What Is This Tool?
This converter allows you to translate radiation absorbed dose values measured in centigray (cGy) into millirad (mrd), a legacy unit. It helps bridge modern radiation dose measurements with older or rad-based systems used in various medical and environmental applications.
How to Use This Tool?
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Enter the value in centigray (cGy) you want to convert
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Select centigray as the source unit and millirad as the target unit
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Click the convert button to see the equivalent dose in millirad (mrd)
Key Features
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Converts centigray (cGy) to millirad (mrd) accurately based on defined unit relationships
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Web-based and easy to use with quick results
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Supports common radiation absorbed dose units used in medical physics and environmental monitoring
Examples
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5 cGy converts to 5000 mrd by multiplying 5 × 1000
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0.2 cGy converts to 200 mrd by multiplying 0.2 × 1000
Common Use Cases
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Comparing modern radiotherapy doses with historical rad-based data
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Environmental and occupational radiation exposure monitoring using legacy units
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Calibrating and checking dosimeter readings that employ rad or millirad units
Tips & Best Practices
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Ensure you understand that millirad is a legacy unit less common in current clinical practice
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Use this converter to translate doses for comparison and compatibility with older equipment
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Remember the conversion may not reflect measurement uncertainties or calibration differences
Limitations
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Millirad is an older unit and not widely used in modern clinical settings
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Conversions assume exact unit relationships and do not include measurement error factors
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Small doses expressed in millirad might require very precise instruments to measure accurately
Frequently Asked Questions
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What is the relationship between centigray and millirad?
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1 centigray equals 1000 millirad, reflecting the conversion from a modern to a legacy radiation dose unit.
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Why convert centigray to millirad?
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Converting allows comparison of modern absorbed dose measurements with historical data or use on equipment calibrated with rad-based units.
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Is millirad commonly used in clinical practice today?
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Millirad is a legacy unit and is less commonly used in current clinical radiation therapy practices.
Key Terminology
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Centigray (cGy)
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A unit of absorbed ionizing radiation dose equal to one hundredth of a gray, used to quantify energy deposited by radiation per unit mass.
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Millirad (mrd)
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One thousandth of a rad, a legacy CGS unit of absorbed radiation dose equating to one ten-thousandth of a gray.
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Absorbed Dose
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The amount of radiation energy deposited in a material or tissue per unit mass.