phantoms require periodic verification and replacement as materials age. Documentation of calibration history supports quality programs and regulatory compliance. Proper storage preserves phantom integrity.